WO2004060655A1 - ポリウレタン発泡体シート及びそれを用いた積層体シートの製造方法 - Google Patents
ポリウレタン発泡体シート及びそれを用いた積層体シートの製造方法 Download PDFInfo
- Publication number
- WO2004060655A1 WO2004060655A1 PCT/JP2003/016476 JP0316476W WO2004060655A1 WO 2004060655 A1 WO2004060655 A1 WO 2004060655A1 JP 0316476 W JP0316476 W JP 0316476W WO 2004060655 A1 WO2004060655 A1 WO 2004060655A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sheet
- liquid mixture
- urethane prepolymer
- polyurethane foam
- foam
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
- B29C44/32—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
- B29C44/321—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements the preformed part being a lining, e.g. a film or a support lining
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
- B29C44/32—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
- B29C44/326—Joining the preformed parts, e.g. to make flat or profiled sandwich laminates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/065—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/06—Interconnection of layers permitting easy separation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
- C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
- C08G18/4018—Mixtures of compounds of group C08G18/42 with compounds of group C08G18/48
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
- B29C67/24—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 characterised by the choice of material
- B29C67/246—Moulding high reactive monomers or prepolymers, e.g. by reaction injection moulding [RIM], liquid injection moulding [LIM]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B2038/0052—Other operations not otherwise provided for
- B32B2038/0084—Foaming
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2266/00—Composition of foam
- B32B2266/02—Organic
- B32B2266/0214—Materials belonging to B32B27/00
- B32B2266/0278—Polyurethane
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0008—Foam properties flexible
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0083—Foam properties prepared using water as the sole blowing agent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2170/00—Compositions for adhesives
- C08G2170/20—Compositions for hot melt adhesives
Definitions
- the present invention relates to a polyurethane foam sheet applicable to artificial leather, synthetic leather, cushioning material and the like used for various applications, and a method for producing a laminate sheet using the same.
- Polyurethane foam sheets especially polyurethane foam sheets manufactured using so-called soft polyurethane as a raw material, have excellent flexibility, elasticity, and cushioning properties. It is used for supporters and other purposes.
- low-boiling organic solvents such as black fluorocarbon (for example, CFC-11 or CFC-113) or methylene chloride have been used as a foaming agent.
- black fluorocarbon for example, CFC-11 or CFC-113
- methylene chloride methylene chloride
- the laminated sheet referred to in the present invention means a sheet having a laminated structure composed of the polyurethane foam sheet and a nonwoven fabric, a woven fabric, a knitted fabric, etc., and includes artificial leather and synthetic leather.
- This is a typical example.
- polyurethane resin has been widely used for human leather and synthetic leather.
- these artificial leathers and synthetic leathers have a foam layer (a porous layer made of a polyurethane resin) in order to add a texture to the leather. ) Is employed.
- the “artificial leather” is generally prepared by impregnating or coating a nonwoven fabric with a solution of a polyurethane resin composition in dimethylformamide (hereinafter, also referred to as DMF).
- DMF dimethylformamide
- the polyurethane resin is coagulated to form a foamed layer (porous layer), and then dried during the washing step.
- It is manufactured by a so-called wet processing method that goes through a process.
- synthetic leather is generally manufactured by the same method as the wet mouth method in the above-mentioned "artificial leather” except that a woven fabric or a knitted fabric is used instead of a nonwoven fabric.
- Synthetic leather is also manufactured by the so-called dry method, but this method is the same as the wet method in that a large amount of organic solvent is used.
- aqueous polyurethane resins in place of organic solvent-type polyurethane resins has been studied, but the water resistance and durability of the resulting polyurethane foam sheets and laminate sheets of human leather and synthetic leather have been studied. Due to its poor performance, its application range is extremely narrow.
- a prepolymer having an isocyanate group at a terminal and 2-pyrrolidone are mixed to form the mixture into a sheet, and then steam is brought into contact with the sheet mixture.
- a method of foaming and curing is disclosed (for example, Japanese Patent Application Laid-Open No. 11-246695 (page 3, left column, paragraph “0 16”) to page 4, right column, paragraph “0 0 2 5 ”).
- the prepolymer having an isocyanate group at the terminal which is specifically disclosed in the above-mentioned literature, is a liquid at ordinary temperature and becomes a solid by a cross-linking reaction with moisture (moisture).
- the sheet-like mixture of prevolimer and 2-pyrrolidone specifically disclosed in the above-mentioned literature has a low viscosity, and even after foaming by contacting steam, the viscosity is still low and the foam shape is fixed.
- the foamed polyurethane elastomer sheet obtained is difficult because the cross-linking reaction due to the reaction with moisture in the atmosphere thereafter requires time, and the viscosity of the sheet-like mixture is insufficiently increased and the cohesive force is weak.
- a stress is applied, such as when a roll is wound on a roll, the foamed foam deforms or the foam collapses.
- the laminated polyurethane sheet is manufactured by laminating the foamed polyurethane elastomer sheet with another base material, the components of the mixture permeate into the other base material, and the obtained laminated body sheet is obtained. There was also a problem that the texture became hard.
- the thickness of the foam applied to the sheet is about 50 to 200 m.
- the foam shape generated by mechanical foaming tends to be non-uniform, the foaming degree of the obtained foam becomes extremely small, and a certain time is required for the cross-linking reaction of the isocyanate group to proceed.
- a stress for example, when the obtained polyurethane porous sheet-like structure is wound with a roll or the like, the foamed foam deforms or collapses. There was such a problem. Disclosure of the invention
- the problem to be solved by the present invention is to reduce the energy consumption required for evaporating and removing the solvent without using an organic solvent drying or extraction step without using an organic solvent that is harmful to humans and the environment. Even if the foam sheet is relatively thin, it is easy to control the foam shape, has a uniform foam shape, has a soft texture, and has flexibility.
- Another object of the present invention is to provide a polyurethane foam sheet excellent in mechanical strength and durability such as hydrolysis resistance and heat resistance, and a production method capable of obtaining a laminate sheet containing the polyurethane foam sheet. is there.
- the present inventors need to have a suitable fluidity when processing a raw material such as polyurethane into a sheet in order to obtain a target polyurethane foam sheet.
- a suitable fluidity when processing a raw material such as polyurethane into a sheet in order to obtain a target polyurethane foam sheet.
- the present inventors have focused on the point that the raw material must have an appropriate viscosity at the time of foaming the raw material. From this point of view, it was determined that a solvent-free hot-melt urethane prepolymer having an isocyanate group at the molecular end was suitable and studied.
- This hot melt urethane prepolymer is solid at room temperature, but melts when heated and becomes liquid, and has the property of exhibiting cohesive force again when cooled, so it is processed into a sheet by heating and melting. Above, appropriate fluidity can be provided.
- the hot-melt urethane pre-polymer After being processed into a sheet, the hot-melt urethane pre-polymer, which has been in a heated and molten state, decreases in temperature according to the ambient temperature in the manufacturing process, and the viscosity increases with the temperature decrease. Furthermore, a crosslinking reaction proceeds between the isocyanate groups of the hot melt urethane prepolymer and the moisture (water) in the atmosphere, and the viscosity suitable for foaming is increased. Degree.
- foaming is preferably performed after the hot melt urethane prepolymer is processed into a sheet shape, especially in the case of a relatively thin foam sheet of about 50 to 200 ⁇ m. It has been found that the control of the foam shape is easy and a polyurethane foam sheet having a uniform foam shape can be obtained.
- a method in which a hot melt urethane prepolymer is mechanically foamed in advance and then processed into a sheet Japanese Patent Application Laid-Open No. 2002-249534.
- a foam sheet having a small thickness there is a problem that it is difficult to make the foam shape uniform and increase the degree of foaming.However, by foaming after processing into a sheet shape, The problem was solved successfully.
- water foaming is a well-known technique known to those skilled in the art, which comprises contacting water vapor with, for example, a urethane prepolymer having an isocyanate group at the molecular end : 'reacting the isocyanate group with water Means a method of foaming by generating carbon dioxide gas.
- the liquid hot-melt urethane prepolymer can be favorably foamed, and the crosslinking reaction of the hot-melt urethane prepolymer progresses due to the reaction between the isocyanate group and water, and the foaming occurs.
- the cohesive strength and physical strength of the urethane pre-polymer can be rapidly increased. As a result, they have found that the generated foam can be immobilized as early as possible, that is, a state in which the shape of the generated foam hardly changes.
- the viscosity in the water foaming step is adjusted, and the foamed urethane is used. It has been found that it is effective in speeding up the improvement of cohesive force and physical strength by a crosslinking reaction with prepolymer and the improvement of physical strength and durability of the obtained polyurethane foam sheet. As a result, it was possible to further improve the early fixing and uniformization of the foam shape.
- the obtained polyurethane foam sheet and the laminate sheet using the polyurethane foam sheet are obtained.
- the present invention was completed by finding that the foamed foam could be deformed or crushed even when stress was applied, such as when it was wound up with a roll, etc. Led to
- the present invention was obtained by mixing a hot-melt urethane prepolymer (A) having an isocyanate group at the molecular end which was melted by heating, and a compound (B) having at least two active hydrogen atom-containing groups.
- a method for producing a polyurethane foam sheet comprising applying a liquid mixture in a sheet shape on a base material, and contacting the obtained sheet-shaped liquid mixture with water vapor to foam the liquid mixture. Things.
- the present invention provides a method wherein the liquid mixture is mixed between a first release substrate and a second release substrate. To form a sheet-like material continuously, and contacting steam on one or both surfaces of the release substrate to the first release substrate and the second release substrate.
- Another object of the present invention is to provide a method for producing a polyurethane foam sheet, wherein the sandwiched sheet is foamed with water.
- the present invention also provides a method for producing a laminate sheet having the polyurethane foam sheet, wherein the liquid mixture is applied in a sheet shape on a base material, and steam is brought into contact with the obtained sheet-shaped liquid mixture.
- the foam obtained by foaming the liquid mixture with water It is an object of the present invention to provide a method for producing a laminate sheet, comprising bonding a third base material to a urethane foam sheet.
- the liquid mixture is introduced between a first release substrate and a second release substrate to form a sheet continuously, and the first release property is provided.
- the substrate or the second release substrate is peeled off, and the first or second release substrate remaining without being peeled off from the release surface of the sheet-like material and / or
- a third substrate is attached to a surface of the polyurethane foam sheet obtained by subjecting the sheet material to water foaming by exposing the first or second release substrate to water.
- Another object of the present invention is to provide a method for producing a laminate sheet.
- FIG. 1 is a schematic sectional view of a sheet structure having a polyurethane foam sheet according to one embodiment of the present invention.
- FIG. 2 is a schematic sectional view of a polyurethane foam sheet according to one embodiment of the present invention.
- FIG. 3 is a schematic sectional view of a sheet structure having a laminate sheet using the polyurethane foam sheet according to one embodiment of the present invention.
- FIG. 4 is a schematic sectional view of a laminate sheet using the polyurethane foam sheet according to one embodiment of the present invention.
- FIG. 5 is a schematic cross-sectional view of a sheet structure having a laminate sheet using the polyurethane foam sheet according to one embodiment of the present invention.
- FIG. 6 is a schematic sectional view of a laminated sheet using the polyurethane foam sheet according to one embodiment of the present invention.
- FIG. 7 is a schematic cross-sectional view of a sheet structure having a laminate sheet using a polyurethane foam sheet according to one embodiment of the present invention.
- FIG. 8 is a schematic sectional view of a laminated sheet using the polyurethane foam sheet according to one embodiment of the present invention.
- FIG. 9 is a schematic view showing a method for producing a polyurethane foam and a sheet structure having the same according to one embodiment of the present invention.
- FIG. 10 is a schematic diagram showing a polyurethane foam according to one embodiment of the present invention and a method for producing a sheet structure having a laminate sheet using the same.
- FIG. 11 is a schematic view showing a polyurethane foam according to one embodiment of the present invention and a method for producing a sheet structure having a laminate sheet using the same.
- FIG. 12 is a schematic diagram showing a method for producing a polyurethane foam and a sheet structure having the same according to one embodiment of the present invention.
- FIG. 13 is a schematic view showing a polyurethane foam according to one embodiment of the present invention and a method for producing a sheet structure having a laminate sheet using the same.
- FIG. 14 is a schematic diagram showing a polyurethane foam according to one embodiment of the present invention and a method for producing a sheet structure having a laminate sheet using the same.
- FIG. 15 is a schematic view showing a polyurethane foam according to one embodiment of the present invention and a method for producing a sheet structure having a laminate sheet using the same.
- Most of the foam in the polyurethane foam sheet referred to in the present invention is a closed cell (independent foam), but also includes a foam in which a part of the foam is mixed.
- the size of the bubbles can be controlled as appropriate, but the diameter is preferably about 5.0 to 200 ⁇ .
- the thickness of the foam sheet of the present invention is not particularly limited. However, when used for synthetic leather or artificial leather, the texture of the resin-impregnated nonwoven fabric, resin-impregnated nonwoven fabric, woven fabric, and knitted fabric to be laminated is also considered. Depending on the texture and mechanical strength, it is preferably about 0.05 to 0.5 mm.
- the degree of foaming of the polyurethane foam sheet can be appropriately adjusted within a range that does not impair the feel or strength according to the use.
- the foaming degree is preferably in the range of 1.5 to 3.0.
- the technical term of “foaming degree” means the ratio of the volume (V,) of the resin before foaming to the volume (V 2 ) of the resin after foaming, that is, V 2 / V 1. .
- the method for producing a polyurethane foam sheet according to the present invention comprises: a hot-melt urethane prepolymer (A) having an isocyanate group at a molecular end heated and melted; A liquid mixture obtained by mixing a compound (B) having at least two element-containing groups with a compound (B) is coated on a substrate in a sheet form, and the obtained sheet-shaped liquid mixture is brought into contact with water vapor. Wherein the liquid mixture is foamed with water.
- urethane-forming catalyst (C) and a foam stabilizer (D) are added to the hot melt urethane prepolymer (D).
- A) and a compound having at least two active hydrogen atom-containing groups are added to the hot melt urethane prepolymer (D).
- the method of adding to the liquid mixture with (B) is effective.
- the shape of the foam can also be effectively controlled by changing the conditions (atmospheric temperature, atmospheric humidity, contact time, etc., of the surface of the liquid mixture) for bringing the liquid mixture into contact with water vapor.
- the foam shape can be easily controlled and uniform foam can be obtained.
- a polyurethane foam sheet that has a shape, a soft texture, flexibility, and excellent mechanical strength and durability such as hydrolysis resistance and heat resistance can be obtained.
- the present invention uses a combination of a hot melt urethane prepolymer having an isocyanate group at the molecular terminal (A) and a compound having at least two active hydrogen atom-containing groups (B). Are listed.
- the liquid mixture has an appropriate viscosity at the stage of contacting water vapor with the liquid mixture and causing water foaming. It has been found that it is difficult to control the foam shape of a urethane prepolymer that is liquid at room temperature as conventionally known.
- the foam shape is controlled for the first time by using a combination of hot menoleto urethane prepolymer (A) and a compound (B) having at least two active hydrogen atom-containing groups as urethane prepolymers. This facilitates uniformization of the foam shape with high precision.
- the hot melt urethane prepolymer (A) is brought into an appropriate fluid state by being heated and melted, and the liquid mixture with the compound (B) is heated to an appropriate temperature to form a sheet on a release substrate or the like. It can be applied in a shape.
- the liquid mixture of the hot melt urethane prepolymer (A) and the compound (B) After being applied in the form of a sheet, the temperature of the liquid mixture decreases in accordance with the ambient temperature, but the viscosity of the liquid mixture increases as the temperature decreases. Further, a crosslinking reaction proceeds between the isocyanate group of the hot melt urethane prepolymer (A), the active hydrogen atom-containing group of the compound (B), and the moisture (water) in the atmosphere, and water is added to the liquid mixture.
- the liquid mixture has an appropriate viscosity at the stage of bringing the water into contact with steam and causing water foaming, the water foaming proceeds satisfactorily.
- the isocyanate group of the hot melt urethane prepolymer (A) undergoes a cross-linking reaction with water vapor or moisture (water).
- the cross-linking reaction causes the liquid mixture in the foaming process.
- the viscosity of the foam further increases, solidifies and generates an appropriate cohesive force, so that the foam generated at the time of foaming is fixed as early as possible, that is, the shape of the generated foam can be hardly changed.
- the active hydrogen atom-containing group of the remaining compound (B) has Reaction progresses with moisture and moisture (water) in the atmosphere to obtain a polyurethane foam sheet having the desired foam shape, mechanical strength, hydrolysis resistance and heat resistance in a short time.
- the foam of the polyurethane foam sheet obtained in this manner is not easily deformed by stress such as a winding pressure applied when the sheet is wound by a roll or the like, and the foam shape is favorably maintained. Can be.
- the polyurethane foam sheet can be continuously and efficiently produced.
- the hot melt urethane prepolymer (A) when the hot melt urethane prepolymer (A) is heated and melted, it is preferable to heat it in a temperature range of 60 to 250 ° C.
- the compound (B) having at least two active hydrogen atom-containing groups is heated in a temperature range from room temperature (23 ° C.) to 250 ° C. It is preferable to mix with urethane prebolimer (A) at high speed.
- the urethanization catalyst (C) and the foam stabilizer (D) are also used, the urethanization catalyst (C) and the foam stabilizer (D) are also used at room temperature (23 ° C) to 25 It is preferable to carry out the temperature control in a temperature range of 0 ° C.
- the equipment for mixing the hot melt urethane prepolymer (A) and the compound (B) is not particularly limited as long as the equipment can uniformly mix the hot melt urethane prepolymer (A). ) And the compound (B) are applied to various base materials to produce a foam sheet / laminate sheet, and the fluidity of the liquid mixture becomes insufficient, resulting in poor coating and poor adhesion.
- a high-speed mixing head having a structure capable of heating and maintaining the liquid mixture is desirable.
- the set temperature of the high-speed mixing head is preferably maintained within the range of the melting temperature of the hot melt urethane prepolymer (A) to the melting temperature + 30 ° C. Within this range, mixing and stirring are advantageous, workability is excellent, and a foam sheet having a uniform foam shape is obtained when water and foam are forced into contact with water vapor or moisture (TR).
- a coater, a spray coater, a T-die coater, a knife coater, or the like apply the mixture on a substrate in sheet form, and contact the obtained liquid mixture in sheet form with water vapor or moisture (water) to form the liquid mixture.
- a polyurethane foam sheet is obtained.
- the liquid mixture is mixed with a first release substrate set in a range of 10 to 120 ° C. using a mouth coater. After uniformly applying a sheet between the second release base materials, from either or one of the release base materials, or any of the first or second release base materials It is preferable to produce a polyurethane foam sheet by directly spraying high-temperature steam on the liquid mixture applied in the form of a sheet by peeling off one of them and performing humidification treatment to cause water foaming.
- water foaming means that water is used as a blowing agent, and the isocyanate group of the hot melt urethane prepolymer (A) used in the present invention reacts with the water to generate carbon dioxide gas. It means foaming by generation.
- water bubbles can be effectively foamed by bringing steam or moisture (water) into contact with the liquid mixture.
- the conditions for contacting water vapor or moisture (water) are not particularly limited as long as the cross-linking reactivity of the isocyanate groups of the hot melt urethane prepolymer (A) is not impaired.
- the temperature of the surface of the liquid mixture of the hot melt urethane prepolymer (A) and the compound (B) is preferably set at 40 to 120 ° C, more preferably at 60 to 80 ° C, It is preferable to set the atmosphere humidity to 60% or more and the humidification time to 0.5 seconds to 10 minutes.
- a method of bringing into contact with steam or moisture there is a method using a humidifying chamber, a steam spraying device, or the like which can keep the conditions of the ambient temperature, the atmospheric humidity and the humidifying time on the surface of the liquid mixture constant. It is more preferable to use a device that generates saturated steam, since the steam is hardly cooled to form water droplets during circulation in the production line. In order to further improve the thickness accuracy, it is preferable to use a pressing belt press, a nip roll, a flat press, or the like after the humidification treatment.
- a laminate sheet having the polyurethane foam sheet can be manufactured.
- the timing of foaming with water that is, the timing of contact with water vapor or moisture (water) may be before or after bonding the third substrate.
- the method for producing a laminate sheet of the present invention includes the hot melt urethane prepolymer (A) and the compound (B) obtained as described above, and further, if necessary, a urethanization catalyst (C). And the liquid mixture obtained by mixing the foaming agent (D) is introduced between the first release substrate and the second release substrate to form a continuous sheet,
- a substrate having releasability from the obtained polyurethane foam sheet and a substrate subjected to a release treatment are used. be able to.
- a substrate having water vapor permeability and releasability it is preferable to use a substrate having water vapor permeability and releasability.
- release paper for example, release paper, release treated cloth, water-repellent treated cloth, orefin sheets and films such as polyethylene and polypropylene, fluororesin film, plastic film with release paper, and the like are included.
- plastic film with release paper for example, a plastic film with release paper in which polyurethane resin for a skin layer conventionally used for artificial leather or synthetic leather is coated on release paper can be used.
- polyurethane resin for the skin layer a solvent-based, water-based, or solvent-free polyurethane resin can be used.
- the polyurethane foam sheet, the first release substrate and the second release substrate used when manufacturing the laminate sheet, the hot-melt urethane prepolymer (A) and the compound (B) The difference in the 180 degree peel strength (JIS test number, K 6854-2) with respect to the liquid mixture or the obtained polyurethane foam sheet is 1.0 NZ 25 mm or more. Is preferred. If there is a strong difference, when the first and second release substrates are peeled off, the liquid mixture or the obtained polyurethane foam sheet does not undergo cohesive rupture, and either one of the substrates is used. It becomes possible to peel off only.
- a base material generally used for artificial leather or synthetic leather such as a nonwoven fabric, a woven fabric, or a knitted fabric may be used.
- a base material generally used for artificial leather or synthetic leather such as a nonwoven fabric, a woven fabric, or a knitted fabric.
- various plastic sheets and films, plastic film with release paper, release paper with adhesive, sheet with adhesive, film with adhesive, release paper, paper and the like can be used.
- a nonwoven fabric impregnated with at least one or more of a solvent-based, water-based or solvent-free polyurethane resin, acrylic resin, butadiene-based resin (SBR, NBR, MBR) or the like can also be used.
- the polyurethane foam sheet or the laminate sheet obtained by the production method of the present invention may be used as a whole or in a dot form using another base material and a solvent-based, water-based, or non-solvent-based, hot-melt-based adhesive. It can also be used after bonding into a fiber (spider web) shape.
- the hot-melt urethane prepolymer (A) used in the present invention is a compound having an isocyanate group capable of forming a crosslinked structure by reacting with water in a molecule and having a solid or viscous property at room temperature. It is.
- urethane prepolymers are often of relatively low molecular weight, but those having a number average molecular weight (Mn) of tens of thousands are also referred to by those skilled in the art as urethane prepolymers.
- urethane prepolymers having a number average molecular weight (Mn) of tens of thousands can also be used.
- the number average molecular weight (Mn) of the hot melt urethane prepolymer (A) is preferably in the range of 500 to 30,000, more preferably in the range of 1,000 to 10,000. If the number average molecular weight of the hot melt urethane prepolymer (A) is in such a range, the melt viscosity will be in a suitable range.
- the melt viscosity of the hot melt urethane prepolymer (A) at 125 ° C. measured with a cone-plate viscometer is preferably 100 to: L 00,000 mPa ⁇ s, more preferably 1000 to 50, 00 OmP a -s range.
- the melt viscosity at 125 ° C is within the above range, the mixing efficiency when the hot melt urethane prepolymer (A) and the compound (B) having at least two active hydrogen atom-containing groups (B) are melted by heating is excellent.
- the resulting liquid mixture is water After contacting with steam or moisture (water) to cause water foaming, the resin viscosity increases due to cooling and solidification, and it is possible to reduce collapse of bubbles due to winding pressure and the like during processing.
- the hot melt urethane prepolymer (A) used in the present invention has both moisture crosslinking reactivity (moisture curability) and hot melt properties.
- the moisture crosslinking reactivity of the hot melt urethane prepolymer (A) is derived from the crosslinking reaction initiated by the reaction of the isocyanate group of the hot melt urethane prepolymer (A) with moisture (water), and isocyanate. This is attributed to the group.
- the hot melt property of the hot melt urethane prepolymer (A) is a property resulting from the molecular structure of the selected urethane prepolymer, which is solid at room temperature but can be melted and coated by heating. It is applied in a molten state, solidifies when cooled, and exhibits adhesiveness.
- Hot melt is a general term for a property or substance that is solid or viscous at room temperature, but melts when heated to become a fluid or liquid state. Hot melt is solvent-free and has a solid or viscous property at room temperature. However, it melts when heat is applied to make it ready for application, and has the property of re-aggregating upon cooling.
- the hot melt urethane prepolymer having an isocyanate group at the molecular terminal used in the present invention (A) can be used under the condition that the polyol and the polyisocyanate are excessive in the number of the isocyanate groups in the polyisocyanate with respect to the hydroxyl group in the polyol. It is obtained by reacting.
- the equivalent ratio of the isocyanate group / hydroxyl group is preferably in the range of 1.1 to 5.0, more preferably in the range of 1.5 to 3.0.
- the hot melt urethane prepolymer (A) may be used in the production.
- a polyester-based polyol that can be used, a condensate of a polyhydric alcohol and a polybasic acid can be used.
- the polyhydric alcohol include ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, 1,3-butanediol, 1,4-butanediol, and 2,2-dimethyl-1,3-propane.
- polyester-based polyol examples include, for example, succinic acid, maleic acid, adipic acid, daltaric acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, dodecanedicarboxylic acid, One or more of phthalic acid, isophthalic acid, terephthalic acid, hexahydroisophthalic acid and the like can be mentioned.
- a polymer obtained by using the above polyhydric alcohol as an initiator and ring-opening polymerizing a ratatone such as ⁇ -petit mouth ratatone or ⁇ -force prolactone can also be used.
- the polyether-based polyol that can be used when producing the hot melt urethane prepolymer ( ⁇ ) the polyhydric alcohol or the polyester-based polyol is used as an initiator, for example, ethylene oxide And a polymer obtained by ring-opening polymerization of one or more of propylene oxide, butylene oxide, and styrene oxide.
- ring-opening addition polymerization products of lactones such as ⁇ -petit mouth ratatone and ⁇ -force prolatatatone to the polyether polyol can also be used.
- the polycarbonate-based polyol that can be used in producing the hot melt urethane prepolymer ( ⁇ ) the polyhydric alcohol and one or more of diaryl carbonate, dialkyl carbonate, and alkylene carbonate, etc. Poly (alkylene carbonate) obtained by condensation reaction with two or more Nate) diol and the like. Further, the polyhydric alcohol can also be used as a polyol in producing the hot melt urethane prepolymer (A).
- polyisocyanate examples include, for example, phenylene diisocyanate, tolylene diisocyanate (TDI), 4,4′diphenylmethane diisocyanate, 2,4'-Diphenylmethane diisocyanate, aromatic diisocyanate such as naphthalenedidisocyanate, hexamethylene diisocyanate, lysine diisocyanate, cyclohexanediisocyanate, isophorone Diisocyanate, dicyclo mouth hexyl methane diisocyanate, xylylene diisocyanate, tetramethyl xylylene diisocyanate, or other aliphatic diisocyanate or alicyclic diisocyanate, 4,4'-diphenyl Polymer containing dimer and trimer of tandiisocyanate (MDI) Rick MD I,
- the 4,4'-diphenyl methanediisocyanate has a low vapor pressure during heating. It is preferable to use nate (MD I).
- a hot melt urethane prepolymer (A) a hot melt urethane prepolymer (a-2) having a hydrolyzable alkoxysilyl group in addition to an isocyanate group at a molecular terminal can be used.
- the hot melt urethane prepolymer (a-2) is obtained by reacting a compound having both an active hydrogen atom-containing group reactive with a polyol, polyisocyanate or dissocyanate group and a hydrolyzable alkoxysilyl group.
- a compound having both an active hydrogen atom-containing group having a reactivity with an isocyanate group and a hydrolyzable alkoxysilyl group is reacted with the hot menoletourethane prepolymer having an isocyanate group at the molecular terminal.
- a hot melt urethane prepolymer (a-2) can be obtained.
- the moisture crosslinking reaction of the hot melt urethane prepolymer (A) used in the present invention is a reaction between an isocyanate group of the hot melt urethane prepolymer (A) and moisture (water) as described above.
- Hot melt urethane prepolymer In the case of using (a-2), a reaction between the hydrolyzable alkoxysilyl group of the hot melt urethane prepolymer (a-2) and moisture (water) also occurs.
- the compound having an active hydrogen atom-containing group reactive with an isocyanate group and a hydrolyzable alkoxysilyl group, which is used when producing the hot melt urethane prepolymer (a_2), is represented by the following general formula [1] Can be used.
- n represents an integer of 0, 1 or 2.
- X represents an organic residue containing at least one amino group, 7-acid group or mercapto group.
- an amino group, a hydroxyl group, a mercapto group and the like can be used as the active hydrogen atom-containing group of the compound represented by the general formula [1]
- an amino group, a hydroxyl group, a mercapto group and the like can be used as the active hydrogen atom-containing group of the compound represented by the general formula [1]
- Amino groups are preferred from the standpoint of superiority.
- Examples of the hydrolyzable alkoxysilyl group possessed by the compound represented by the general formula [1] include, for example, a halosilyl group, an alkoxysilyl group, an acyloxysilyl group, a phenoxysilyl group, an iminooxysilyl group and an alkenyloxysilinole group.
- a silyl group that is easily hydrolyzed can be used.
- hydrolyzable alkoxysilyl groups trimethoxysilyl, triethoxysilyl, (methyl) dimethoxysilyl, and (methyl) diethoxysilyl groups are preferred because the crosslinking reaction with moisture (water) easily proceeds.
- the compound having both an active hydrogen atom-containing group reactive with the isocyanate group and a hydrolyzable alkoxysilyl group include, for example, ⁇ - (2-amido) Noethyl) aminopropyl trimethoxysilane, ⁇ - (2-hydroxyethyl) aminopropyltrimethoxysilane, ⁇ - (2-aminoethyl) aminopropyltriethoxysilane, ⁇ - (2-hydroxyethyl) aminopropyl Triethoxysilane, y- (2-aminoethyl) aminopropylmethyldimethoxysilane, ⁇ - (2-aminoethyl) aminopropylmethylethoxysilane, ⁇ - (2-hydroxyethyl) aminopropylmethyldimethoxysilane, ⁇ - (2-hydroxylethyl) aminopropylmethylethoxysilane or ⁇ - ( ⁇ , ⁇ 2-dihydroxy-2-ethyl)
- the hot melt urethane prepolymer ( ⁇ ) used in the present invention various known and commonly used methods can be employed. For example, a polyol from which water has been removed is added dropwise to the polyisocyanate, or the polyisocyanate is mixed with the polyol from which water has been removed, and then heated to react in a batch system, or a mixture of the polyol from which water has been removed and
- the hot melt urethane prepolymer ( ⁇ ) is obtained by heating the nitrate, charging the extruder at a predetermined ratio and reacting in a continuous extrusion reaction system until the hydroxyl group of the polyol is eliminated. You.
- a compound having both an active hydrogen atom-containing group reactive with an isocyanate group and a hydrolyzable alkoxysilyl group in the hot melt prepolymer ( ⁇ ) having an isocyanate group at the molecular terminal obtained as described above. Is added, and the mixture is heated and reacted as necessary to obtain a hot melt urethane prepolymer (a-2) having a hydrolyzable alkoxysilyl group in addition to an isocyanate group at a molecular terminal. I can do it.
- This reaction can be carried out without a solvent, but in some cases, it can be carried out in an organic solvent followed by removing the solvent.
- organic solvents such as ethyl acetate, n-butyl acetate, methyl ethyl ketone, and toluene can be used for the reaction. In this case, after the completion of the reaction, it is necessary to remove the solvent by a desolvation method represented by heating under reduced pressure.
- Isoshianeto group-containing Yuryou having hot-melt urethane prepolymer (A) is preferably from 0.5 to 1 .0% by weight, more preferably in the range from 1.0 to 6.0 weight 0/0 Range. Within such a range, the melt viscosity of the hot melt urethane prepolymer (A) after heating and melting will be within an appropriate range, and workability can be improved.
- the amount of carbon dioxide gas generated by water foaming increases and the degree of foaming becomes too large, and the uniformity of the foamed foam is high and the thickness can be easily controlled.
- the crosslink density is also within an appropriate range, the texture is good, and it can be suitable for use in applications such as clothing, synthetic leather, and artificial leather.
- the isocyanate group content of the hot melt urethane prepolymer (A) is within the above range, it is possible to obtain excellent processing suitability, foamability and foam stickiness, appropriate crosslinking density, texture, and durability. Can be.
- the compound (B) having at least two active hydrogen atom-containing groups used in the present invention is mixed with the hot-melt urethane prepolymer (A) having a cisocyanate group at the molecular end by heating and melting to obtain the hot-melt urethane prepolymer.
- the hot-melt urethane prepolymer (A) having a cisocyanate group at the molecular end by heating and melting to obtain the hot-melt urethane prepolymer.
- the liquid mixture obtained by reacting the isocyanate group of Lima (A) with the active hydrogen atom-containing group of the compound (B) is moderately increased and foamed with water. This is extremely effective in fixing the foam in the foam, and contributes to the improvement of the flexibility, mechanical strength and various durability of the obtained foam sheet.
- the active hydrogen atom-containing group of the compound (B) As the active hydrogen atom-containing group of the compound (B), a hydroxyl group and an amino group are preferable.
- Examples of the compound (B) having at least two active hydrogen atom-containing groups used in the present invention include ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycolone, and 1,3-butanediol 1,4-butanediole, 2,2-dimethyl-1-propanediol, 1,6-hexanediol, 3 One Mechinore 1, 5 one Pentanjio one Honoré, 1, 8 Okutanjio one Honoré, diethylene Guriko / / Les, triethylene glycol Honoré, dipropylene glycol Honoré, Toripuropire Ngurikonore, hexane consequent opening hexane one 1, 4 one diol, cyclohexane In addition to diols such as 1,4-dimethanol,
- Polyamines such as 4,4'-diaminodicyclohexyl ⁇ / methane, isophoronediamine, diaminobenzene, diphenylmethanediamine, methylenebisdichloroaniline, and tetramethylhexamethylenediamine can also be used as compound (B). Can be used.
- the above compound (B) can be used alone or in combination of two or more.
- diols are preferred because the reaction with the isocyanate group of the hot melt urethane prepolymer (A) is slow and the reaction rate is easily controlled.
- the amount of the compound (B) having at least two active hydrogen atom-containing groups used is the equivalent of the active hydrogen atom-containing group equivalent of the compound (B) to the isocyanate group equivalent of the hot melt urethane prepolymer (A).
- the ratio [isocyanate group equivalent Z active hydrogen atom-containing group equivalent] force is preferably in the range of 1.5 to 20.0, more preferably in the range of 2.0 to 15.0.
- the foam is fixed by increasing the viscosity of the liquid mixture of the hot melt urethane prepolymer (A) and the compound (B), and the water foaming property is brought into contact with steam or moisture (water).
- the balance of heat resistance due to the formation of a three-dimensional structure by the moisture curing reaction of the isocyanate group after foaming is improved.
- the compound (B) having at least two active hydrogen atom-containing groups may be further added with water, various emulsions such as polyurethane and polyacryl, and various latexes. Can also be used.
- the urethanization catalyst (C) which can be used in the present invention described above has a catalytic constant per weight for the reaction between water and tolylene diisocyanate (TDI) as KW 2, and diethylene glycol (DEG). ) And tolylene diisocyanate (TDI), the catalyst constant per weight expressed in KW is preferably such that the ratio of the catalyst constants, KW 2 KWi, is 0.5 or more.
- the catalyst constant and KW 2 of the urethanization catalyst (C) are constants obtained by measuring the reaction rates of the following urethane-forming reaction formulas (1) and (2).
- Examples of the urethanization catalyst (C) having a catalyst constant ratio KW 2 / KW X of 0.2 or more that can be preferably used in the present invention include, for example, N, N-dimethylcyclohexylamine (DMCHA), N-methyldihexylhexylamine (MD CHA), N, N, N,, N'-tetramethylethylenediamine (TMEDA), N, N, N ', N'-tetramethylpropylenediamine (TMPDA) , N, N, ⁇ ', N'-tetramethynolehexamethylenediamine (TMHMDA), ⁇ , ⁇ , ,,' N ", N ''-pentamethylmethylentriamine (PMDETA), ⁇ , ⁇ , ⁇ ,, ⁇ ", ⁇ " -Pentamethylethylenepropylene triamine ( ⁇ ⁇ ), ⁇ , ⁇ , ⁇ ', ⁇ ", ⁇ " —p
- Ethylenetetramine HMD P ETA
- N, N'-dimethylbiperazine DMP
- N, N, N, 'trimethyl-1-N monoaminoethylpiperazine
- TMNA EP N-methylmorpholine
- HEMO N-hydroxyxylmorpholine
- TMEGDPDA tetramethylethylene glycol dipropylene diamine
- ⁇ , ⁇ , ⁇ ", ⁇ "', ⁇ , , 'I-Xamethinoletriethylenetetramine ⁇
- DMAEE ⁇ , ⁇ , N'-Trimethinoleaminoethylethanolamine
- Amine-based catalysts such as ⁇ ', N'-bisdimethylaminoethyl ether (BDMEE), and trie
- stannous octoate di_n-butyltin diacetate, di-n-butyltin dilaurate, 1,8-diazabicyclo (5,4,0) pentacene-7 (DBU), DBU_p—toluenesulfone
- urethanization catalysts such as acid salts, DBU-formates, DBU-octylates, and DBU-phenol salts may be used in combination.
- the amount of the urethanization catalyst (C) used is preferably in the range of 0.01 to 20 parts by weight, more preferably 0.1 to 20 parts by weight, based on 100 parts by weight of the hot melt urethane prepolymer (A). It is in the range of 10 parts by weight.
- the liquid mixture of the hot-melt urethane prepolymer (A) and the compound (B) does not gel and the workability is good.
- the reaction between the isocyanate group of the hot melt urethane prepolymer (A) and steam or moisture (water) is further promoted, and the isocyanate group and the compound.
- a foam stabilizer (D) can be used if necessary.
- the amount of the foam stabilizer used is determined by the inherent moisture-curing property of the inate group of the hot melt urethane prepolymer (A). Should be kept within the range that does not impair No.
- foam stabilizers for example, trade names SF2969, PRX607, SF2964, SRX274C, SF2961, SF2962, SF2965, SF2908 BY 10-123, SF2904 manufactured by Toray Dow Joung Silicone Co., Ltd.
- foam stabilizer (D) bis (2-ethylhexyl) phthalate (DOP), diisononyl adipate (DINA), bis (2-ethylhexyl) adipate (DOA) ), And a polyether-based surfactant such as an ethylene oxide / propylene oxide copolymer.
- the amount of the foam stabilizer (D) to be used is preferably in the range of 0.1 to 20 parts by weight, more preferably 0.5 to 100 parts by weight, based on 100 parts by weight of the hot melt urethane prepolymer (A). It is in the range of ⁇ 10 parts by weight. As long as the amount of the foam stabilizer is within the above range, the foam stabilizer can be excellent in the foam stability and the mechanical strength of the obtained foam sheet can be excellent.
- a foam stabilizer Inert liquid, silane coupling agent, filler, thixotropic agent, sticking
- the inert gas for example, nitrogen, a rare gas, carbon dioxide, or a halogenated hydrocarbon, or the inert gas in a supercritical state can be used.
- a hot melt urethane prepolymer (a-2) having a hydrolyzable alkoxysilyl group in addition to an isocyanate group at the molecular terminal as the hot melt urethane prepolymer (A)
- a crosslinking catalyst for example, various basic compounds such as malic acid, citric acid, etc .; various basic compounds such as lithium hydroxide, sodium hydroxide, potassium hydroxide, triethylenediamine, etc.
- metal-containing materials such as compounds, tetraisopropyl titanate, di-n-butyltin diacetate, di-n-butyltin dilaterate, di-n-butyltin oxide, dioctyltin oxide or di-n-butyltin maleate It is also possible to use a danging product or other one generally used as a hydrolyzable alkoxysilane crosslinking catalyst.
- silane coupling agent examples include ⁇ -glycidoxypropyltrimethoxysilane, ⁇ -glycidoxypropylmethyljetoxysilane, ⁇ - (3,4-epoxycyclohexyl ⁇ trimethoxysilane, For example, ⁇ -methacryloxypropyltrimethoxysilane, ⁇ / -mercaptopropyltrimethoxysilane, vinyltrimethoxysilane, ⁇ -clopropyl propyltrimethoxysilane, or the like can be used.
- filler for example, calcium carbonate, aluminum hydroxide, barium sulfate, kaolin, talc, carbon black, alumina, magnesium oxide, inorganic / organic balloon, lithiatourmaline, activated carbon and the like can be used.
- surface-treated calcium carbonate, finely powdered silica, bentonite, zeolite, and the like, which are known as a thixotropic agent can also be used.
- a thixotropic agent is preferred from the viewpoint of foam stabilization during water foaming.
- the polyurethane foam sheet and the laminate sheet obtained by the present invention further include: Surface processing such as lamination or coating, or post-processing such as buffing can be appropriately performed by a known method.
- the polyurethane foam sheet obtained by the present invention and the laminate sheet using the same are used as a support for synthetic leather and artificial leather used for shoes, furniture, clothing, vehicles, laces, storage cases, etc., as well as adhesives and adhesives.
- FIG. 1 is a schematic sectional view of a sheet structure having a polyurethane foam sheet according to one embodiment of the present invention. This sheet structure is formed by continuously forming a polyurethane foam sheet 2 between a first release substrate 1 and a second release substrate 3.
- FIG. 2 is a schematic sectional view of a polyurethane foam sheet according to one embodiment of the present invention. The polyurethane foam sheet 2 is obtained by peeling the first release substrate 1 and the second release substrate 3 from the sheet structure of FIG.
- FIG. 3 is a schematic sectional view of a sheet structure having a laminate sheet using a polyurethane foam sheet according to one embodiment of the present invention.
- This sheet structure is obtained by coating a resin for a skin layer (for example, a polyurethane resin for a skin layer) on a first release substrate 1 (for example, release paper) to form a resin film 4 with a release substrate. It is obtained by continuously forming a polyurethane foam sheet 2 between the resin film 4 and the second release substrate 3.
- a resin for a skin layer for example, a polyurethane resin for a skin layer
- first release substrate 1 for example, release paper
- FIG. 4 is a schematic sectional view of a laminate sheet using the polyurethane foam sheet according to one embodiment of the present invention. This laminate sheet is obtained by peeling the first release substrate 1 and the second release substrate 3 from the sheet structure of FIG.
- FIG. 5 shows a laminate using the polyurethane foam sheet according to one embodiment of the present invention. It is a schematic sectional drawing of the sheet
- seat structure which has a body sheet.
- This sheet structure comprises a polyurethane foam sheet 2 between a first release substrate 1 and a third substrate 5 provided with a second release substrate 3 (for example, an adhesive sheet) on the outside. Are formed continuously.
- FIG. 6 is a schematic sectional view of a laminate sheet using the polyurethane foam sheet according to one embodiment of the present invention.
- This laminate sheet is composed of a third base material 5 and a polyurethane foam sheet 2 continuously formed thereon.
- FIG. 7 is a schematic cross-sectional view of a sheet structure having a laminate sheet using a polyurethane foam sheet according to one embodiment of the present invention.
- This sheet structure is obtained by coating a first release base material 1 (for example, release paper) with a resin for a skin layer (for example, polyurethane resin for a skin layer) to form a resin film 4 with a release base material.
- the polyurethane foam sheet 2 is continuously formed between the resin film 4 and the third substrate 5.
- FIG. 8 is a schematic sectional view of a laminated sheet using the polyurethane foam sheet according to one embodiment of the present invention. This laminate sheet is obtained by peeling the first release substrate 1 from the sheet structure of FIG.
- FIG. 9 is a schematic view showing a method for producing a polyurethane foam and a sheet structure having the same according to one embodiment of the present invention.
- a hot menoleto urethane prepolymer (A) having an isocyanate group at the molecular end melted by heating and a compound (B) having at least two active hydrogen atom-containing groups are mixed by a mixing head 7.
- the liquid mixture (not shown) obtained by this is flowed down onto the first release substrate 1.
- a second release base material 3 is superimposed on the liquid mixture to form a sheet structure, which is passed between a pair of application rolls 10 to pass the liquid mixture into a sheet having a uniform thickness.
- the sheet structure is passed through a high-temperature steam humidification chamber 8 so that steam is brought into contact with the sheet-like liquid mixture to foam the liquid mixture, thereby obtaining a polyurethane foam sheet (not shown).
- the sheet structure is passed through a belt press 9 to further improve the thickness accuracy to obtain a desired sheet structure 6a.
- the obtained sheet structure 6a has the same configuration as the sheet structure shown in FIG.
- FIG. 10 shows a polyurethane foam according to an embodiment of the present invention and a foam using the same. It is a schematic diagram which shows the manufacturing method of a laminated body sheet.
- a hot-melt urethane prepolymer (A) having an isocyanate group at the molecular end that has been heated and melted and a compound (B) having at least two active hydrogen atom-containing groups are mixed by a mixing head 7 to obtain a mixture.
- the liquid mixture (not shown) flows down onto the first release substrate 1.
- a second release substrate 3 is superimposed on the liquid mixture to form a first sheet structure, which is passed between a pair of application rolls 10 so that the liquid mixture has a uniform thickness.
- Sheet is a schematic diagram which shows the manufacturing method of a laminated body sheet.
- the second release substrate 3 is peeled off from the first sheet structure.
- a third substrate 5 is superimposed on the surface of the liquid mixture from which the second release substrate 3 has been peeled off to form a second sheet structure.
- the second sheet structure is passed through a high-temperature steam humidification chamber 8 so that water vapor is brought into contact with the sheet-like liquid mixture to cause the liquid mixture to foam, and a polyurethane foam sheet (not shown). ) To obtain the desired sheet structure 6b.
- FIG. 11 is a schematic view showing a polyurethane foam according to one embodiment of the present invention and a method for producing a laminate sheet using the same.
- a hot-melt urethane prepolymer (A) having an isocyanate group at the molecular end, which has been heated and melted, and a compound (B) having at least two active hydrogen atom-containing groups are mixed by a mixing head 7.
- the liquid mixture (not shown) flows down onto the first release substrate 1.
- a second release substrate 3 is superimposed on the liquid mixture to form a first sheet structure, which is passed between a pair of application rolls 10 so that the liquid mixture has a uniform thickness. Sheet.
- the second release substrate 3 is peeled off from the first sheet structure.
- the liquid mixture formed in a sheet shape on the first sheet structure is passed through the high-temperature steam humidification chamber 8 together with the first sheet structure, so that steam is brought into contact with the sheet-shaped liquid mixture. Then, the liquid mixture is foamed with water to obtain a polyurethane foam sheet (not shown). Next, a third base material 5 is superimposed on the polyurethane foam sheet to form a second sheet structure. The second sheet structure is passed through a pair of compression rolls 11 to obtain a desired sheet structure 6. get c.
- FIG. 12 shows a polyurethane foam according to an embodiment of the present invention and a polyurethane foam having the same. It is a schematic diagram which shows the manufacturing method of a sheet structure.
- a hot-melt urethane prepolymer (A) having an isocyanate group at the molecular end, which has been heated and melted, and a compound (B) having at least two active hydrogen atom-containing groups are mixed by a mixing head 7.
- the liquid mixture (not shown) flows down onto the first release substrate 1.
- a second release substrate 3 is superimposed on the liquid mixture to form a sheet structure, which is passed between a pair of application ports 10 so that the liquid mixture has a uniform thickness. Sheet form.
- the sheet structure is passed through a belt press 9 disposed in a high-temperature steam humidification chamber 8 so that the sheet-like liquid mixture is brought into contact with water vapor to foam the liquid mixture with water. (Not shown), and at the same time, the thickness accuracy of the sheet structure is improved to obtain a desired sheet structure 6d.
- the obtained sheet structure 6d has the same configuration as the sheet structure shown in FIG.
- FIG. 13 is a schematic diagram showing a polyurethane foam according to one embodiment of the present invention and a method for producing a laminate sheet using the same.
- a hot-melt urethane prepolymer (A) having an isocyanate group at the molecular end that has been heated and melted and a compound (B) having at least two active hydrogen atom-containing groups are mixed by a mixing head 7 to obtain a mixture.
- the liquid mixture (not shown) flows down onto the first release substrate 1.
- a second release substrate 3 is superimposed on the liquid mixture to form a first sheet structure, which is passed between a pair of application rolls 10 so that the liquid mixture has a uniform thickness. Sheet.
- the second release substrate 3 is peeled off from the first sheet structure.
- a third substrate 5 is superimposed on the surface of the liquid mixture from which the second release substrate 3 has been peeled off to form a second sheet structure.
- the second sheet structure is passed through a belt press 9 disposed in a high-temperature steam humidification chamber 8 so that steam is brought into contact with the sheet-like liquid mixture to foam the liquid mixture with water.
- the thickness accuracy of the sheet structure is improved to obtain a desired sheet structure 6e.
- FIG. 14 is a schematic view showing another method of applying the liquid mixture of the present invention among the polyurethane foam according to one embodiment of the present invention and the method for producing a laminate sheet using the same.
- a hot melt urethane prepolymer (A) having an isocyanate group at the molecular end that has been heated and melted and a compound (B) having at least two active hydrogen atom-containing groups are mixed by a mixing head 7 to obtain a mixture.
- the obtained liquid mixture (not shown) flows down between the first release substrate 1 and the second release substrate 3 to form a first sheet structure.
- the structure is passed between a pair of application rolls 10 to form the liquid mixture into a sheet having a uniform thickness.
- FIG. 15 is a schematic view showing a polyurethane foam according to one embodiment of the present invention and a method for producing a laminate sheet using the same.
- a hot-melt urethane prepolymer (A) having an isocyanate group at the molecular end, which has been heated and melted, and a compound (B) having at least two active hydrogen atom-containing groups are mixed by a mixing head 7.
- the obtained liquid mixture (not shown) flows down between the first release substrate 1 and the second release substrate 3 to form a first sheet structure.
- the liquid mixture is formed into a sheet having a uniform thickness by passing the structure between a pair of application rolls 10.
- the second release substrate 3 is peeled off from the first sheet structure.
- the liquid mixture formed in a sheet shape on the first sheet structure is passed through the high-temperature steam humidification chamber 8 together with the first sheet structure, so that the liquid mixture in the form of sheet is subjected to steam. And the liquid mixture is water-foamed to obtain a polyurethane foam sheet (not shown).
- a third base material 5 is superimposed on the polyurethane foam sheet to form a second sheet structure.
- the second sheet structure is passed through a pair of pressing rolls 11 to obtain a desired sheet structure 6. get g.
- melt viscosity of each of the hot menoleto urethane prepolymers obtained in Examples and Comparative Examples was measured at a measurement temperature of 125 ° C. using a cone plate viscometer (manufactured by ICI).
- the volume (v x ) of each liquid mixture before water foaming was brought into contact with water vapor or moisture (water) and then water foamed.
- the ratio of the volume (v 2 ) of the liquid mixture, that is, V 2 V, was measured and defined as the degree of foaming.
- Crisbon NY 324 a solvent-type polyurethane resin for synthetic leather (manufactured by Dainippon Ink and Chemicals, Inc .; a polyurethane resin obtained by reacting a polycarbonate polyol with diisocyanate), a black pigment DI LAC—6001 ( Dainippon Ink and Chemicals, Inc .; carbon black), methyl ethyl ketone (M
- the fabric hot melt tape was applied to the skin film I of the laminate sheet having the foam sheet.
- C After thermocompression bonding for 5 seconds, measure the peel strength using Tensilon (manufactured by Shimadzu Corporation) in accordance with JISK 6854-2 at a head speed of 20 O mmZ, and evaluate the adhesiveness.
- Tensilon manufactured by Shimadzu Corporation
- the peel strength was measured in the same manner as in the above-mentioned evaluation method of adhesiveness.
- the retention rate and the change in appearance after the evaluation were observed and evaluated according to the following criteria.
- Chris Bon NY324 a solvent-type polyurethane resin for synthetic leather (manufactured by Dainippon Ink and Chemicals, Ltd .; polyurethane resin obtained by reacting polycarbonate polyol with diisocyanate); DILAC, a black pigment —6 0 0 1 (Large A resin solution obtained by mixing Nippon Ink Chemical Industry Co., Ltd .; carbon black), methyl ethyl ketone (MEK) and dimethylformamide (DMF) is coated on release paper using a knife coater. After applying evenly so that the coating amount is 100 gZm2, dry at 70 ° C for 1 minute, and then dry at 120 ° C for 2 minutes, with a release paper of 30 ⁇ m thickness. Skin film I was prepared.
- PTMG polytetramethyllendlycol
- AA adipic acid
- hexanediol in a 1 liter 4-well flask having a number average molecular weight of 130,000.
- HG a polyester polyol having a number average molecular weight of 200, obtained by reacting and, was heated under reduced pressure at 120 ° C. to obtain a water content of 0.1%. Dehydrated to 0 5%.
- urethane prepolymer I After cooling to 60 ° C, 25 parts of 4,4'-diphenylmethanedisocyanate (MDI) was added, and the temperature was raised to 110 ° C to keep the isocyanate group content constant. The reaction was continued for 2 hours to obtain urethane prepolymer I.
- MDI 4,4'-diphenylmethanedisocyanate
- Melt viscosity at 1 2 5 ° C of the urethane prepolymer I is 8 0 0 OMP a.
- S Isoshianeto group content 2.1 weight 0 /. Met.
- EG ethylene dalicol
- DMCHA N-dimethylcyclohexylamine
- the obtained liquid mixture I was immediately introduced between the first release paper and the second release paper set in the roll coater, and was applied in a sheet shape so as to have a thickness of 50 ⁇ . After spraying steam for 1 minute from both sides of the release paper and the second release paper under the condition that the ambient temperature near the surface of both release paper is 80 ° C and the atmospheric humidity is 95%, the temperature is 2 The sheet was allowed to stand for 1 day under an atmosphere of 3 ° C and a relative humidity of 65% to obtain a foam sheet I.
- Table 1 shows the property evaluation results of the obtained foam sheet I.
- Foam sheet I The foaming degree was 2.0 and the foaming property was good, and the heat resistance and hydrolysis resistance were also excellent. In addition, good results were obtained without foam collapse due to stress immediately after processing.
- the liquid mixture I obtained in Example 1 was immediately introduced between the first release paper and the second release paper set in the roll coater, and formed into a sheet so as to have a thickness of 100 irri. After application, apply steam spray from both sides of the first release paper and the second release paper under the condition that the ambient temperature near the surface of both release paper is 80 ° C and the atmospheric humidity is 95%. After that, the mixture was left for 1 day in an atmosphere at a temperature of 23 ° C. and a relative humidity of 65% to obtain a foam sheet ⁇ .
- Foam sheet ⁇ had a good foaming property of a foaming degree of 2.5, and was also excellent in heat resistance and hydrolysis resistance. In addition, good results were obtained without foam collapse due to stress immediately after processing.
- the liquid mixture I obtained in Example 1 was immediately introduced between the first release paper and the second release paper set in the roll coater, and was applied in a sheet form so as to have a thickness of 300 m. Then, from both sides of the first release paper and the second release paper, spray water vapor for 1 minute under the condition that the ambient temperature near the surface of both release paper is 80 ° C and the atmospheric humidity is 95%. After performing this, the mixture was left for 1 day in an atmosphere at a temperature of 23 ° C. and a relative humidity of 65% to obtain a foam sheet ⁇ .
- Table 1 shows the property evaluation results of the obtained foam sheet m.
- the foam sheet m had a good degree of foaming with a degree of foaming of 2.5, and was also excellent in heat resistance and hydrolysis resistance. In addition, good results were obtained without foam collapse due to stress immediately after processing. [Example 4]
- the urethane prevolimer I obtained in Example 1 was heated to 120 ° C., and ethylene glycol (EG), urethanization catalyst DMC HA and foam stabilizer SF 29 were prepared according to the composition of the foaming layer shown in Table 1. 62 (manufactured by Toray Dow Co., Ltd.) was mixed and stirred to obtain a liquid mixture ⁇ .
- EG ethylene glycol
- DMC HA urethanization catalyst
- foam stabilizer SF 29 foam stabilizer SF 29
- the obtained liquid mixture was immediately introduced between the first release paper and the second release paper set on the roll coater, and was applied in a sheet shape so as to have a thickness of 100 m. After spraying water vapor for 1 minute from both sides of the release paper and the second release paper under the condition that the ambient temperature near the surface of both release papers is 80 ° C and the atmospheric humidity is 95%, the temperature The sheet was allowed to stand for 1 day in an atmosphere at 23 ° C and a relative humidity of 65% to obtain a foam sheet IV.
- Table 1 shows the property evaluation results of the obtained foam sheet IV.
- the foam sheet IV has a good foaming property of a foaming degree of 2.5, and has excellent heat resistance and hydrolysis resistance. In addition, good results were obtained without foam collapse due to stress immediately after processing.
- the urethane prepolymer I obtained in Example 1 was heated to 120 ° C., and ethylene glycol (EG), water, urethanization catalyst DMC HA, foam stabilizer SF 29 were prepared according to the composition of the foamed layer shown in Table 2. 62 (manufactured by Toray Dow Koung Co., Ltd.) was stirred and mixed to obtain a liquid mixture ⁇ .
- EG ethylene glycol
- DMC HA urethanization catalyst
- foam stabilizer SF 29 foam stabilizer SF 29
- the obtained liquid mixture ⁇ ⁇ ⁇ was immediately introduced between the first release paper and the second release paper set in the roll coater, and was applied in a sheet shape so as to have a thickness of 100 // m.
- the first release paper is peeled off, and the liquid mixture m applied in a sheet is sprayed with water vapor for 1 minute under conditions that the ambient temperature near the surface is 80 ° C and the atmospheric humidity is 95%.
- the foam sheet V was obtained by being left for 1 day in an atmosphere at a temperature of 23 ° C. and a relative humidity of 65%.
- Table 2 shows the property evaluation results of the obtained foam sheet V.
- Foam sheet V starts The foaming ratio was 2.5 and the foaming property was good, and the heat resistance and the hydrolysis resistance were also excellent. In addition, good results were obtained without foam collapse due to stress immediately after processing.
- the urethane prepolymer I obtained in Example 1 was heated to 120 ° C, and the respective raw materials were mixed and stirred in accordance with the composition of the foamed layer shown in Table 2, and the mixture was further mixed and stirred by blowing nitrogen gas.
- the mixture was mechanically foamed to obtain a foamed liquid mixture I.
- the obtained liquid mixture I was immediately introduced between the first release paper and the second release paper set in the roll coater, and was applied in a sheet shape so as to have a thickness of 50 im. Without performing this, the foam sheet VI was left for one day in an atmosphere at a temperature of 23 ° C. and a relative humidity of 65% to obtain a foam sheet VI.
- Table 2 shows the property evaluation results of the obtained foam sheet VI.
- the foam sheet VI had a foaming degree of 1.0, hardly foamed, and had poor heat resistance and hydrolysis resistance.
- the melt viscosity at 125 ° C was 10 OmPas, the content of isocyanate groups was 4.0% by weight, and the liquid was a liquid at room temperature (atmospheric temperature of 23 ° C). +
- liquid mixture V was obtained by mixing and stirring 6.0 parts of 2-pyrrolidone with 100 parts of the urethane prepolymer.
- the obtained liquid mixture V was immediately introduced between the first release paper and the second release paper set on the roll coater, and was applied in a sheet shape so as to have a thickness of 100 im. After spraying steam for 5 minutes from both sides of the release paper and the second release paper under the condition that the ambient temperature near the surface of both release papers is 80 ° C and the atmospheric humidity is 95%, the temperature It was left for 1 day under an atmosphere of 23 ° C. and a relative humidity of 65% to obtain a foam sheet ⁇ .
- Table 2 shows the property evaluation results of the obtained foam sheet.
- the foam sheet W had a degree of foaming of 1.2 and was slightly foamed. Heat resistance and hydrolysis resistance were excellent.
- the urethane prepolymer I obtained in Example 1 was heated to 120 ° C. and melted, and introduced between the first release paper and the second release paper set on the roll coater, and the thickness was 1
- the ambient temperature near the surface of both release papers is 80 ° C and the ambient humidity is 9 from both sides of the first release paper and the second release paper.
- the foam sheet VI was obtained by being left for 1 day in an atmosphere at a temperature of 23 ° C and a relative humidity of 65%.
- Table 2 shows the property evaluation results of the obtained foam sheet VI.
- the foam sheet VI hardly foamed, had a foaming degree of 1.1, and was inferior in foamability.
- the urethane prepolymer I obtained in Example 1 was heated to 120 ° C, and a liquid mixture obtained by mixing and stirring each raw material according to the composition of the foamed layer shown in Table 3 was set in a roll coater. It was introduced between the thus-prepared skin film I with release paper and another release paper, and applied in a sheet shape so as to have a thickness of 50 ⁇ .
- the other of the sheet A urethane-impregnated non-woven fabric is attached to the surface from which the release paper has been peeled off.
- the laminate sheet I was obtained by being left for 1 day in an atmosphere at a temperature of 23 ° C. and a relative humidity of 65%.
- Table 3 shows the property evaluation results of the obtained laminated sheet I.
- the laminate sheet I had a good foaming degree of 2.0 and good heat resistance and hydrolysis resistance. In addition, good results were obtained without foam collapse due to stress immediately after processing.
- the urethane prepolymer I obtained in Example 1 was heated to 120 ° C, and a liquid mixture obtained by mixing and stirring each raw material according to the composition of the foamed layer shown in Table 3 was set in a roll coater. It was introduced between the thus-prepared skin film I with release paper and another release paper, and applied in a sheet shape so as to have a thickness of 100 ⁇ .
- a urethane-impregnated nonwoven fabric is bonded to the surface of the sheet-like material from which the other release paper has been released, and the skin film I with release paper and the From both sides of the urethane-impregnated non-woven fabric, a steam fog was applied for 1 minute under the condition that the ambient temperature near the surface was 80 ° C and the atmospheric humidity was 95%, and then the temperature was 23 ° C and the relative humidity was 6 It was left under an atmosphere of 5% for one day to obtain a laminate sheet ⁇ .
- the urethane prepolymer I obtained in Example 1 was heated to 120 ° C, and a liquid mixture obtained by mixing and stirring each raw material in accordance with the composition of the foamed layer shown in Table 3 was set on a roll coater. It was introduced between the first release paper and the second release paper, and was applied in a sheet shape so as to have a thickness of 100 ⁇ .
- a urethane-impregnated nonwoven fabric is bonded to the surface of the sheet-like material from which the second release paper has been peeled, and the first release paper and the urethane-impregnated From both sides of the nonwoven fabric, spray water vapor for 1 minute under the condition that the ambient temperature near the surface is 80 ° C and the atmospheric humidity is 95%, and then the temperature is 23 ° C and the relative humidity is 65%. After standing for 1 day under the following conditions, the first release paper was peeled off to obtain a laminate sheet m having a foam sheet.
- Chrisbon TA265 manufactured by Dainippon Ink and Chemicals, Inc.
- Chrisbon NX manufactured by Dainippon Ink & Chemicals, Inc.
- Chris Bon-Axel HM Dainippon Ink & Chemicals, Inc.
- toluene TOL
- dimethylformamide DMF
- Table 3 shows the evaluation results of the properties of the laminated sheet IV.
- Laminated sheet IV has a high degree of foaming
- the foaming property was 2.2, which was good, and the heat resistance and hydrolysis resistance were also excellent. In addition, good results were obtained without foam collapse due to stress immediately after processing.
- the obtained sheet-like material was sampled at a time before the second release paper was peeled off, and the sheet-like material was cut into a width of 25 mm.
- the urethane prepolymer I obtained in Example 1 was heated to 120 ° C, and the raw materials were mixed and stirred in accordance with the composition of the foamed layer shown in Table 3 and nitrogen gas was blown into the mixture to mix and stir. Then, the liquid mixture obtained by mechanical foaming is introduced between the skin film I with release paper set on the roll coater and another release paper, and is formed into a sheet having a thickness of 100 m. Applied.
- an urethane-impregnated nonwoven fabric is bonded to a surface of the sheet-like material from which the other release paper has been peeled off, and an atmosphere at a temperature of 23 ° C and a relative humidity of 65% is provided. It was left under the condition for 1 day to obtain a laminate sheet V.
- Table 3 shows the property evaluation results of the obtained laminated body sheet V.
- the laminate sheet V had a degree of foaming of 1.5, and the uneven pattern of the release paper flowed, resulting in poor appearance. In addition, heat resistance and hydrolysis resistance were poor.
- the sheet-like material is sampled at a point before the other release paper is peeled off, and the sheet-like material is pressed to a width of 25 mm to comply with JISK 68544-2.
- Foaming property Foaming degree (VsZV ⁇ 2.0 2. 2.2 2. 1.5)
- the present invention even in the case of a foam sheet having a relatively small thickness, it is easy to control the foam shape, has a uniform foam shape, has a soft texture, has flexibility, and has a mechanical property.
- Polyurethane foam sheet with excellent mechanical strength and durability such as hydrolysis resistance and heat resistance And a production method capable of continuously and efficiently obtaining a laminate sheet using the polyurethane foam sheet.
- the crosslinking reaction of the isocyanate group of the hot melt urethane prepolymer (A) proceeds in a short time and the foamed foam shape is fixed in a short time, the obtained polyurethane foam sheet and the polyurethane foam are obtained. Even when stress is applied, such as when a laminated sheet using a body sheet is wound up with a roll or the like, the foamed foam does not deform or collapse.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT03780994T ATE537953T1 (de) | 2002-12-27 | 2003-12-22 | Polyurethanschaumeinlage und herstellungsverfahren für schichteinlage damit |
EP03780994A EP1586442B1 (en) | 2002-12-27 | 2003-12-22 | Polyurethane foam sheet and process for producing layered sheet with the same |
US10/540,027 US7670517B2 (en) | 2002-12-27 | 2003-12-22 | Method of producing polyurethane foam sheet and laminated sheet using same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002379816 | 2002-12-27 | ||
JP2002-379816 | 2002-12-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2004060655A1 true WO2004060655A1 (ja) | 2004-07-22 |
WO2004060655B1 WO2004060655B1 (ja) | 2004-10-21 |
Family
ID=32708409
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/016476 WO2004060655A1 (ja) | 2002-12-27 | 2003-12-22 | ポリウレタン発泡体シート及びそれを用いた積層体シートの製造方法 |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1586442B1 (ja) |
KR (1) | KR101029309B1 (ja) |
CN (1) | CN1328037C (ja) |
AT (1) | ATE537953T1 (ja) |
WO (1) | WO2004060655A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1707666A1 (de) | 2005-03-30 | 2006-10-04 | Carl Freudenberg KG | Synthetisches Leder, Verfahren zu dessen Herstellung und dessen Verwendung |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100716658B1 (ko) * | 2005-11-11 | 2007-05-09 | 주식회사 원바이오젠 | 폴리우레탄 폼 드레싱재의 제조방법 |
KR100719433B1 (ko) * | 2005-11-25 | 2007-05-17 | 주식회사 원바이오젠 | 점착력이 있는 친수성 폴리우레탄 필름 드레싱재의 제조방법 |
KR100729177B1 (ko) * | 2006-06-14 | 2007-06-19 | 주식회사 폴리테크 | 자동판매기용 단열성 판재 |
US8288006B2 (en) * | 2009-03-01 | 2012-10-16 | Seiren Co., Ltd. | Artificial leather |
WO2010137699A1 (ja) * | 2009-05-29 | 2010-12-02 | 株式会社イノアック技術研究所 | 貼付材 |
KR101043501B1 (ko) * | 2009-07-29 | 2011-06-23 | 최기영 | 완충재 |
PL2311891T3 (pl) * | 2009-10-16 | 2014-01-31 | Lanxess Deutschland Gmbh | Stabilizator lepkości dla klejów termotopliwych |
KR100944507B1 (ko) * | 2009-10-21 | 2010-03-03 | 권영구 | 실링성과 충격에 대한 흡수성, 슬로우 리바운드 특성을 지닌 저밀도 폴리우레탄 폼 시트의 제조방법 |
US20130119585A1 (en) * | 2011-11-01 | 2013-05-16 | Marvin J. Graham | Method for preparing polymeric sheets derived from polyisocyanates |
CN104228246A (zh) | 2013-06-13 | 2014-12-24 | 美国圣戈班性能塑料公司 | 基于聚氨酯分散液的泡棉密封垫片和粘合胶带 |
CN103467970A (zh) * | 2013-09-06 | 2013-12-25 | 惠州市远安新材料有限公司 | 一种基于聚氨酯应用的粉扑 |
CN104512076B (zh) * | 2013-09-26 | 2018-05-22 | 美国圣戈班性能塑料公司 | 超薄泡棉垫片和粘合胶带 |
WO2016179146A1 (en) | 2015-05-05 | 2016-11-10 | 3M Innovative Properties Company | Curable composition for sound barrier film |
BR112017023677A2 (pt) * | 2015-05-05 | 2018-07-17 | 3M Innovative Properties Company | cobertor de isolamento térmico e acústico |
JP6901894B2 (ja) * | 2017-03-31 | 2021-07-14 | 日本発條株式会社 | ウレタン合成皮革、ウレタン合成皮革の製造方法、化粧用パフ、及び合成皮革付き部材 |
KR101855924B1 (ko) * | 2017-11-24 | 2018-05-09 | 주식회사 에스앤비 | 습기 경화형 폴리우레탄 핫멜트를 이용한 자동차 시트 제조 장치 및 방법 |
KR102064822B1 (ko) * | 2018-02-14 | 2020-02-11 | 주식회사 나노인터페이스 테크놀로지 | 폴리우레탄 폼 시트 제조 방법 및 장치 |
CN108484859A (zh) * | 2018-03-20 | 2018-09-04 | 泉州市安仕登鞋服有限公司 | 一种可自加热聚氨酯鞋垫的制备方法 |
JP7094849B2 (ja) | 2018-09-26 | 2022-07-04 | 大日精化工業株式会社 | 多孔層構成体及びその製造方法 |
CN110216956A (zh) * | 2019-05-24 | 2019-09-10 | 嘉兴德永纺织品有限公司 | 一种膜表面凹凸触感面料的生产工艺 |
CN110480900A (zh) * | 2019-08-01 | 2019-11-22 | 浙江清优材料科技有限公司 | 一种带离型膜的微孔泡棉的连续制备装置 |
CN110480899A (zh) * | 2019-08-01 | 2019-11-22 | 浙江清优材料科技有限公司 | 一种微孔泡棉的连续制备装置 |
CN110539437A (zh) * | 2019-08-01 | 2019-12-06 | 浙江清优材料科技有限公司 | 一种微孔泡棉的连续制备工艺 |
CN110450331A (zh) * | 2019-08-01 | 2019-11-15 | 浙江清优材料科技有限公司 | 一种无基膜微孔泡棉的连续制备工艺 |
CN110480911A (zh) * | 2019-08-01 | 2019-11-22 | 浙江清优材料科技有限公司 | 一种无基膜微孔泡棉的连续制备装置 |
CN110450517A (zh) * | 2019-08-01 | 2019-11-15 | 浙江清优材料科技有限公司 | 一种带离型膜的微孔泡棉的连续制备工艺 |
CN110522157A (zh) * | 2019-09-18 | 2019-12-03 | 广州市达戈彩美容科技有限公司 | 一种以花草粉为填充剂的粉扑及其制备方法 |
CN110959923B (zh) * | 2019-12-03 | 2020-11-03 | 袁惠芬 | 一种防水抗皱的聚氨酯发泡胸杯及其制备工艺 |
CN114193892A (zh) * | 2021-12-15 | 2022-03-18 | 苏州市广得利橡塑有限公司 | 一种疏水性人造革及其制备方法 |
WO2024120897A1 (de) * | 2022-12-07 | 2024-06-13 | Basf Se | Dünne schichten aus polyurethan und verfahren zu deren herstellung |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS538664A (en) * | 1976-07-14 | 1978-01-26 | Toyo Rubber Chemical Ind Co | Process for manufacture of elongate polyurethane foam sheet |
JPS5374573A (en) * | 1976-12-14 | 1978-07-03 | Toyo Rubber Chemical Ind Co | Production of long foamed polyurethane sheet |
JP2001002752A (ja) * | 1999-06-16 | 2001-01-09 | Achilles Corp | 難燃性ポリウレタン発泡シートおよび該シートを用いた合成皮革 |
JP2002249534A (ja) | 2000-12-20 | 2002-09-06 | Tadashi Nagai | ポリウレタン多孔質体及びその製造方法 |
JP2002348347A (ja) * | 2001-05-24 | 2002-12-04 | Dainippon Ink & Chem Inc | 無溶剤型湿気硬化性ホットメルトウレタン樹脂、発泡体、及びそれを用いた発泡シート構造体 |
WO2003042271A1 (fr) | 2001-11-09 | 2003-05-22 | Dainippon Ink And Chemicals, Inc. | Composition de resine d'urethanne thermofusible exempte de solvant, durcissant a l'humidite, produit mousse et structure de feuille utilisant ceux-ci |
JP2003277459A (ja) * | 2002-03-27 | 2003-10-02 | Achilles Corp | ポリウレタンウレア発泡体シートおよび該シートを用いた合成皮革 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3311527A (en) * | 1964-01-20 | 1967-03-28 | Gen Tire & Rubber Co | Polyurethane coated fabric |
DE1769808A1 (de) * | 1967-07-18 | 1971-09-02 | Toyo Tire & Rubber Co | Verfahren zur Herstellung von Kunstleder |
DE2034536A1 (ja) * | 1970-07-11 | 1972-02-03 | ||
DE2137048A1 (de) * | 1970-07-24 | 1972-03-30 | Etablissements Hutchinson Compagnie Nationale du Caoutchouc, Paris | Verfahren und Vorrichtung zur Herstellung eines Lederersatzproduktes |
US3694301A (en) * | 1971-01-04 | 1972-09-26 | Minnesota Mining & Mfg | Hydrophilic nonwoven web and method of making it |
JPS5221563B2 (ja) * | 1973-07-04 | 1977-06-11 | ||
US5397810A (en) * | 1989-07-19 | 1995-03-14 | Mitsui Toatsu Chemicals, Inc. | Polyol, polyurethane resin and utilization thereof |
CZ119297A3 (en) * | 1994-10-20 | 1997-08-13 | Dow Chemical Co | Process for preparing polyurethane foam in the presence of a hydrocarbon foaming agent, a mixture suitable as a polyurethane precursor and polyurethane foam per se |
DE19611367A1 (de) * | 1996-03-22 | 1997-09-25 | Bayer Ag | Verfahren zur Herstellung Kohlenwasserstoff-getriebener Polyurethan-Hartschaumstoffe |
JP3881083B2 (ja) * | 1997-05-14 | 2007-02-14 | 横浜ゴム株式会社 | 湿気硬化型一液ウレタンシーリング材組成物の製造方法及びその組成物 |
DE10009407A1 (de) * | 2000-02-28 | 2001-08-30 | Bayer Ag | Polyurethan-Beschichtungen |
CN1105137C (zh) * | 2000-06-12 | 2003-04-09 | 厚生股份有限公司 | 常压连续卷式热塑性聚氨酯发泡体的制法 |
-
2003
- 2003-12-22 KR KR1020057011751A patent/KR101029309B1/ko active IP Right Grant
- 2003-12-22 AT AT03780994T patent/ATE537953T1/de active
- 2003-12-22 WO PCT/JP2003/016476 patent/WO2004060655A1/ja active Application Filing
- 2003-12-22 EP EP03780994A patent/EP1586442B1/en not_active Expired - Fee Related
- 2003-12-22 CN CNB2003801073334A patent/CN1328037C/zh not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS538664A (en) * | 1976-07-14 | 1978-01-26 | Toyo Rubber Chemical Ind Co | Process for manufacture of elongate polyurethane foam sheet |
JPS5374573A (en) * | 1976-12-14 | 1978-07-03 | Toyo Rubber Chemical Ind Co | Production of long foamed polyurethane sheet |
JP2001002752A (ja) * | 1999-06-16 | 2001-01-09 | Achilles Corp | 難燃性ポリウレタン発泡シートおよび該シートを用いた合成皮革 |
JP2002249534A (ja) | 2000-12-20 | 2002-09-06 | Tadashi Nagai | ポリウレタン多孔質体及びその製造方法 |
JP2002348347A (ja) * | 2001-05-24 | 2002-12-04 | Dainippon Ink & Chem Inc | 無溶剤型湿気硬化性ホットメルトウレタン樹脂、発泡体、及びそれを用いた発泡シート構造体 |
WO2003042271A1 (fr) | 2001-11-09 | 2003-05-22 | Dainippon Ink And Chemicals, Inc. | Composition de resine d'urethanne thermofusible exempte de solvant, durcissant a l'humidite, produit mousse et structure de feuille utilisant ceux-ci |
JP2003277459A (ja) * | 2002-03-27 | 2003-10-02 | Achilles Corp | ポリウレタンウレア発泡体シートおよび該シートを用いた合成皮革 |
Non-Patent Citations (1)
Title |
---|
J.AM. CHEM. SOC., vol. 82, 1960, pages 642 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1707666A1 (de) | 2005-03-30 | 2006-10-04 | Carl Freudenberg KG | Synthetisches Leder, Verfahren zu dessen Herstellung und dessen Verwendung |
DE102005014317A1 (de) * | 2005-03-30 | 2006-10-05 | Carl Freudenberg Kg | Synthetisches Leder, Verfahren zu dessen Herstellung und dessen Verwendung |
Also Published As
Publication number | Publication date |
---|---|
EP1586442A1 (en) | 2005-10-19 |
KR20050084464A (ko) | 2005-08-26 |
CN1732082A (zh) | 2006-02-08 |
EP1586442B1 (en) | 2011-12-21 |
CN1328037C (zh) | 2007-07-25 |
WO2004060655B1 (ja) | 2004-10-21 |
ATE537953T1 (de) | 2012-01-15 |
KR101029309B1 (ko) | 2011-04-13 |
EP1586442A4 (en) | 2006-01-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3776428B2 (ja) | ポリウレタン発泡体シート及びそれを用いた積層体シートの製造方法 | |
WO2004060655A1 (ja) | ポリウレタン発泡体シート及びそれを用いた積層体シートの製造方法 | |
KR101776539B1 (ko) | 피혁 유사 시트 | |
JP4721492B2 (ja) | 一つまたはそれ以上のポリウレタンシートを有する複合材料構成物、その製造方法およびその使用 | |
JP6135966B1 (ja) | 湿気硬化型ホットメルトウレタン組成物、その発泡硬化物の製造方法、合成皮革、及び、その製造方法 | |
JP4854171B2 (ja) | 圧縮性発泡体テープおよび該テープの製造方法 | |
JP2011178826A (ja) | ウレタンプレポリマー | |
JP2016503440A (ja) | 水性ポリウレタン分散液の、成形体を貼り合わせるための使用 | |
JP4029667B2 (ja) | 無溶剤型湿気硬化性ホットメルトウレタン樹脂組成物、発泡体及びそれを用いたシート構造体 | |
JP4038608B2 (ja) | 耐久性に優れた無溶剤型湿気硬化性ホットメルトウレタン樹脂組成物、発泡体、及びそれを用いたシート構造体 | |
JP4051609B2 (ja) | 人工皮革または合成皮革 | |
JP4107032B2 (ja) | 無溶剤型湿気硬化性ホットメルトウレタン樹脂組成物、発泡体、及びそれを用いたシート構造体 | |
WO2019235122A1 (ja) | 合成皮革 | |
JP6836736B2 (ja) | 合成皮革 | |
JP2002088662A5 (ja) | ||
JP2003049147A (ja) | 合成皮革用無溶剤型湿気硬化性ホットメルトウレタン樹脂接着剤及びそれを用いた合成皮革構成体 | |
JP4258135B2 (ja) | 発泡体、及びそれを用いた発泡シート構造体 | |
JP2002249534A (ja) | ポリウレタン多孔質体及びその製造方法 | |
TW201708389A (zh) | 凝固物之製造方法 | |
WO2003042271A1 (fr) | Composition de resine d'urethanne thermofusible exempte de solvant, durcissant a l'humidite, produit mousse et structure de feuille utilisant ceux-ci | |
KR20190077232A (ko) | 발포체 형성용 조성물, 발포체, 발포체의 제조 방법 및 피혁용재 | |
JP2017025198A (ja) | 凝固物の製造方法 | |
TWI801668B (zh) | 多孔層結構體及其製造方法 | |
JP2001187811A (ja) | ポリウレタン樹脂及びその製造法、樹脂組成物並びにシート状物 | |
JP5992214B2 (ja) | 発泡ウレタンシートの製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): CN KR US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
B | Later publication of amended claims |
Effective date: 20040614 |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
ENP | Entry into the national phase |
Ref document number: 2006079589 Country of ref document: US Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2003780994 Country of ref document: EP Ref document number: 10540027 Country of ref document: US Ref document number: 1020057011751 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 20038A73334 Country of ref document: CN |
|
WWP | Wipo information: published in national office |
Ref document number: 1020057011751 Country of ref document: KR |
|
WWP | Wipo information: published in national office |
Ref document number: 2003780994 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 10540027 Country of ref document: US |