GB1299242A - Method of making a polyurethane article having a resilient mass bonded to a rigid structure - Google Patents
Method of making a polyurethane article having a resilient mass bonded to a rigid structureInfo
- Publication number
- GB1299242A GB1299242A GB1417270A GB1417270A GB1299242A GB 1299242 A GB1299242 A GB 1299242A GB 1417270 A GB1417270 A GB 1417270A GB 1417270 A GB1417270 A GB 1417270A GB 1299242 A GB1299242 A GB 1299242A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mixture
- foam
- rigid
- mould
- resilient
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
- C08J9/143—Halogen containing compounds
- C08J9/147—Halogen containing compounds containing carbon and halogen atoms only
-
- 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
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
-
- 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
-
- 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
- C08G18/61—Polysiloxanes
-
- 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
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Polyurethanes Or Polyureas (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
Abstract
1299242 Polymethane foam article UNIVERSAL OIL PRODUCTS CO 24 March 1970 [2 April 1969] 14172/70 Heading B5A [Also in Division C3] A polyurethane article comprising a rigid foam structure bonded to a resilient foam mass, e.g. a rigid foam seat with a resilient foam cushion bonded thereto, is made by introducing into an encompassing mould a first mixture of polyols having an average molecular weight less than 725, a polymeric isocyanate, and a first blowing agent as specified below; allowing this mixture to foam and cure to a rigid structure; removing part or all of the mould; covering at least one exposed surface of the rigid structure with a further mould section to form an enclosed cavity, and introducing a second mixture of polyols having an average molecular weight greater than 3000, a polymeric isocyanate, an alcohol monomer present from 0À1% to 15% by weight of the second mixture and a second blowing agent as specified below, this second mixture being allowed to foam, cure and thereby form a resilient mass bonded to the rigid structure. The first blowing agent is either dichloro-difluoromethane, trichlorofluoromethane or trichloro-trifluoroethane present in an amount from 0À04% to 13% by weight of the first mixture and the second blowing agent is any of these flurocarbons or dichlorofluoromethane present in an amount from 0À07% to 13% by weight of the second mixture. The mould sections may be of silicone rubber, or of epoxy resin cured against a leather surface to provide a simulated grain finish, a release agent being used. A denser skin may. be provided on either of the foam surfaces either by appropriate formulation of the foam mixture, or by applying a polyurethane coating to the mould surface, e.g. by two-part spraying, before casting or by coating the finished product. A two part mould is used to cast a rigid foam seat, the upper part having vent holes and the lower part carrying a pin-mounted threaded insert which becomes embedded in the foam when cured (Fig. 7, not shown). This rigid seat, provided with a vent hole, is then used as a top mould half in combination with a further lower mould section (Fig. 8, not shown) in which the second foam mixture is foamed and cured to form a resilient cushion bonded to the rigid seat. Preferably the rigid portion is formed with a peripheral groove or other edge formation to give an improved bond with resilient mass (Figs. 3 to 6, not shown). Examples of various polyol formulations are given together with suitable amine catalysts and surfactants. The isocyanates may be e.g. polymethylene, polyphenylisocyanate or a mixture of toluene and methane diisocyanates, and the monomeric alcohol preferably comprises 1, 4 butane diol, 1. 4 cyclohexane dimethanol or 1, 6 hexane diol. A preferred polyol mixture for the first mixture comprises a polyoxypropylene derivative of pentaerythritol terminated by four secondary hydroxy groups and a copolymer of dimethylsiloxane and ethylene glycol. The polyol for the second mixture may be polyether based or a propylene oxide adduct of trimethylpropane trimethylpropane terminated with ethylene oxide. Suitable formulations for the coatings are also given.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US81262869A | 1969-04-02 | 1969-04-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1299242A true GB1299242A (en) | 1972-12-13 |
Family
ID=25210167
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1417270A Expired GB1299242A (en) | 1969-04-02 | 1970-03-24 | Method of making a polyurethane article having a resilient mass bonded to a rigid structure |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE747906A (en) |
DE (1) | DE2015399B2 (en) |
FR (1) | FR2038183B1 (en) |
GB (1) | GB1299242A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0068820A1 (en) * | 1981-06-27 | 1983-01-05 | BP Chemicals Limited | Process for making polyurethane foam |
WO2006034640A1 (en) * | 2004-09-28 | 2006-04-06 | Bayer Materialscience Ag | A polyurethane composite, its preparation and use |
ES2367611A1 (en) * | 2009-05-07 | 2011-11-07 | Centro Tecnológico De Grupo Copo, S.L.U. | Method for obtaining a foamed piece, device for putting it into practice and piece obtained. (Machine-translation by Google Translate, not legally binding) |
CN111990759A (en) * | 2020-07-24 | 2020-11-27 | 浙江圣奥家具制造有限公司 | Table with special-shaped bearing part and manufacturing method of special-shaped bearing part |
CN113211814A (en) * | 2021-03-26 | 2021-08-06 | 陈晓华 | Terminal for producing foamed plastic |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2335330A2 (en) * | 1975-10-27 | 1977-07-15 | Arnaud Guy | Expanded resin article of furniture with fabric covering - formed by expanding resin successively in two compartments of covering successively |
-
1970
- 1970-03-24 GB GB1417270A patent/GB1299242A/en not_active Expired
- 1970-03-25 BE BE747906D patent/BE747906A/en unknown
- 1970-04-01 DE DE19702015399 patent/DE2015399B2/en active Pending
- 1970-04-02 FR FR7011949A patent/FR2038183B1/fr not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0068820A1 (en) * | 1981-06-27 | 1983-01-05 | BP Chemicals Limited | Process for making polyurethane foam |
WO1983000117A1 (en) * | 1981-06-27 | 1983-01-20 | Tenhagen, Rudolf, Johann | Process for making polyurethane foam |
WO2006034640A1 (en) * | 2004-09-28 | 2006-04-06 | Bayer Materialscience Ag | A polyurethane composite, its preparation and use |
US8017229B2 (en) | 2004-09-28 | 2011-09-13 | Bayer Materialscience Ag | Polyurethane composite, its preparation and use |
ES2367611A1 (en) * | 2009-05-07 | 2011-11-07 | Centro Tecnológico De Grupo Copo, S.L.U. | Method for obtaining a foamed piece, device for putting it into practice and piece obtained. (Machine-translation by Google Translate, not legally binding) |
CN111990759A (en) * | 2020-07-24 | 2020-11-27 | 浙江圣奥家具制造有限公司 | Table with special-shaped bearing part and manufacturing method of special-shaped bearing part |
CN113211814A (en) * | 2021-03-26 | 2021-08-06 | 陈晓华 | Terminal for producing foamed plastic |
Also Published As
Publication number | Publication date |
---|---|
FR2038183B1 (en) | 1975-01-10 |
FR2038183A1 (en) | 1971-01-08 |
BE747906A (en) | 1970-08-31 |
DE2015399B2 (en) | 1975-01-09 |
DE2015399A1 (en) | 1970-10-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |