WO2020175369A1 - ポリブチレンテレフタレート樹脂組成物 - Google Patents
ポリブチレンテレフタレート樹脂組成物 Download PDFInfo
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- WO2020175369A1 WO2020175369A1 PCT/JP2020/007051 JP2020007051W WO2020175369A1 WO 2020175369 A1 WO2020175369 A1 WO 2020175369A1 JP 2020007051 W JP2020007051 W JP 2020007051W WO 2020175369 A1 WO2020175369 A1 WO 2020175369A1
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- terephthalate resin
- resin composition
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- polyester elastomer
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
- C08L67/025—Polyesters derived from dicarboxylic acids and dihydroxy compounds containing polyether sequences
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- 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
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/181—Acids containing aromatic rings
- C08G63/183—Terephthalic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/30—Applications used for thermoforming
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
Definitions
- the present invention relates to a polyethylene terephthalate resin composition. More specifically, the present invention provides a poly(ethylene terephthalate) resin composition having excellent heat resistance properties and high toughness, which is suitable for thin-walled molded products.
- Polyptyrene terephthalate resin is excellent in mechanical properties, electrical properties, other physical and chemical properties, and has good processability. It is used for purposes. In particular, due to its excellent electrical characteristics, it is expanding to applications such as home appliances, appliances, automobiles, etc. The trend toward lighter, thinner, shorter and smaller products is remarkable, for example, the outer shell parts are extremely thin.
- a method is often adopted in which parts that have been molded separately are combined later.
- a hook shape is provided on one part and hooked through the hole of the other part to fix it, or a tubular part with a convex part on the outside and a tubular part with a concave part on the inside
- the polybutylene terephthalate resin does not have high toughness, when combining thin-walled molded products, cracks may occur depending on the product shape. Therefore, there was a limit to the degree of freedom in product shape and thickness design.
- the deflection temperature under load is high (the deflection temperature under load at 1.81 ⁇ /1 3 is 60 ° ⁇ or more) Materials are required.
- a polybutylene terephthalate resin composition having excellent tensile properties (toughness) is strongly desired.
- the method of adding an elastomer is generally known. ⁇ 0 2020/175369 2 ⁇ (: 17 2020 /007051
- Patent Document 1 the flowability, toughness, and durability are improved by adding a polyester elastomer resin and a polyfunctional compound having at least three functional groups and at least one alkylene oxide unit to a polyethylene terephthalate resin. We are improving the sex. Further, in Patent Documents 2 and 3, the tensile properties are improved by adding a polyester elastomer resin to a polypropylene terephthalate resin while devising a compounding method. However, heat resistance (deflection temperature under load) is not taken into consideration in these compositions, and it is expected that the deflection temperature under load will be low.
- Patent Document 4 by adding a polyester elastomer resin and talc to a polyethylene terephthalate resin, both fluidity and toughness are achieved and high cycle molding is possible.
- a polyester elastomer resin and talc to a polyethylene terephthalate resin
- both fluidity and toughness are achieved and high cycle molding is possible.
- elastomer in order to obtain a high tensile elongation, it is necessary to add a large amount of elastomer, which causes a problem of the deflection temperature under load and the decrease of elastic modulus.
- These problems can be covered by adding a large amount of talc, but in that case, cracking is likely to occur in a thin-walled molded product, which is not preferable.
- Patent Document 1 Patent No. 5 2 7 2 7 15
- Patent Document 2 Japanese Patent Laid-Open No. 20 06-2 9 8 9 9 3
- Patent Document 3 Japanese Patent Laid-Open No. 9-2 5 5 8 5 7
- Patent Document 4 JP-A-7-5 3 8 5 5
- the present invention is intended to solve the above problems, and an object thereof is to provide a polypropylene terephthalate resin composition having excellent heat resistance and toughness.
- the present inventors have completed the present invention as a result of earnestly examining the constitution and characteristics of a poly(ethylene terephthalate) resin composition in order to solve the above problems.
- the present invention has the following configurations.
- the hard segment/soft segment mass ratio is 85/15 to 50/50, and the poly(ethylene terephthalate) resin composition is characterized in that.
- [2] Includes 86 to 96 parts by mass of the poly(ethylene terephthalate) resin (8) having an intrinsic viscosity (1 V) of 1.0 to 1.3/ 9 and contains 3 to 5 parts of the polyester elastomer (M).
- Thickness obtained by injection molding of the polybutylene terephthalate resin composition Is characterized by having a tensile elongation at break of 50% or more
- Polyethylene terephthalate resin composition according to any one of [1] to [3] ⁇ 0 2020/175369 4 ⁇ (: 170? 2020 /007051
- the content (coupling amount) of each component in the poly(ethylene terephthalate) resin composition of the present invention is the poly(ethylene terephthalate) having an intrinsic viscosity (IV) of 1.0 to 1.31. It is expressed as the amount when the total of resin (8), polyester elastomer (M) and talc ( ⁇ ) having an average particle size of 5 or less is 100 parts by mass.
- polyethylene terephthalate resin (8) having an intrinsic viscosity (IV) of 1.0 to 1.3 ⁇ /9” is referred to as “polyethylene terephthalate resin (8)” and “average particle diameter is "Talc ( ⁇ )” that is 5 or less is abbreviated as “Talc ( ⁇ )”.
- the blending amount (blending ratio) of each component becomes the content (blending ratio) in the polypropylene terephthalate resin composition as it is.
- Polyptyrene terephthalate resin (8) is a polycondensation product of dicarboxylic acid containing terephthalic acid or its ester-forming derivative as the main component and diol containing 1,4-butanediol or its ester-forming derivative as its main component. It is a polymer that can be obtained by a general polymerization method such as a combined reaction.
- Polyethylene terephthalate resin (8) has a repeating unit of butylene terephthalate of preferably 80 mol% or more, more preferably 90 mol% or more, and further preferably 95 mol% or more. , 100 mol% is particularly preferable.
- the polypropylene terephthalate resin (8) may contain other polymerization components in a range that does not impair the characteristics thereof, for example, about 20 mol% or less.
- polybutylene terephthalate resin containing a compounding component examples include polyptyrene (terephthalate/isophthalate), polyptyrene (terephthalate/adibate), polyptyrene (terephthalate/sebacate), polyptyrene (terephthalate/decanedicarboxylate), polyptyrene (terephthalate). /Naphthalate), poly(ptyrene/ethylene) terephthalate and the like. These components may be used alone or in combination of two or more.
- the intrinsic viscosity (IV) of the polypropylene terephthalate resin (8) is from 1.0 to
- Intrinsic viscosity ( ⁇ V) is 1. ⁇ I If it is less than this, sufficient tensile elongation cannot be obtained. If the intrinsic viscosity (IV) is more than 1.3 I/9, sufficient fluidity cannot be obtained, and thin-wall molding tends to be difficult.
- the amount of terminal carboxyl groups of the poly(ethylene terephthalate) resin (8) is not particularly limited.
- the hydrogen ion that dissociates from the terminal carboxyl group plays a catalytic role in the hydrolysis reaction of polyester, so that the hydrolysis reaction accelerates as the amount of the terminal carboxyl group increases. From this viewpoint, it is preferable that the amount of terminal carboxyl groups is small.
- the terminal carboxyl group content (acid value) of the poly(ethylene terephthalate) resin (8) is preferably 406 q/t ⁇ n or less, more preferably 3069 /I ⁇ ⁇ or less, and more preferably 2569/10 ⁇ . It is the following.
- the terminal carboxyl group amount (acid value) (unit: eq/ton) of the polypropylene terephthalate resin (8) is, for example, a predetermined amount of the polypropylene terephthalate resin dissolved in benzyl alcohol to obtain sodium hydroxide. It can be measured by titrating with 1 mol/l benzyl alcohol solution. ⁇ 0 2020/175369 6 ⁇ (: 170? 2020 /007051
- a phenolphthalein solution may be used.
- the content of the above-mentioned polyethylene terephthalate resin (8) is 85 to 99.5 parts by mass. It is preferably 86 to 97 parts by mass, more preferably 86 to 96 parts by mass, further preferably 87 to 95 parts by mass.
- the polyester elastomer (N) used in the present invention is a hard segment composed of an aromatic dicarboxylic acid and a polyester containing an aliphatic and/or alicyclic glycol as a constituent component, an aliphatic polyether, an aliphatic polyester. It is preferable that the polyester elastomer is bonded to at least one soft segment selected from the group consisting of polyester and aliphatic polycarbonate.
- the usual aromatic dicarboxylic acid is widely used as the aromatic dicarboxylic acid that constitutes the hard segment polyester, and is not particularly limited.
- Terephthalic acid isophthalic acid, orthophthalic acid, 2,6-naphthalenedicarboxylic acid, 1,5-naphthalenedicarboxylic acid, 1,2-bis(phenoxy)ethane-'-dicarboxylic acid, 4,4'-biphenyldicarboxylic acid, And functional derivatives thereof.
- terephthalic acid isophthalic acid, 2,6-naphthalenedicarboxylic acid, and 4,4'-biphenyldicarboxylic acid, which tend to have a high crystallization rate and good moldability.
- terephthalic acid and terephthalic acid dimethyl ester isophthalic acid and isophthalic acid dimethyl ester, 2, 6-naphthalenedicarboxylic acid and 2
- 6-Naphthalenedicarboxylic acid dimethyl ester 6-Naphthalenedicarboxylic acid dimethyl ester.
- aliphatic dicarboxylic acids such as adipic acid, sebacic acid, succinic acid, glutaric acid, dimer acid and their functional derivatives
- alicyclic dicarboxylic acids such as hexahydroterephthalic acid, hexahydroisophthalic acid and cyclohexanedicarboxylic acid. Acid and its ⁇ 0 2020/175369 7 ⁇ (: 170? 2020 /007051
- the functional derivative in the dicarboxylic acid component constituting the hard segment polyester.
- Components other than the aromatic dicarboxylic acid are preferably less than 50 mol%, more preferably less than 40 mol%, further preferably less than 30 mol%, and 50 mol% or more, the crystallinity of the polyester elastomer is Tends to decrease, and moldability and heat resistance tend to decrease.
- the polyester elastomer (Mitsumi) used in the present invention as the aliphatic or alicyclic glycol constituting the polyester of the hard segment, general aliphatic or alicyclic glycol is widely used, and is particularly limited. However, alkylene glycols having 2 to 8 carbon atoms are preferred. Ethylene glycol, 1,3-propylene glycol, 1,4-butanediol, 1,6-hexanediol, 1,4-cyclohexanedimethanol are preferred, and ethylene glycol, 1,4-butane are particularly preferred. It is one of the diols.
- an ethylene terephthalate unit (a unit consisting of terephthalic acid and ethylene glycol) or a pentylene terephthalate unit (a unit consisting of terephthalic acid and 1,4-butanediol)
- ethylene terephthalate unit a unit consisting of terephthalic acid and ethylene glycol
- pentylene terephthalate unit a unit consisting of terephthalic acid and 1,4-butanediol
- the aromatic polyester suitable as a polyester constituting a hard segment in the polyester elastomer (Mitsumi) used in the present invention is produced in advance and then copolymerized with a soft segment component, the aromatic polyester is It can be easily obtained according to the usual polyester manufacturing method. Further, it is preferable that the polyester has a number average molecular weight of 100 to 400.
- the soft segment of the polyester elastomer (M) used in the present invention is at least one selected from aliphatic polyether, aliphatic polyester, and aliphatic polycarbonate.
- aliphatic polyether ⁇ 0 2020/175369 8 ⁇ (: 170? 2020 /007051
- Examples of the aliphatic polyester include poly (polycaprolactone), polyenanthlactone, polycaprylolactone, and polyptyrene adipate.
- the aliphatic polycarbonate preferably contains mainly an aliphatic diol residue having 2 to 12 carbon atoms.
- these aliphatic diols include ethylene glycol, 1,3-propylene glycol, 1,
- the aliphatic polycarbonate diol that constitutes the soft segment of the usable polyester elastomer (Mitsumi) and has good low-temperature characteristics it has a low melting point (for example, 70 ° C or less) and It is preferable that the glass transition temperature is low.
- aliphatic polycarbonate diols composed of 1,6-hexanediol used to form the soft segment of polyester elastomers have a low glass transition temperature of around 60°° and a melting point of 50°°. Since it will be later, the low temperature characteristics will be good.
- the aliphatic polycarbonate diol obtained by copolymerizing the above aliphatic polycarbonate diol with, for example, 3-methyl-1,5-pentanediol in an appropriate amount is ⁇ 0 2020/175369 9 ⁇ (: 170? 2020 /007051
- an aliphatic polycarbonate diol composed of 1,9-nonanediol and 2-methyl-1,8-octanediol has a melting point of about 30° and a glass transition temperature of about 70°, which is sufficiently low. Therefore, it corresponds to an aliphatic polycarbonate diol having good low-temperature characteristics.
- the polyester elastomer (Mimi) used in the present invention is a copolymer containing terephthalic acid, 1,4-butanediol, and polyoxytetramethylene glycol as main components because of its economical efficiency, heat resistance, and cold resistance. It is preferable to be united.
- the dicarboxylic acid components constituting the polyester elastomer (Mitsumi) the content of terephthalic acid is preferably 40 mol% or more, more preferably 70 mol% or more, and further preferably 80 mol% or more. It is particularly preferably 90 mol% or more.
- the total of 1,4-butanediol and polyoxytetramethylene glycol is preferably 40 mol% or more, more preferably 70 mol% or more. It is more preferably 80 mol% or more, still more preferably 90 mol% or more.
- the number average molecular weight of the polyoxytetramethylene glycol is 500 to 40.
- the number average molecular weight of the polyoxytetramethylene glycol is more preferably 800 or more and 300 or less, further preferably 100 or more and 250 or less.
- the mass ratio of hard segment/soft segment is from 85/15 to 50/50.
- the hardness (surface hardness) of the polyester elastomer (Mitsumi) used in the present invention is not particularly limited, but for example, a low hardness of about Shorea hardness 45 to a high hardness of about Shorea hardness 75.
- a wide range of polyester elastomers can be used, preferably having a Shore hardness of 50 to 70, more preferably a Shore hardness of 55 to 65.
- the reduced viscosity of the polyester ester elastomer (Mitsumi) used in the present invention is preferably 0.5 /5 /9 or more and 3.5 /5 /9 or less when measured by the measurement method described below. If it is less than 0.5 /9, durability as a resin is low, and if it exceeds 3.5 / 9 , moldability may be insufficient.
- the reduced viscosity of Poryesuteru Erasutoma (Snake) is 1. 0 ⁇ / 9 or 3. More preferably 0 ⁇ / 9 or less 1. 3 ⁇ / 9 or 2.8 ⁇ / 9 or less is still more preferable.
- the acid value is preferably not more than 200 6 9 /I, more preferably not more than 60.
- the polyester ester elastomer (Mitsumi) used in the present invention can be produced by a known method. For example, diester of lower alcohol of dicarboxylic acid, excess amount of low-molecular-weight glycol, and ester exchange reaction of soft segment component in the presence of a catalyst, and polycondensation of the obtained reaction product, or dicarboxylic acid and excess amount of glycol. And the soft segment component is subjected to an esterification reaction in the presence of a catalyst to polycondense the reaction product obtained.Also, a hard segment is prepared in advance, and the soft segment component is added to this to randomize it by an ester exchange reaction.
- the content of the polyester elastomer (Mitsumi) is 0 to 13 parts by mass. By blending (containing) the polyester elastomer (Mitsumi) within this range, it becomes possible to improve the tensile properties (toughness) while maintaining the heat resistance of the polypropylene terephthalate resin composition.
- polyester elastomer (Mitsumi) is contained, the mass ratio of hard segment/soft segment must be within the above specified range.
- the content of the above polyester elastomer (M) is preferably 3 to 13 parts by mass.
- the content of the polyester elastomer (Mitsumi) is more preferably 3 to 12 parts by mass, further preferably 4 to 11 parts by mass.
- the polybutylene terephthalate resin composition of the present invention contains talc ( ⁇ ) having an average particle size of 5 or less.
- the average particle diameter of talc ( ⁇ ) used in the present invention is 5 or less.
- the average particle diameter (weight (volume) 50% diameter of cumulative particle size distribution) of talc ( ⁇ ) is measured by a laser diffraction method.
- Talc The average particle size of ⁇ is preferably 3 or less. From the viewpoint of talc (the lower limit of the average particle size of ⁇ is suppression of aggregation (poor dispersion) and handleability (ease of feeding, etc.)). It is 0 5.
- the talc ( ⁇ ) in the present invention is not particularly limited as long as the above range of the average particle diameter is satisfied, the production site, the production method, the component composition, etc. of the raw material talc.
- the presence or absence of surface treatment is not limited and can be arbitrarily selected.
- the talc ( ⁇ ) in the present invention can be sufficiently dispersed in the polypropylene terephthalate resin composition without surface treatment, even if it is not surface-treated, but when further dispersibility is desired. , Even after surface treatment ⁇ 0 2020/175369 12 ⁇ (: 170? 2020 /007051
- a surface treatment agent for example, known surface treatments such as organic silane coupling agents, organic titanate coupling agents, fatty acids, fatty acid metal salts, fatty acid esters, etc.
- the surface treatment method of talc ( ⁇ 3) is not particularly limited, but a method of physically mixing talc ( ⁇ 3) and each treatment agent can be mentioned.
- a mill such as a mouth mill, a high-speed rotary mill, a jet mill, or a mixer such as a Nauta mixer, a ribbon mixer, or a Henschel mixer can be used.
- the content of talc (o) is 0. 05 to 2 parts by mass, preferably 0. 1 to 1.8 parts by mass, and more preferably 0. 3 to 1. 5 parts by mass.
- the polybutylene terephthalate resin composition of the present invention may optionally contain various known additives within a range not impairing the properties of the present invention.
- Known additives include, for example, colorants such as pigments, mold release agents, heat resistance stabilizers, antioxidants, UV absorbers, light stabilizers, plasticizers, modifiers, antistatic agents, flame retardants, dyes, etc. Is mentioned.
- Examples of the release agent include long-chain fatty acid or its ester, metal salt, amide compound, polyethylene wax, silicone, polyethylene oxide and the like.
- the long-chain fatty acid preferably has 12 or more carbon atoms, and examples thereof include stearic acid, 12-hydroxystearic acid, behenic acid, montanic acid, and the like. Or may be esterified with polyglycol, or may form a metal salt.
- Examples of amide compounds include ethylene bis terephthalamide and methylene bis stearyl amide. These release agents may be used alone or in combination. ⁇ 0 2020/175369 13 ⁇ (: 170? 2020 /007051
- additives can be contained in a total amount of up to 5 parts by mass when the total of (), (M) and ( ⁇ ) is 100 parts by mass.
- the above () , (M) and ( ⁇ ) are preferably added in an amount of 95% by mass or more.
- the polybutylene terephthalate resin composition of the present invention As a production method for producing the polybutylene terephthalate resin composition of the present invention, after blending in the above-mentioned blending composition in an arbitrary blending sequence, it is mixed by a tumbler or a Henschel mixer and melt-kneaded.
- a melt-kneading method any method well known to those skilled in the art can be used, and a single-screw extruder, a twin-screw extruder, a feeder, a Banbury mixer, a throat, or the like can be used. Is preferably used.
- the polybutylene terephthalate resin composition of the present invention has a thickness of 4 obtained by injection molding the polybutylene terephthalate resin composition. It is possible to achieve a tensile fracture elongation of 50% or more for the molded product.
- the tensile elongation at break is preferably 70% or more, more preferably 100% or more.
- the method for measuring the tensile elongation at break is as described in the section of Examples.
- the polypropylene terephthalate resin composition of the present invention can be obtained by injection molding the polybutylene terephthalate resin composition and has a thickness of 0.3
- the tensile elongation at break of the molded product can reach 30% or more.
- the tensile elongation at break is preferably 50% or more, more preferably 60% or more.
- the method for measuring the tensile elongation at break is described in Examples. ⁇ 02020/175369 14 ⁇ (: 170? 2020 /007051
- the sample of 0.19 was dissolved in 25 parts of a mixed solvent of phenol/tetrachloroethane (mass ratio 6/4) and measured at 30° using an Ubbelohde viscous tube. (Unit: ⁇ 1 I/9)
- test piece is
- the strip test piece of was molded by injection molding at a cylinder temperature of 250° and a mold temperature of 50°.
- Polyester elastomer (Mitsumi); ⁇ 02020/175369 16 ⁇ (: 170? 2020 /007051
- Antioxidant ⁇ “ 931 ⁇ 0x 1 01 0 (Miyahachi 3 companies)
- the rate resin composition uses a polypropylene terephthalate resin having an intrinsic viscosity within a specific range, and contains a polyester elastomer and talc having a predetermined particle size in a specific compounding ratio, thereby increasing the deflection temperature under load. It has reached both sides of tensile elongation at break. Furthermore, when a polyester elastomer is included, it can be seen that a high tensile elongation at break can be obtained even in a thin test piece of thickness 0.3.
- the present invention makes it possible to obtain a polypropylene terephthalate resin composition having excellent heat resistance and high toughness, so that it is easy to improve the flexibility of the shape by combining a plurality of parts, reduce the product thickness, and reduce the weight. It will be a great contribution to the industrial world because it will be suitable for applications where precision molding is an issue.
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Abstract
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Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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CN202080016010.8A CN113454161A (zh) | 2019-02-27 | 2020-02-21 | 聚对苯二甲酸丁二醇酯树脂组合物 |
KR1020217030064A KR20210132103A (ko) | 2019-02-27 | 2020-02-21 | 폴리부틸렌테레프탈레이트 수지 조성물 |
EP20763664.8A EP3932990A4 (en) | 2019-02-27 | 2020-02-21 | POLYBUTYLENE TEREPHTHALATE RESIN COMPOSITION |
JP2021502188A JP7367751B2 (ja) | 2019-02-27 | 2020-02-21 | ポリブチレンテレフタレート樹脂組成物 |
US17/433,032 US20220153925A1 (en) | 2019-02-27 | 2020-02-21 | Polybutylene terephthalate resin composition |
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JP2019-033914 | 2019-02-27 | ||
JP2019033914 | 2019-02-27 |
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US (1) | US20220153925A1 (ja) |
EP (1) | EP3932990A4 (ja) |
JP (1) | JP7367751B2 (ja) |
KR (1) | KR20210132103A (ja) |
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TW201943330A (zh) * | 2018-03-29 | 2019-11-01 | 日商拓自達電線股份有限公司 | 電磁波屏蔽膜之保護層用樹脂組成物、電磁波屏蔽膜、及電磁波屏蔽膜之製造方法 |
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JP2001072843A (ja) * | 1999-09-03 | 2001-03-21 | Teijin Ltd | 樹脂組成物 |
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JP2016135831A (ja) * | 2015-01-23 | 2016-07-28 | 東洋紡株式会社 | ポリエステル樹脂組成物 |
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KR20210132103A (ko) | 2021-11-03 |
US20220153925A1 (en) | 2022-05-19 |
JP7367751B2 (ja) | 2023-10-24 |
JPWO2020175369A1 (ja) | 2020-09-03 |
EP3932990A1 (en) | 2022-01-05 |
CN113454161A (zh) | 2021-09-28 |
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