WO2015190237A1 - 熱可塑性樹脂組成物及びその成形品 - Google Patents
熱可塑性樹脂組成物及びその成形品 Download PDFInfo
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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
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F212/06—Hydrocarbons
- C08F212/08—Styrene
- C08F212/10—Styrene with nitriles
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
- C08F265/04—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00 on to polymers of esters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
- C08F265/04—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00 on to polymers of esters
- C08F265/06—Polymerisation of acrylate or methacrylate esters on to polymers thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F291/00—Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds according to more than one of the groups C08F251/00 - C08F289/00
- C08F291/02—Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds according to more than one of the groups C08F251/00 - C08F289/00 on to elastomers
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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
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/08—Copolymers of styrene
- C08L25/12—Copolymers of styrene with unsaturated nitriles
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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
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/003—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds
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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
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/04—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to rubbers
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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
- C08L55/00—Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
- C08L55/02—ABS [Acrylonitrile-Butadiene-Styrene] polymers
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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
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Definitions
- the present invention includes a polycarbonate resin and a graft copolymer using a rubbery polymer having a specific average particle size and particle size distribution as a rubber component, and balance of physical properties such as impact resistance, fluidity, and heat resistance.
- the present invention relates to an excellent thermoplastic resin composition.
- the present invention relates to a molded article formed by molding this thermoplastic resin composition.
- a composition comprising a polycarbonate resin and an ABS resin (hereinafter referred to as “PC / ABS resin composition”) is excellent in impact resistance, heat resistance, and molding processability. It is used for various applications including office equipment parts. Since ABS resin uses butadiene rubber, it is inferior in weather resistance. Therefore, AES resin and acrylic rubber using ethylene-propylene-nonconjugated diene rubber that does not contain this diene in the polymer main chain. There has also been proposed a composition comprising an ASA-based resin and a polycarbonate resin (hereinafter referred to as “PC / ASA-based resin composition”).
- Patent Document 1 proposes a thermoplastic resin composition composed of an ASA resin using a composite rubber composed of a conjugated diene rubbery polymer having a specific structure and a crosslinked acrylic ester polymer, and a polycarbonate resin. Yes.
- Patent Document 2 is composed of a polymer unit composed of (meth) acrylic acid ester having a specific structure represented by phenyl methacrylate as a fluidity improver and a polymer unit composed of aromatic vinyl.
- An aromatic polycarbonate resin composition containing a copolymer and a rubber-modified resin that is an impact improver has been proposed.
- thermoplastic resin compositions are not yet satisfactory in terms of the balance of physical properties such as impact resistance, fluidity, and heat resistance, and improvements are desired.
- An object of the present invention is to provide a thermoplastic resin composition having an excellent balance of physical properties such as impact resistance, fluidity, and heat resistance, and a molded product obtained from the thermoplastic resin composition.
- the present inventor has obtained a graft polymer obtained by graft polymerization of a monomer such as vinyl cyanide monomer or aromatic vinyl monomer on a rubbery polymer having a specific average particle size and particle size distribution.
- a monomer such as vinyl cyanide monomer or aromatic vinyl monomer
- the inventors have found that the above object can be achieved by using a copolymer, and have reached the present invention.
- the gist of the present invention is as follows.
- a thermoplastic resin comprising 10 to 95 parts by weight of a polycarbonate resin (A) and 5 to 90 parts by weight of the following graft copolymer (B) in a total amount of 100 parts by weight.
- Composition. Graft copolymer (B): The weight average particle size is 150 to 450 nm, the particle size cumulative weight fraction is 10% by weight, 50% to 250 nm, and 90% by weight is 450 to 450 nm. 20 to 90 parts by weight of one or more monomers including at least an aromatic vinyl monomer and / or a vinyl cyanide monomer are added to 10 to 80 parts by weight of a rubbery polymer having a wavelength of 650 nm. Graft copolymer obtained by graft polymerization (100 parts by weight of rubber polymer and monomer in total)
- Graft copolymer (B) The weight average particle size is 150 to 450 nm, the particle size cumulative weight fraction is 10% by weight, 50% to 250 nm, and 90% by weight is 450 to 450 nm. 20 to 90 parts by weight of one or more monomers including at least an aromatic vinyl monomer and / or a vinyl cyanide monomer are added to 10 to 80 parts by weight of a rubbery polymer having a wavelength of 650 nm.
- Graft copolymer obtained by graft polymerization 100 parts by weight of rubber polymer and monomer in total
- Copolymer (C) Two or more monomers selected from aromatic vinyl monomers, vinyl cyanide monomers, and other vinyl monomers copolymerizable therewith are copolymerized Copolymer obtained by
- thermoplastic resin composition having an excellent balance of physical properties such as impact resistance, fluidity and heat resistance, and a molded product formed by molding the thermoplastic resin.
- (meth) acrylic acid means one or both of “acrylic acid” and “methacrylic acid”.
- the “(meth) acrylic acid alkyl ester” means one or both of “acrylic acid alkyl ester” and “methacrylic acid alkyl ester”.
- the polycarbonate resin (A) may be referred to as “component (A)”, the graft copolymer (B) as “component (B)”, and the copolymer (C) as “component (C)”.
- thermoplastic resin composition comprises 10 to 95 parts by weight of a polycarbonate resin (A), 5 to 90 parts by weight of the following graft copolymer (B), and 0 to 50 parts by weight of the following copolymer (C). And 100 parts by weight in total.
- the thermoplastic resin composition of the present invention comprises 10 to 95 parts by weight of the polycarbonate resin (A), 5 to 90 parts by weight of the graft copolymer (B), and 0 to 50 parts by weight of the copolymer (C).
- a thermoplastic resin composition having an excellent balance of physical properties such as impact resistance, fluidity, and heat resistance is obtained. If any one of these components is outside the above range, the balance of physical properties such as impact resistance, fluidity, and heat resistance is poor.
- the content of the polycarbonate resin (A) is preferably 20 to 90 parts by weight, and more preferably 30 to 70 parts by weight.
- the content of the graft copolymer (B) is preferably 10 to 80 parts by weight, and more preferably 10 to 60 parts by weight.
- the content of the copolymer (C) is preferably 0 to 45 parts by weight, more preferably 0 to 40 parts by weight (polycarbonate resin (A), graft copolymer (B) and copolymer). (C) 100 parts by weight in total).
- the polycarbonate resin (A) is a polymer obtained by a phosgene method in which various dihydroxydiaryl compounds and phosgene are reacted, or a transesterification method in which a dihydroxydiaryl compound and a carbonate such as diphenyl carbonate are reacted.
- a typical example is an aromatic polycarbonate resin produced from 2,2-bis (4-hydroxyphenyl) propane (bisphenol A).
- dihydroxydiaryl compound examples include bisphenol 4-, bis (4-hydroxyphenyl) methane, 1,1-bis (4-hydroxyphenyl) ethane, 2,2-bis (4-hydroxyphenyl) butane, 2, 2-bis (4-hydroxyphenyl) octane, bis (4-hydroxyphenyl) diphenylmethane, 2,2-bis (4-hydroxy-3-methylphenyl) propane, 1,1-bis (4-hydroxy-3- 3-butylphenyl) propane, 2,2-bis (4-hydroxy-3-bromophenyl) propane, 2,2-bis (4-hydroxy-3,5-dibromophenyl) propane, 2,2-bis (4- Bis (hydroxyaryl) alkanes such as hydroxy-3,5-dichlorophenyl) propane, 1,1-bis ( -Hydroxyphenyl) cyclopentane, bis (hydroxyaryl) cycloalkanes such as 1,1-bis (4-hydroxyphenyl) cyclohexane, 4,4′
- Trihydric or higher phenols include phloroglucin, 4,6-dimethyl-2,4,6-tri- (4-hydroxyphenyl) -heptene, 2,4,6-trimethyl-2,4,6-tri- ( 4-hydroxyphenyl) -heptane, 1,3,5-tri- (4-hydroxyphenyl) -benzol, 1,1,1-tri- (4-hydroxyphenyl) -ethane and 2,2-bis- (4 , 4-di (4-hydroxyphenyl) cyclohexyl) -propane and the like.
- polycarbonate resin (A) those having a viscosity average molecular weight (Mv) of 10,000 to 80,000, particularly 15,000 to 60,000 are preferably used.
- the polycarbonate resin (A) it is preferable to produce a product having such a viscosity average molecular weight by using the above-mentioned dihydroxydiaryl compound and the like, and a molecular weight adjusting agent, a catalyst or the like as necessary.
- polycarbonate resin (A) examples include commercially available products such as “Iupilon Series”, “Novalex Series” manufactured by Mitsubishi Engineering Plastics, and “Taflon Series” manufactured by Idemitsu Kosan Co., Ltd.
- polycarbonate resin (A) two or more kinds may be mixed and used as the polycarbonate resin (A).
- polycarbonate resin (A) two or more kinds of polycarbonate resins having different viscosity average molecular weights may be mixed and used by adjusting to the above suitable viscosity average molecular weight.
- the graft copolymer (B) is aromatic in the presence of a rubbery polymer having a specific average particle size and particle size distribution (hereinafter sometimes referred to as “rubbery polymer (e)”). Graft-polymerize at least one monomer selected from vinyl monomers and / or vinyl cyanide monomers and other vinyl monomers copolymerizable therewith if necessary. The graft copolymer obtained in this way.
- the rubber type of the rubbery polymer (e) used in the present invention is not particularly limited, and examples thereof include diene rubbers such as polybutadiene, alkyl (meth) acrylate rubbers such as butyl acrylic rubber, and ethylene-propylene rubbers. And ethylene-propylene copolymer rubber, polyorganosiloxysan rubber, diene / alkyl (meth) acrylate composite rubber, polyorganosiloxysan / alkyl (meth) acrylate composite rubber, and the like.
- Preferred are alkyl (meth) acrylate rubbers, diene / alkyl (meth) acrylate composite rubbers, and polyorganosiloxysan / alkyl (meth) acrylate composite rubbers.
- Rubbery polymers can be used singly or in combination of two or more.
- the weight average particle diameter of the rubber polymer (e) is 150 to 450 nm, preferably 200 to 400 nm, from the viewpoint of impact resistance.
- a known method can be used to adjust the weight average particle diameter of the rubber polymer (e).
- the rubber polymer (e) has a particle size of 10% by weight of 50 to 250 nm and a particle size of 90% by weight of 450 to 650 nm from the viewpoint of impact resistance.
- the particle size of 10% by weight is 100 to 200 nm
- the particle size of 90% by weight is 500 to 600 nm.
- the particle size cumulative weight fraction of the rubbery polymer (e) can be adjusted by using a known particle size distribution adjusting method, for example, the following method.
- the rubber polymer having the desired particle size distribution is obtained by introducing an emulsifier and the rubber monomer of the rubber polymer raw material over a long period of time.
- a rubbery polymer having a desired particle size distribution is obtained.
- a rubber polymer having a relatively small particle diameter is produced in advance, and this is agglomerated and enlarged to obtain an agglomerated and enlarged rubbery polymer having a desired particle size distribution.
- the weight average particle size and particle size distribution can be adjusted by appropriately selecting the type or amount of the emulsifier.
- the pH of the latex is lowered as the rubbery monomer is dropped, and stability may not be maintained and agglomerates may be generated.
- the rubber polymer latex with a relatively small particle diameter is mixed with an acid group-containing copolymer latex to enlarge the rubber polymer. It is preferable to add a condensed acid salt before mixing the acid group-containing copolymer latex. By enlarging in this way, a rubbery polymer (e) having a desired average particle size and particle size distribution can be obtained. By adding a condensed acid salt, the production of a rubber polymer having a small particle diameter can be adjusted.
- a salt of a condensed acid such as phosphoric acid or silicic acid and an alkali metal and / or alkaline earth metal is used.
- a salt of pyrophosphoric acid and an alkali metal which is a condensed acid of phosphoric acid is preferable, and sodium pyrophosphate or potassium pyrophosphate is particularly preferable.
- the addition amount of the condensed acid salt is preferably 0.1 to 10 parts by weight of the condensed acid salt with respect to 100 parts by mass (as solid content) of the rubber polymer latex having a relatively small particle size.
- the acid group-containing copolymer latex used for enlargement is an acid group-containing monomer, a (meth) acrylic acid alkyl ester monomer, and other monomers copolymerizable with these if necessary. It is the latex of the acid group containing copolymer obtained by superposing
- an unsaturated compound having a carboxy group is preferable, and examples of the compound include (meth) acrylic acid, itaconic acid, crotonic acid and the like, and (meth) acrylic acid is particularly preferable.
- An acid group containing monomer may be used individually by 1 type, and may use 2 or more types together.
- Examples of (meth) acrylic acid alkyl ester monomers include esters of acrylic acid and / or methacrylic acid with alcohols having a linear or branched alkyl group having 1 to 12 carbon atoms, such as acrylic acid. Methyl, ethyl acrylate, propyl acrylate, n-butyl acrylate, isobutyl acrylate, t-butyl acrylate, 2-ethylhexyl acrylate, methyl methacrylate, ethyl methacrylate, propyl methacrylate, n-butyl methacrylate, Examples thereof include isobutyl methacrylate, t-butyl methacrylate, 2-ethylhexyl methacrylate and the like. Of these, (meth) acrylic acid alkyl esters having an alkyl group having 1 to 8 carbon atoms are particularly preferred. One (meth) acrylic acid alkyl ester monomer may be used alone, or two or more
- the other monomer is a monomer copolymerizable with the acid group-containing monomer and the (meth) acrylic acid alkyl ester monomer, and the acid group-containing monomer and the alkyl (meth) acrylate.
- monomers include aromatic vinyl monomers (eg, styrene, ⁇ -methylstyrene, p-methylstyrene, etc.), vinyl cyanide monomers (eg, acrylonitrile, methacrylonitrile, etc.), Examples thereof include compounds having two or more polymerizable functional groups (for example, allyl methacrylate, polyethylene glycol ester dimethacrylate, triallyl cyanurate, triallyl isocyanurate, triallyl trimellitic acid, etc.). Another monomer may be used individually by 1 type and may use 2 or more types together.
- the amount of the polymerizable monomer used is such that the acid group-containing monomer is preferably 5 to 40% by weight, more preferably 8 to 30% by weight, based on 100% by weight of the acid group-containing copolymer latex.
- the meth) acrylic acid alkyl ester monomer is preferably 60 to 95% by weight, more preferably 70 to 92% by weight, and other copolymerizable monomers are preferably 0 to 48% by weight, more preferably 0%. ⁇ 30% by weight. If the ratio of the acid group-containing monomer is less than the above lower limit, the enlargement ability is insufficient. When the ratio of the acid group-containing monomer exceeds the above upper limit, a large amount of agglomerates are produced during the production of the acid group-containing copolymer latex.
- the acid group-containing copolymer latex can be produced by a general emulsion polymerization method.
- emulsifiers used in emulsion polymerization include carboxylic acid-based emulsifiers exemplified by oleic acid, palmitic acid, stearic acid, alkali metal salts of rosin acid, alkali metal salts of alkenyl succinic acid, alkyl sulfates, alkyl benzene sulfones.
- Known emulsifiers such as anionic emulsifiers selected from sodium acid, sodium alkylsulfosuccinate, sodium polyoxyethylene nonylphenyl ether sulfate and the like can be used alone or in combination of two or more.
- the entire amount may be charged all at the beginning of the polymerization, or a part of the emulsifier may be used initially, and the remaining may be added intermittently or continuously during the polymerization.
- the particle size of the acid group-containing copolymer latex, and hence the particle size of the enlarged rubber polymer (e) is affected, so it is necessary to select the appropriate amount and method of use. There is.
- a thermal decomposition type initiator As the polymerization initiator used for polymerization, a thermal decomposition type initiator, a redox type initiator, or the like can be used.
- the thermal decomposition type initiator include potassium persulfate, sodium persulfate, and ammonium persulfate.
- the redox type initiator include organic peroxides represented by cumene hydroperoxide-sodium formaldehyde sulfoxylate-iron. Combinations of salts and the like are exemplified. These can be used alone or in combination of two or more.
- mercaptans such as t-dodecyl mercaptan and n-octyl mercaptan to adjust the molecular weight
- chain transfer agents such as terpinolene and ⁇ -methylstyrene dimer
- alkali or An electrolyte can also be added as an acid or a thinning agent.
- the addition amount of the acid group-containing copolymer latex is preferably 0.1 to 10 parts by mass (as solids) with respect to 100 parts by mass (as solids) of the rubber polymer latex having a relatively small particle size, 0.3-7 parts by mass is more preferable. If the addition amount of the acid group-containing copolymer latex is less than the above lower limit, enlargement does not proceed sufficiently, and a large amount of coagulum may be generated. When the addition amount of the acid group-containing copolymer latex exceeds the above upper limit, the pH of the enlarged latex is lowered, and the latex tends to become unstable.
- a cross-linked structure may be introduced into the rubbery polymer (e).
- the cross-linking agent used in this case include divinylbenzene, allyl (meth) acrylate, ethylene glycol di (meth) acrylate, diallyl phthalate, dicyclo Pentadiene di (meth) acrylate, trimethylolpropane tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, 1,4-butanediol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, triary Examples include lucyanurate and triallyl isocyanurate. These can be used alone or in combination of two or more.
- examples of the aromatic vinyl monomer include styrene, ⁇ -methylstyrene, p-methylstyrene, bromostyrene and the like. Species or two or more can be used. In particular, styrene and ⁇ -methylstyrene are preferable.
- vinyl cyanide monomer examples include acrylonitrile, methacrylonitrile, ethacrylonitrile, fumaronitrile and the like, and one or more of these can be used. Particularly preferred is acrylonitrile.
- the rubber polymer (e) is graft-polymerized with other vinyl monomers copolymerizable with these monomers. Also good.
- examples of other copolymerizable vinyl monomers include (meth) acrylic acid ester monomers, maleimide monomers, amide monomers, and the like. Can be used.
- Examples of the (meth) acrylic acid ester monomers include methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, Examples thereof include phenyl (meth) acrylate, 4-t-butylphenyl (meth) acrylate, bromophenyl (meth) acrylate, dibromophenyl (meth) acrylate, chlorophenyl (meth) acrylate, and the like.
- maleimide monomers examples include N-phenylmaleimide and N-cyclohexylmaleimide.
- amide monomers examples include acrylamide and methacrylamide.
- composition ratio of the above-mentioned monomer that is graft-polymerized to the rubber polymer (e) is not particularly limited, but is preferably the following composition ratio.
- Composition ratio of 0 to 30% by weight of monomer Composition ratio of 60 to 90% by weight of aromatic vinyl monomer, 10 to 40% by weight of vinyl cyanide monomer, and 0 to 30% by weight of other copoly
- graft copolymer (B) used in the present invention 20 to 90 parts by weight of one or more of the above-mentioned monomers are added to 10 to 80 parts by weight of the rubbery polymer (e). Polymerized (100 parts by weight in total of rubbery polymer and monomer). When the amount of the rubbery polymer (e) is less than 10 parts by weight, the resulting thermoplastic resin composition has poor impact resistance. If the rubber polymer (e) exceeds 80 parts by weight, the resulting thermoplastic resin composition will be inferior in fluidity.
- the rubbery polymer (e) is preferably 30 to 70 parts by weight and the monomer is preferably 30 to 70 parts by weight.
- the rubbery polymer (e) is 40 to 60 parts by weight and the monomer is 60 parts by weight. More preferably, it is ⁇ 40 parts by weight (total 100 parts by weight of rubbery polymer and monomer).
- the method for producing the graft copolymer (B) of the present invention is not particularly limited, and an emulsion polymerization method, a suspension polymerization method, a bulk polymerization method and the like can be used.
- a latex of the graft copolymer (B) can be obtained by graft polymerization of the above-mentioned monomer to the above-mentioned rubbery polymer (e).
- the latex of the obtained graft copolymer (B) is coagulated by a known method, and the graft copolymer (B) powder can be obtained through washing, dehydration and drying steps.
- the graft component can be selected by appropriately selecting the production conditions such as the type or amount of the emulsifier, the type or amount of the initiator, the polymerization time, the polymerization temperature, and the stirring conditions.
- the molecular weight and graft ratio of can be adjusted.
- an anionic emulsifier is preferable from the viewpoint that the stability of the latex during the emulsion polymerization is excellent and the polymerization rate can be increased.
- the anionic emulsifier include carboxylates (for example, sodium sarcosine, fatty acid potassium, fatty acid sodium, dipotassium alkenyl succinate, rosin acid soap), alkyl sulfate ester salts, sodium alkylbenzene sulfonate, sodium alkylsulfosuccinate, polyoxy Examples include ethylene nonylphenyl ether sulfate sodium ester.
- examples of the emulsifier include sodium sarcosine, dipotassium alkenyl succinate, alkyl sulfate ester salt, sodium alkylbenzene sulfonate, sodium alkyl sulfosuccinate, sodium polyoxyethylene nonylphenyl ether sulfate, and the like.
- dipotassium alkenyl succinate is particularly preferable from the viewpoint of polymerization stability.
- These emulsifiers may be used individually by 1 type, and 2 or more types may be mixed and used for them.
- Examples of a method for recovering the graft copolymer (B) from the graft copolymer (B) latex obtained by emulsion graft polymerization include, for example, hot water in which the graft copolymer (B) latex is dissolved in a coagulant.
- Examples of the coagulant used in the wet method include inorganic acids such as sulfuric acid, hydrochloric acid, phosphoric acid, and nitric acid, and metal salts such as calcium chloride, calcium acetate, and aluminum sulfate, which are selected according to the emulsifier used in the polymerization.
- inorganic acids such as sulfuric acid, hydrochloric acid, phosphoric acid, and nitric acid
- metal salts such as calcium chloride, calcium acetate, and aluminum sulfate, which are selected according to the emulsifier used in the polymerization.
- carboxylic acid soap such as fatty acid soap or rosin acid soap
- the graft copolymer (B) can be recovered by using any coagulant, but an inorganic acid can be used from the viewpoint of residence heat stability.
- graft copolymer (B) It is preferable to recover the graft copolymer (B) using When an emulsifier exhibiting stable emulsifying power is contained even in an acidic region such as sodium alkylbenzene sulfonate, the recovered solution becomes turbid with the inorganic acid, and it is difficult to recover the graft copolymer (B). It is necessary to use a metal salt as an agent.
- a dry graft copolymer (B) from the slurry-like graft copolymer (B) obtained by the wet method first, the remaining emulsifier residue is eluted in water and washed, and then this Examples include a method of dehydrating the slurry with a centrifugal or press dehydrator and the like and then drying with an air dryer, a method of simultaneously performing dehydration and drying with a press dehydrator or an extruder. By this method, a powder or particulate dry graft copolymer (B) is obtained.
- the graft copolymer (B) can be directly sent to an extruder or a molding machine for producing the resin composition to obtain a molded product.
- Graft rate of the graft copolymer (B) used in the present invention (determined from the amount of acetone soluble and insoluble components of the graft copolymer (B) and the weight of the rubbery polymer in the graft copolymer (B)).
- the reduced viscosity of acetone-soluble matter (0.2 g / dL, measured as N, N-dimethylformamide solution at 25 ° C.) is not particularly limited, and those having any structure can be used depending on the required performance. From the viewpoint of balance of physical properties, the graft ratio is preferably 5 to 150%, and the reduced viscosity is preferably 0.2 to 2.0 dL / g.
- the graft ratio of the graft copolymer (B) and the reduced viscosity of the acetone-soluble component can be determined by the method described in the Examples section below.
- the copolymer (C) used in the present invention is selected from aromatic vinyl monomers, vinyl cyanide monomers, and other vinyl monomers copolymerizable with these monomers. It can be obtained by copolymerizing more than one monomer.
- the monomers constituting the copolymer (C) the same monomers as those used in the graft copolymer (B) can be used.
- the monomer composition of the copolymer (C) is not particularly limited.
- aromatic vinyl monomers 60 to 95% by weight, preferably 70 to 85% by weight, vinyl cyanide monomer 5 It is obtained by polymerizing a monomer mixture comprising ⁇ 40% by weight, preferably 15 to 30% by weight, and other monomers copolymerizable therewith 0 to 40% by weight, preferably 0 to 30% by weight. It is a copolymer.
- the aromatic vinyl monomer, vinyl cyanide monomer and other monomers are within the above range, the compatibility of the graft copolymer (B) and the copolymer (C) becomes good, Appearance defects of the resulting molded product are unlikely to occur.
- the method for producing the copolymer (C) is not particularly limited, and methods such as emulsion polymerization, suspension polymerization, solution polymerization, and bulk polymerization can be used.
- the weight average molecular weight (Mw) of the copolymer (C) is preferably in the range of 50,000 to 200,000, more preferably in the range of 75,000 to 150,000.
- the weight average molecular weight of the copolymer (C) is measured by the method described in the Examples section below.
- the thermoplastic resin composition of the present invention comprises a component (A), component (B), and component (C), as necessary, a hindered amine light stabilizer; a hindered phenol compound, a sulfur-containing organic compound compound, Phosphorus-containing organic compound-based antioxidants; phenolic and acrylate-based thermal stabilizers; benzoate-based, benzotriazole-based, benzophenone-based, salicylate-based UV absorbers; organic nickel-based, higher fatty acid amides, etc.
- Plasticizers such as phosphate esters; Halogen-containing compounds such as polybromophenyl ether, tetrabromobisphenol-A, brominated epoxy oligomers, brominated polycarbonate oligomers, etc., flame retardants / difficulty such as phosphorus compounds, antimony trioxide Combustion aid; Odor masking agent; Add pigments and dyes such as carbon black and titanium oxide Door can be. Furthermore, reinforcing agents and fillers such as talc, calcium carbonate, aluminum hydroxide, glass fiber, glass flake, glass bead, carbon fiber, and metal fiber can be added.
- thermoplastic resin composition of the present invention can be obtained by mixing the above-described components.
- a known kneading apparatus such as an extruder, a roll, a Banbury mixer, and a kneader can be used.
- any two of these three components are mixed and kneaded in advance.
- One component can be mixed and kneaded.
- mixing and kneading timing of the other components In the melt kneading, it is preferable to melt knead at 180 to 300 ° C. using various known extruders.
- thermoplastic resin composition of the present invention can be used by mixing with other thermoplastic resins as long as the purpose is not impaired.
- another thermoplastic resin for example, one or more of acrylic resins such as polymethyl methacrylate, polyester resins such as polybutylene terephthalate resin, polyethylene terephthalate resin and polylactic acid resin, and polyamide resins are used. be able to.
- the molded article of the present invention is molded using the above-described thermoplastic resin composition of the present invention.
- the molding method of the thermoplastic resin composition of the present invention is not limited at all. Examples of the molding method include an injection molding method, an extrusion molding method, a compression molding method, an insert molding method, a vacuum molding method, and a blow molding method.
- thermoplastic resin composition of the present invention is excellent in fluidity and moldability, and the molded product of the present invention formed by molding the thermoplastic resin composition is excellent in impact resistance and heat resistance.
- the resin molded product of the present invention is suitably used for a wide variety of applications including vehicle parts, building materials, daily necessities, home appliances and office equipment parts.
- vehicle parts for example, center clusters, register bezels, console upper panels, cup folders, door armrests, inside handles, various switch parts, malls such as audio moldings, or Examples include door mirror housings, radiator grilles, pillar garnishes, rear combination lamp housings, emblems, and roof rails.
- building materials include wall materials, floor materials, window frames, handrails, interior members, and gutters. Daily necessities include tableware, toys and sundries.
- Home appliances and office equipment parts include household appliance parts such as vacuum cleaner housing, television housing, and air conditioner housing, communication equipment housing, laptop computer housing, portable terminal housing, mobile communication equipment housing, and liquid crystal projector housing. Etc. are preferably used.
- Solid content of rubbery polymer latex was determined from the following formula by accurately weighing 1 g of latex, weighing the residue after evaporating volatile components over 20 minutes at 200 ° C.
- the polymerization conversion was determined from the following formula by measuring the solid content.
- ⁇ Particle size> The weight average particle size and particle size cumulative weight fraction of rubbery polymers, enlarged rubbers, blended rubbers, etc. were determined by the photon correlation method using “Microtrac Model: 9230UPA” manufactured by Nikkiso Co., Ltd.
- Polycarbonate resin (A) A commercially available product (“S-2000F” manufactured by Mitsubishi Engineering Plastics Co., Ltd.) was prepared as the polycarbonate (A). The viscosity average molecular weight (Mv) of this polycarbonate resin was 22,000.
- an aqueous solution consisting of 0.09 part of sodium formaldehyde sulfoxylate, 0.006 part of ferrous sulfate heptahydrate, 0.012 part of disodium ethylenediaminetetraacetate, and 5 parts of water was added, Polymerization was started. After the polymerization exotherm was confirmed, the jacket temperature was set to 60 ° C., and the polymerization was continued until no polymerization exotherm was confirmed.
- an aqueous solution consisting of 0.34 parts of sodium formaldehyde sulfoxylate, 0.0005 parts of ferrous sulfate heptahydrate, 0.0015 parts of disodium ethylenediaminetetraacetate, and 10 parts of water was added, Polymerization was started. After the polymerization exotherm was confirmed, the jacket temperature was set to 60 ° C., and the polymerization was continued until no polymerization exotherm was confirmed.
- Rubber polymer latex (e-2) (alkyl acrylate rubber latex) was obtained.
- graft copolymer (B-1)> In a reactor equipped with a reagent injection container, a cooling tube, a jacket heater and a stirrer, 260 parts of water (including water in rubber latex), 140 parts of rubbery polymer latex (e-1) (solid content 60) Part) and 0.5 parts of sodium alkylbenzene sulfonate, and the temperature inside the reactor was raised to 60 ° C., then 0.2 parts of sodium formaldehyde sulfoxylate, ferrous sulfate heptahydrate 0.
- graft copolymer (B-2)> In a reactor equipped with a reagent injection container, a cooling tube, a jacket heater and a stirrer, 220 parts of water (including water in rubber latex), 250 parts of enlarged rubber latex (f-1) (solid part 60 parts) ), And 0.2 part of dipotassium alkenyl succinate (Laomul ASK, manufactured by Kao Corporation), the temperature inside the reactor was raised to 70 ° C., 0.3 part of sodium formaldehyde sulfoxylate, Add an aqueous solution consisting of 0.001 part of ferrous heptahydrate, 0.03 part of disodium ethylenediaminetetraacetate and 10 parts of water, then 15 parts of acrylonitrile, 25 parts of styrene, and 0.2% of t-butyl hydroperoxide.
- aqueous solution consisting of 0.001 part of ferrous heptahydrate, 0.03 part of disodium ethylenediaminetetraa
- Part of the mixture was added dropwise over 2 hours to polymerize. After completion of the dropwise addition, the mixture was stirred for 30 minutes while maintaining the internal temperature at 60 ° C. and then cooled to obtain a graft copolymer (B-2) latex.
- graft copolymer (B-17)> In an autoclave, 240 parts of water (including water in rubber latex), 180 parts of blend rubber latex (g-4) (solid content 60 parts), 1.5 parts of semi-cured beef tallow soda soap, and 0.05% potassium hydroxide Part, 0.004 part of ferrous sulfate heptahydrate, 0.1 part of sodium pyrophosphate, 0.15 part of crystalline glucose, and 10 parts of water, and the temperature inside the reactor is increased to 60 ° C. The temperature rose.
- a mixed liquid of 13 parts of acrylonitrile, 27 parts of styrene, and 0.2 part of cumene hydroperoxide was dropped over 2 hours for polymerization. After completion of dropping, the mixture was stirred for 30 minutes while maintaining the internal temperature at 65 ° C., and then cooled to obtain a graft copolymer (B-17) latex.
- an antioxidant is added to the graft copolymer latex (B-17), 150 parts of a 1.2 wt% sulfuric acid aqueous solution is heated to 75 ° C., and the aqueous solution is stirred while the aqueous solution is stirred. (B-17) 100 parts of latex was gradually added dropwise to solidify the graft copolymer (B-17), and the temperature was raised to 90 ° C. and held for 5 minutes. Next, the solidified product was dehydrated, washed and dried to obtain a powdered graft copolymer (B-17).
- Table 4 shows the graft ratio of the obtained graft copolymer and the reduced viscosity of the acetone-soluble component.
- thermoplastic resin composition ⁇ Examples 1 to 19 and Comparative Examples 1 to 16>
- the polycarbonate resin (A), graft copolymer (B), and copolymer (C) shown in Tables 5 to 7 were used in the formulations shown in Tables 5 to 7, and Sumitomo Seika as additive (D).
- 0.5 parts of a lubricant “Flusen UF” manufactured by the company was mixed using a Henschel mixer. The mixture was melt-kneaded at 260 ° C. using a TEX28V twin screw extruder manufactured by Nippon Steel Co., Ltd. to obtain pellets. The following physical property evaluation was performed using the obtained pellets. The evaluation results are shown in Tables 5-7.
- thermoplastic resin compositions of Examples 1 to 19 of the present invention are excellent in the balance of physical properties such as impact resistance, fluidity, and heat resistance.
- Example 12 was excellent in heat resistance.
- the impact resistance was good.
- Example 1-4 the impact resistance was further improved.
- Example 5 using the graft copolymer recovered with sulfuric acid good results were also obtained in the residence heat stability.
- thermoplastic resin composition excellent in a balance of physical properties such as impact resistance, fluidity and heat resistance, and a molded product thereof.
- the thermoplastic resin composition and molded article thereof of the present invention are useful for applications such as vehicle parts, building materials, daily necessities, home appliances and office equipment parts.
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Abstract
Description
グラフト共重合体(B):重量平均粒子径が150~450nmであり、粒子径累積重量分率において、10重量%の粒子径が50~250nmであり、かつ90重量%の粒子径が450~650nmであるゴム質重合体10~80重量部に、少なくとも芳香族ビニル系単量体及び/又はシアン化ビニル系単量体を含む1種又は2種以上の単量体20~90重量部をグラフト重合して得られるグラフト共重合体(ゴム質重合体と単量体との合計で100重量部)
グラフト共重合体(B):重量平均粒子径が150~450nmであり、粒子径累積重量分率において、10重量%の粒子径が50~250nmであり、かつ90重量%の粒子径が450~650nmであるゴム質重合体10~80重量部に、少なくとも芳香族ビニル系単量体及び/又はシアン化ビニル系単量体を含む1種又は2種以上の単量体20~90重量部をグラフト重合して得られるグラフト共重合体(ゴム質重合体と単量体との合計で100重量部)
共重合体(C):芳香族ビニル系単量体、シアン化ビニル系単量体、及びこれらと共重合可能な他のビニル系単量体から選ばれる2種以上の単量体を共重合することで得られる共重合体
ポリカーボネート樹脂(A)を「(A)成分」、グラフト共重合体(B)を「(B)成分」、共重合体(C)を「(C)成分」と称す場合がある。
本発明の熱可塑性樹脂組成物は、ポリカーボネート樹脂(A)10~95重量部と、下記のグラフト共重合体(B)5~90重量部と、下記の共重合体(C)0~50重量部とを合計で100重量部となるように含有することを特徴とする。
グラフト共重合体(B):重量平均粒子径が150~450nmであり、粒子径累積重量分率において、10重量%の粒子径が50~250nmであり、かつ90重量%の粒子径が450~650nmであるゴム質重合体10~80重量部に、少なくとも芳香族ビニル系単量体及び/又はシアン化ビニル系単量体を含む1種又は2種以上の単量体20~90重量部をグラフト重合して得られるグラフト共重合体(ゴム質重合体と単量体との合計で100重量部)
共重合体(C):芳香族ビニル系単量体、シアン化ビニル系単量体、及びこれらと共重合可能な他のビニル系単量体から選ばれる2種以上の単量体を共重合することで得られる共重合体
ポリカーボネート樹脂(A)とは、種々のジヒドロキシジアリール化合物とホスゲンとを反応させるホスゲン法、又はジヒドロキシジアリール化合物とジフェニルカーボネート等の炭酸エステルとを反応させるエステル交換法によって得られる重合体である。代表的なものとしては、2,2-ビス(4-ヒドロキシフェニル)プロパン(ビスフェノールA)から製造された芳香族ポリカーボネート樹脂が挙げられる。
これらは単独又は2種類以上混合して使用されるが、これらの他に、ピペラジン、ジピペリジルハイドロキノン、レゾルシン、4,4’-ジヒドロキシジフェニル類等を混合して用いても良い。
グラフト共重合体(B)は、特定の平均粒子径と粒子径分布を有するゴム質重合体(以下、「ゴム質重合体(e)」と称す場合がある。)の存在下に、芳香族ビニル系単量体及び/又はシアン化ビニル系単量体、並びに必要に応じて用いられるこれらと共重合可能な他のビニル系単量体から選ばれる少なくとも1種の単量体をグラフト重合して得られたグラフト共重合体である。
個別に用意した異なる粒子径のゴム質重合体を混合することにより、目的とする粒子径分布のゴム質重合体を得る。
比較的小粒子径のゴム質重合体を予め製造し、これを凝集肥大化させることで、目的とする粒子径分布とした凝集肥大化ゴム質重合体とする。
芳香族ビニル系単量体60~90重量%、シアン化ビニル系単量体10~40重量%及び共重合可能な他のビニル系単量体0~30重量%の組成比率;
芳香族ビニル系単量体30~80重量%、(メタ)アクリル酸エステル系単量体20~70重量%及び共重合可能な他のビニル系単量体0~50重量%の組成比率;
芳香族ビニル系単量体20~70重量%、(メタ)アクリル酸エステル系単量体20~70重量%、シアン化ビニル系単量体10~60重量%及び共重合可能な他のビニル系単量体0~30重量%の組成比率;
本発明で用いる共重合体(C)は、芳香族ビニル系単量体、シアン化ビニル系単量体、及びこれらの単量体と共重合可能な他のビニル系単量体から選ばれる2種以上の単量体を共重合することで得られる。共重合体(C)を構成する各単量体は、グラフト共重合体(B)で用いられる単量体と同様のものを用いる事ができる。
本発明の熱可塑性樹脂組成物は、上記(A)成分、(B)成分及び(C)成分の他、必要に応じてヒンダードアミン系の光安定剤;ヒンダードフェノール系、含硫黄有機化合物系、含リン有機化合物系等の酸化防止剤;フェノール系、アクリレート系等の熱安定剤;ベンゾエート系、ベンゾトリアゾール系、ベンゾフェノン系、サリシレート系の紫外線吸収剤;有機ニッケル系、高級脂肪酸アミド類等の滑剤;リン酸エステル類等の可塑剤;ポリブロモフェニルエーテル、テトラブロモビスフェノール-A、臭素化エポキシオリゴマー、臭素化ポリカーボネートオリゴマー等の含ハロゲン系化合物、リン系化合物、三酸化アンチモン等の難燃剤・難燃助剤;臭気マスキング剤;カーボンブラック、酸化チタン等の顔料、及び染料等を添加することができる。更に、タルク、炭酸カルシウム、水酸化アルミニウム、ガラス繊維、ガラスフレーク、ガラスビーズ、炭素繊維、金属繊維等の補強剤や充填剤を添加することもできる。
本発明の熱可塑性樹脂組成物は、上述の成分を混合することで得ることができる。これらの成分の混合には、例えば、押出機、ロール、バンバリーミキサー、ニーダー等の公知の混練装置を用いることができる。
本発明の成形品は、上述の本発明の熱可塑性樹脂組成物を用いて成形されたものである。本発明の熱可塑性樹脂組成物の成形方法は、何等限定されるものではない。成形方法としては、例えば、射出成形法、押出成形法、圧縮成形法、インサート成形法、真空成形法、ブロー成形法などが挙げられる。
以下において、「部」は「重量部」を意味するものとする。
以下の実施例及び比較例で熱可塑性樹脂組成物の製造に用いた各成分の物性の測定方法は以下の通りである。
ウベローデ粘度計を用いて塩化メチレンを溶媒とした溶液で測定し、以下のSchnellの粘度式を用いて算出した。
[η]=1.23×10-4Mv0.83
(式中、ηは固有粘度を示し、Mvは粘度平均分子量を示す)
ゴム質重合体ラテックスの固形分は、ラテックス1gを正確に秤量し、200℃で20分かけて揮発分を蒸発させた後の残渣物を計量し、下記の式より求めた。
重合転化率は、前記固形分を測定し、下記の式より求めた。
ゴム質重合体、肥大化ゴム及びブレンドゴム等の重量平均粒子径、粒子径累積重量分率は、日機装社製「Microtrac Model:9230UPA」を用いて光子相関法より求めた。
グラフト共重合体2.5gにアセトン80mLを加え65℃の湯浴で3時間還流し、アセトン可溶分の抽出を行った。残留したアセトン不溶物を遠心分離により分離し、乾燥した後の重量を測定し、グラフト共重合体中のアセトン不溶物の重量割合を算出した。得られたグラフト共重合体中のアセトン不溶物の重量割合より次の式を用いて、グラフト率を算出した。
グラフト共重合体のアセトン可溶分の濃度が0.2g/dLとなるように調製したN,N-ジメチルホルムアミド溶液について、ウベローデ粘度計を用いて25℃での還元粘度:ηsp/C(単位:dL/g)を測定した。
共重合体をテトラヒドロフランに溶解して得られた溶液を測定試料として、GPC(ゲル浸透クロマトグラフィー)(東ソー(株)製)を用いて測定し、標準ポリスチレン換算法にて算出した。
ポリカーボネート(A)として、市販品(三菱エンジニアリングプラスチック(株)製「S-2000F」)を準備した。このポリカーボネート樹脂の粘度平均分子量(Mv)は22,000であった。
<合成例1:ゴム質重合体ラテックス(e-1)の製造>
試薬注入容器、冷却管、ジャケット加熱機及び撹拌装置を備えた反応器内に、脱イオン水(以下、単に水と記す。)200部、アルキルベンゼンスルホン酸ナトリウム2.4部、アクリル酸n-ブチル10部、トリアリルイソシアヌレート0.05部、及びクメンヒドロパーオキシド0.02部を撹拌下で仕込み、反応器内を窒素置換した後、内容物を昇温した。
試薬注入容器、冷却管、ジャケット加熱機及び撹拌装置を備えた反応器内に、水340部、アルケニルコハク酸ジカリウム(花王社製、ラテムルASK)1.7部、アクリル酸n-ブチル100部、トリアリルイソシアヌレート0.5部、及びt-ブチルハイドロパーオキシド0.34部を撹拌下で仕込み、反応器内を窒素置換した後、内容物を昇温した。
トリアリルイソシアヌレートをメタクリル酸アリルに変更し、使用量を表1に記載した量にした以外は合成例2と同様にして、表1に示す粒子径のゴム質重合体ラテックス(e-3)~(e-6)を得た。
耐熱容器に、1,3-ブタジエン100部、t-ドデシルメルカプタン1.0部、過硫酸カリウム0.15部、ロジン酸ナトリウム1.5部、水酸化カリウム0.02部、ピロリン酸ナトリウム0.3部、及び水200部を仕込み、60℃にて反応させた。15時間後、冷却して反応を終了させて、固形分32重量%、ゲル含有率60重量%で、重量平均粒子径が75nm、10重量%の粒子径が45nmであり、かつ90重量%の粒子径が110nmであるゴム質重合体ラテックス(e-7)(ポリブタジエン系ゴムラテックス)を得た。
t-ドデシルメルカプタン1.0部を、0.5部に変更した以外は、合成例4と同様にして、固形分33重量%、ゲル含有率88重量%で、重量平均粒子径が75nm、10重量%の粒子径が40nmであり、かつ90重量%の粒子径が105nmであるゴム質重合体ラテックス(e-8)(ポリブタジエン系ゴムラテックス)を得た。
試薬注入容器、冷却管、ジャケット加熱機及び撹拌装置を備えた反応器内に、水200部、オレイン酸カリウム2部、ジオクチルスルホコハク酸ナトリウム4部、硫酸第一鉄七水塩0.003部、エチレンジアミン四酢酸二ナトリウム0.009部、及びナトリウムホルムアルデヒドスルホキシレート0.3部を窒素フロー下で仕込み、60℃に昇温した。60℃になった時点から、アクリル酸n-ブチル82部、メタクリル酸18部、及びクメンヒドロパーオキシド0.5部からなる混合物を120分かけて連続的に滴下した。滴下終了後、さらに2時間、60℃のまま熟成を行い、固形分が33重量%、重合転化率が96%、酸基含有共重合体の重量平均粒子径が150nmである酸基含有共重合体ラテックス(K-1)を得た。
アクリル酸n-ブチル82部、メタクリル酸18部を、アクリル酸n-ブチル86部、メタクリル酸14部に変更した以外は、合成例6と同様にして、固形分が33重量%、重合転化率が95%、酸基含有共重合体の重量平均粒子径が110nmである酸基含有共重合体ラテックス(K-2)を得た。
アクリル酸n-ブチル82部、メタクリル酸18部を、アクリル酸n-ブチル89部、メタクリル酸11部に変更した以外は、合成例6と同様にして、固形分が33重量%、重合転化率が97%、酸基含有共重合体の重量平均粒子径が60nmである酸基含有共重合体ラテックス(K-3)を得た。
試薬注入容器、ジャケット加熱機及び撹拌装置を備えた反応器内に、ゴム質重合体ラテックス(e-2)435部(固形分100部)を仕込み、撹拌下でジャケット加熱機により内温を30℃に昇温した。ピロリン酸ナトリウム0.8部を5重量%水溶液として反応器内に添加し、十分撹拌した後、酸基含有共重合体ラテックス(K-1)3部(固形分1部)と酸基含有共重合体ラテックス(K-2)0.9部(固形分0.3部)を添加した。内温30℃を保持したまま30分撹拌し、肥大化ゴムの重量平均粒子径が350nm、10重量%の粒子径が150nmであり、かつ90重量%の粒子径が580nmである肥大化ゴムラテックス(f-1)を得た。
ゴム質重合体ラテックス(e)、ピロリン酸ナトリウム、及び酸基含有共重合体ラテックス(K)の種類と量を表2に記載の通り変更した以外は、合成例9と同様にして、表2に示す粒子径の肥大化ゴムラテックス(f-2)~(f-14)を得た。
撹拌装置を備えた反応器内に、撹拌下でゴム質重合体ラテックス(e-3)260部(固形分60部)と肥大化ゴムラテックス(f-10)174部(固形分40部)を仕込み、重量平均粒子径が130nm、10重量%の粒子径が90nmであり、かつ90重量%の粒子径が490nmであるブレンドゴムラテックス(g-1)を得た。
ゴム質重合体ラテックス又は肥大化ゴムラテックスの種類と量を表3に記載の通り変更した以外は、合成例11と同様にして、表3に示す粒子径のブレンドゴムラテックス(g-2)~(g-5)を得た。
試薬注入容器、冷却管、ジャケット加熱機及び撹拌装置を備えた反応器内に、水(ゴムラテックス中の水を含む)260部、ゴム質重合体ラテックス(e-1)140部(固形分60部)、及びアルキルベンゼンスルホン酸ナトリウム0.5部を添加し、反応器内部の液温を60℃まで昇温した後、ナトリウムホルムアルデヒドスルホキシレート0.2部、硫酸第一鉄七水塩0.003部、エチレンジアミン四酢酸二ナトリウム0.017部、及び水10部からなる水溶液と、アクリロニトリル15部、スチレン25部、及びクメンヒドロパーオキシド0.2部の混合液を2時間にわたって滴下し、重合した。滴下終了後、内温を60℃に保持したまま30分間撹拌した後、冷却し、グラフト共重合体(B-1)ラテックスを得た。
試薬注入容器、冷却管、ジャケット加熱機及び撹拌装置を備えた反応器内に、水(ゴムラテックス中の水を含む)220部、肥大化ゴムラテックス(f-1)250部(固形分60部)、及びアルケニルコハク酸ジカリウム(花王社製、ラテムルASK)0.2部を添加し、反応器内部の液温を70℃まで昇温した後、ナトリウムホルムアルデヒドスルホキシレート0.3部、硫酸第一鉄七水塩0.001部、エチレンジアミン四酢酸二ナトリウム0.03部、及び水10部からなる水溶液を添加し、次いでアクリロニトリル15部、スチレン25部、及びt-ブチルハイドロパーオキシド0.2部の混合液を2時間にわたって滴下し、重合した。滴下終了後、内温を60℃に保持したまま30分間撹拌した後、冷却し、グラフト共重合体(B-2)ラテックスを得た。
ゴム質重合体ラテックス、肥大化ゴムラテックス又はブレンドゴムラテックス、単量体成分、凝固剤を、表4に示す種類と量に変更した以外は、合成例14と同様にして、粉末状のグラフト共重合体(B-3)~(B-16)を得た。
オートクレーブに、水(ゴムラテックス中の水を含む)240部、ブレンドゴムラテックス(g-4)180部(固形分60部)、半硬化牛脂ソーダ石鹸1.5部、及び水酸化カリウム0.05部、硫酸第一鉄七水塩0.004部、ピロリン酸ナトリウム0.1部、結晶ブドウ糖0.15部、及び水10部からなる水溶液を添加し、反応器内部の液温を60℃まで昇温した。60℃に保持したまま、アクリロニトリル13部、スチレン27部、及びクメンヒドロパーオキシド0.2部の混合液を2時間にわたって滴下し、重合した。滴下終了後、内温を65℃に保持したまま30分間撹拌した後、冷却し、グラフト共重合体(B-17)ラテックスを得た。
ブレンドゴムラテックス(g-4)をブレンドゴムラテックス(g-5)に変更した以外は、合成例16と同様にして、粉末状のグラフト共重合体(B-18)を得た。
窒素置換した反応器に、水120部、アルキルベンゼンスルホン酸ソーダ0.002部、ポリビニルアルコール0.5部、アゾイソブチルニトリル0.3部、及びt-ドデシルメルカプタン0.5部と、アクリロニトリル27部、及びスチレン73部からなる単量体混合物を使用し、スチレンの一部を逐次添加しながら開始温度60℃から5時間昇温加熱後、120℃に到達させた。更に、120℃で4時間反応した後、重合物を取り出し、重量平均分子量(Mw)110000の共重合体(C)を得た。
<実施例1~19、比較例1~16>
表5~7に示すポリカーボネート樹脂(A)、グラフト共重合体(B)、及び共重合体(C)を、表5~7に示す配合で用い、更に、添加剤(D)として住友精化社製滑剤「フローセンUF」0.5部をヘンシェルミキサーを用いて混合した。該混合物を日本製鋼製TEX28V二軸押出機を用いて260℃にて溶融混練してペレットを得た。得られたペレットを用いて以下の物性評価を行った。評価結果を表5~7に示す。
各実施例及び比較例で得られたペレットを用いISO試験方法294に準拠して試験片を成形し、各温度(23℃、-30℃)での耐衝撃性を測定した。耐衝撃性はISO179に準拠し、4mm厚みで、ノッチ付きシャルピー衝撃値を測定した。単位:kJ/m2(NB:Non Break、非破断となり計測できないことを示す)
各実施例及び比較例で得られたペレットを用い、ISO1133に準拠して、220℃、10kg荷重の条件でメルトボリュームフローレイトを測定した。単位:cm3/10分
各実施例及び比較例で得られたペレットを用い、ISO試験方法294に準拠して試験片を成形し、ISO178に準拠して温度23℃での曲げ弾性率を測定した。単位:GPa
各実施例及び比較例で得られたペレットを用い、ISO試験方法294に準拠して試験片を成形し、ISO75に準拠して、荷重1.8MPaの荷重たわみ温度を測定した。単位:℃
各実施例及び比較例で得られたペレットを用い、射出成形機(東芝機器製 IS55FP-1.5A、シリンダー温度:280℃、金型温度:60℃)を用いて、成形サイクル50秒で成形した成形品と、成形サイクル10分で成形した成形品を得た。得られた各成形品について、上述の耐衝撃性(23℃)の測定を行った。
本出願は、2014年6月13日付で出願された日本特許出願2014-122591に基づいており、その全体が引用により援用される。
Claims (10)
- ポリカーボネート樹脂(A)10~95重量部と、下記のグラフト共重合体(B)5~90重量部とを合計で100重量部となるように含有することを特徴とする熱可塑性樹脂組成物。
グラフト共重合体(B):重量平均粒子径が150~450nmであり、粒子径累積重量分率において、10重量%の粒子径が50~250nmであり、かつ90重量%の粒子径が450~650nmであるゴム質重合体10~80重量部に、少なくとも芳香族ビニル系単量体及び/又はシアン化ビニル系単量体を含む1種又は2種以上の単量体20~90重量部をグラフト重合して得られるグラフト共重合体(ゴム質重合体と単量体との合計で100重量部) - ポリカーボネート樹脂(A)10~95重量部と、下記のグラフト共重合体(B)5~90重量部と、下記の共重合体(C)50重量部以下とを合計で100重量部となるように含有することを特徴とする熱可塑性樹脂組成物。
グラフト共重合体(B):重量平均粒子径が150~450nmであり、粒子径累積重量分率において、10重量%の粒子径が50~250nmであり、かつ90重量%の粒子径が450~650nmであるゴム質重合体10~80重量部に、少なくとも芳香族ビニル系単量体及び/又はシアン化ビニル系単量体を含む1種又は2種以上の単量体20~90重量部をグラフト重合して得られるグラフト共重合体(ゴム質重合体と単量体との合計で100重量部)
共重合体(C):芳香族ビニル系単量体、シアン化ビニル系単量体、及びこれらと共重合可能な他のビニル系単量体から選ばれる2種以上の単量体を共重合することで得られる共重合体 - 請求項1又は2において、グラフト共重合体(B)の前記ゴム質重合体が、アルキル(メタ)アクリレート系ゴム、ジエン/アルキル(メタ)アクリレート系複合ゴム、及びポリオルガノシロキシサン/アルキル(メタ)アクリレート系複合ゴムから選ばれる1種又は2種以上であることを特徴とする熱可塑性樹脂組成物。
- 請求項1ないし3のいずれか1項において、グラフト共重合体(B)の前記ゴム質重合体は、小粒子径のゴム質重合体のラテックスに縮合酸塩を添加した後、酸基含有共重合体ラテックスと混合して肥大化処理して得られることを特徴とする熱可塑性樹脂組成物。
- 請求項4において、前記縮合酸塩の添加量が、前記小粒子径のゴム質重合体のラテックス100質量部(固形分として)に対し、0.1~10重量部であり、前記酸基含有共重合体ラテックスの添加量が、前記小粒子径のゴム質重合体のラテックス100質量部(固形分として)に対し、0.1~10質量部(固形分として)であることを特徴とする熱可塑性樹脂組成物。
- 請求項4又は5において、前記酸基含有共重合体ラテックスは、酸基含有単量体、(メタ)アクリル酸アルキルエステル系単量体、及び必要に応じてこれらと共重合可能な他の単量体を含む単量体混合物を重合して得られることを特徴とする熱可塑性樹脂組成物。
- 請求項1ないし6のいずれか1項において、グラフト共重合体(B)の前記ゴム質重合体にグラフト重合する前記単量体の組成比率が、
芳香族ビニル系単量体60~90重量%、シアン化ビニル系単量体10~40重量%及び共重合可能な他のビニル系単量体0~30重量%の組成比率;
芳香族ビニル系単量体30~80重量%、(メタ)アクリル酸エステル系単量体20~70重量%及び共重合可能な他のビニル系単量体0~50重量%の組成比率;或いは
芳香族ビニル系単量体20~70重量%、(メタ)アクリル酸エステル系単量体20~70重量%、シアン化ビニル系単量体10~60重量%及び共重合可能な他のビニル系単量体0~30重量%の組成比率;であることを特徴とする熱可塑性樹脂組成物。 - 請求項1ないし7のいずれか1項において、グラフト共重合体(B)のグラフト率が5~150%で、還元粘度が0.2~2.0dL/gであることを特徴とする熱可塑性樹脂組成物。
- 請求項2において、共重合体(C)は、芳香族ビニル系単量体60~95重量%、シアン化ビニル系単量体5~40重量%、及びこれらと共重合可能な他の単量体0~40重量%からなる単量体混合物を重合して得られる共重合体であり、共重合体(C)の重量平均分子量(Mw)が、50000~200000の範囲であることを特徴とする熱可塑性樹脂組成物。
- 請求項1ないし9のいずれか1項に記載の熱可塑性樹脂組成物を成形してなる成形品。
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2015
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- 2015-05-19 US US15/311,049 patent/US10208202B2/en active Active
- 2015-05-19 CN CN201580031582.2A patent/CN106459574B/zh active Active
- 2015-05-19 BR BR112016026520-3A patent/BR112016026520B1/pt active IP Right Grant
- 2015-05-19 AU AU2015272757A patent/AU2015272757B2/en active Active
- 2015-05-19 MY MYPI2016704356A patent/MY181194A/en unknown
- 2015-05-19 KR KR1020167033547A patent/KR102256423B1/ko active IP Right Grant
- 2015-05-19 JP JP2015552709A patent/JP5950059B2/ja active Active
- 2015-05-19 RU RU2017100916A patent/RU2017100916A/ru unknown
- 2015-05-19 WO PCT/JP2015/064272 patent/WO2015190237A1/ja active Application Filing
- 2015-05-19 SG SG11201609505XA patent/SG11201609505XA/en unknown
- 2015-06-01 TW TW104117648A patent/TWI664233B/zh active
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WO2020194683A1 (ja) * | 2019-03-28 | 2020-10-01 | 日本エイアンドエル株式会社 | 熱可塑性樹脂組成物 |
Also Published As
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US10208202B2 (en) | 2019-02-19 |
SG11201609505XA (en) | 2016-12-29 |
EP3156452B1 (en) | 2019-01-23 |
AU2015272757A1 (en) | 2016-12-08 |
CN106459574B (zh) | 2018-11-13 |
BR112016026520B1 (pt) | 2021-11-23 |
BR112016026520A2 (pt) | 2017-08-15 |
KR20170017897A (ko) | 2017-02-15 |
EP3156452A4 (en) | 2018-01-17 |
CN106459574A (zh) | 2017-02-22 |
IL248841B (en) | 2018-10-31 |
US20170107373A1 (en) | 2017-04-20 |
KR102256423B1 (ko) | 2021-05-25 |
RU2017100916A (ru) | 2018-07-16 |
TW201602230A (zh) | 2016-01-16 |
TWI664233B (zh) | 2019-07-01 |
IL248841A0 (en) | 2017-01-31 |
JPWO2015190237A1 (ja) | 2017-04-20 |
JP5950059B2 (ja) | 2016-07-13 |
MY181194A (en) | 2020-12-21 |
EP3156452A1 (en) | 2017-04-19 |
AU2015272757B2 (en) | 2018-08-23 |
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