WO2004031295A1 - 透明・耐衝撃性熱可塑性樹脂組成物 - Google Patents
透明・耐衝撃性熱可塑性樹脂組成物 Download PDFInfo
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- 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
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- 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
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- 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
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- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
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- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/10—Homopolymers or copolymers of methacrylic acid esters
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- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/10—Homopolymers or copolymers of methacrylic acid esters
- C08L33/12—Homopolymers or copolymers of methyl methacrylate
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- 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
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- 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
- C08L51/06—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 homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
Definitions
- the present invention relates to a transparent impact-resistant thermoplastic resin composition. More specifically, a resin containing at least one of aromatic vinyl, alkyl methacrylate and vinyl cyanide (hereinafter abbreviated as aromatic vinyl, alkyl methacrylate or vinyl cyanide resin composition), especially aromatic vinyl resin
- aromatic vinyl, alkyl methacrylate or vinyl cyanide resin composition especially aromatic vinyl resin
- the present invention relates to a resin composition or an aromatic vinyl-acryl copolymer resin composition.
- Aromatic butyl, alkyl methacrylate or vinyl cyanide resins are used for various applications by taking advantage of their transparency, but are generally not sufficient in strength in terms of market requirements.
- attempts have been made to introduce a rubber component by various methods.
- the method of adding a graft copolymer having a so-called core seal structure prepared by emulsion polymerization as a rubber component is relatively easy to adjust the morphology such as the content of the rubber component and the particle size.
- this method has a relatively high degree of freedom in designing a balance between impact resistance and transparency.
- the required particle size of the rubber component can be obtained by a general emulsion polymerization method. Since this is a relatively large area, various methods for enlarging rubber particle diameter are being studied. For example, a rubber component having a small particle diameter is coagulated and expanded with an electrolyte such as an acid or a salt with respect to a methyl methacrylate-styrene copolymer resin. There is disclosed a method of adding a core-shell type graft copolymer obtained by graft polymerization of a polymer (see Patent Document 1).
- Patent Document 1 Japanese Patent Publication No. 63-47 7 45
- Patent Document 2 Japanese Patent Application Laid-Open No. 60_1118734
- Patent Document 3 Japanese Patent Application Laid-Open No. 2002-206566
- the present invention provides an aromatic bier, an alkyl methacrylate, or a vinyl cyanide-based resin without impairing the transparency.
- a thermoplastic resin composition provided with impact strength.
- the present inventors have prepared an aromatic rubber, an alkyl methacrylate, or a vinyl cyanide-based resin by using an enlarged rubber prepared using an acid group-containing copolymer having a specific composition focusing on the refractive index. It has been found that it is effective to incorporate the graft copolymer thus obtained, and the present invention has been achieved.
- A 5 to 40 parts by weight of a graft copolymer, and (B) at least one selected from the group consisting of an aromatic vinyl monomer, an alkyl methacrylate monomer, and a cyanated butyl monomer 75 to 100% by weight of a monomer and a copolymer 95 to 60 parts by weight obtained by polymerizing 0 to 25% by weight of a vinyl monomer copolymerizable therewith.
- A) and (B) A total of 100 parts by weight].
- Conjugated diene monomer 40 to 100% by weight, aromatic butyl monomer 60 to 0% by weight, other butyl monomer copolymerizable with conjugated diene monomer 20 to 0%, crosslinkable monomer Of a gen-based rubber (R1) having a volume average particle diameter of 1,500 A or less obtained by polymerizing a monomer mixture comprising 0 to 3% by weight of a monomer and 0 to 3% by weight of a chain transfer agent.
- Acid group-containing copolymer (S) latex 0.1 obtained by polymerizing a monomer mixture comprising 0 to 20% by weight and 0 to 20% by weight of other vinyl monomers copolymerizable therewith. By adding ⁇ 15 parts by weight (as solid content)
- GM monomer mixture
- An impact-resistant thermoplastic resin composition (Claim 1), an acid group-containing copolymer (S) in a graft copolymer (A), a force S, acrylic acid, methacrylic acid, itaconic acid and croton 10 to 20% by weight of at least one unsaturated acid monomer selected from the group consisting of an acid, 20 to 65% by weight of an aromatic vinyl monomer, and at least 1 to 12 carbon atoms in an alkyl group.
- Alkyl acrylate monomer 15 to 30% by weight, alkyl group having 1 to 1 carbon atoms 2, a monomer mixture consisting of 0 to 20% by weight of at least one alkyl methacrylate monomer and 0 to 20% by weight of another butyl monomer copolymerizable therewith.
- Specialty copolymer The impact-resistant thermoplastic resin composition according to claim 1 (claim 2), a gen-based rubber (R 1) 1S having a volume average particle diameter of 150 OA or less in the graft copolymer (A).
- the impact-resistant thermoplastic resin composition according to claim 1 or 2 wherein the composition is obtained by polymerizing 0 to 3% by weight of a crosslinkable monomer and 0 to 3% by weight of a chain transfer agent. 3) The impact-resistant thermoplastic resin according to any one of claims 1 to 3, wherein a difference in refractive index between the graft copolymer (A) and the copolymer (B) is 0.02 or less.
- Acid group-containing polymer latex (S) force after polymerizing a monomer mixture (s1) having a composition in which the unsaturated acid content is lower than or does not include the unsaturated acid content, a The polymer having a multilayer structure obtained by polymerizing a monomer mixture (s 2) having a composition having a saturated acid content higher than that in the case of a uniform composition as an outer layer.
- the impact-resistant thermoplastic resin composition (Claim 6) according to any one of claims 1 to 3, wherein the copolymer (B) is a mixture of two or more polymers or copolymers, and the entire composition is aromatic.
- the gen-based rubber (R 1) in the graft copolymer (A) of the present invention comprises 40 to 100% by weight of a conjugated gen-based monomer, 40 to 0% by weight of an aromatic vinyl-based monomer, and others.
- Examples of the conjugated diene monomer used for the diene rubber (R 1) include various butadiene-substituted products such as butadiene, isoprene, and chloroprene.
- the amount of the gen-based monomer is from 40 to 100% by weight, more preferably from 60 to 95% by weight. %, More preferably 65 to 90% by weight. If the amount of the gen-based monomer is less than 40% by weight, the impact resistance of the molded body tends to be impaired.
- Examples of the aromatic vinyl monomer used for the diene rubber (Ri) include styrene, vinyltoluene, monomethylstyrene, and vinylnaphthalene, or an aromatic nucleus-substituted product thereof, such as a chlorine, bromine, or alkyl group. And the like.
- the amount of the aromatic vinyl monomer used is 60 to 0% by weight, preferably 40 to 0% by weight, more preferably 40 to 5% by weight, and even more preferably 35 to 10% by weight. If the amount of the aromatic vinyl monomer exceeds 40% by weight, the impact resistance of the molded article tends to be impaired.
- Vinyl monomers that can be copolymerized with other conjugated diene monomers used in the diene rubber (R1) include, for example, methyl methacrylate, ethyl methacrylate, propyl methacrylate, butyl methacrylate, and the like.
- Methacrylic acid ester compounds for example, acrylic acid ester compounds such as methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, etc .; It is not limited. These can be used alone or in combination of two or more.
- the refractive index of the graft copolymer (A) obtained by polymerizing the monomer mixture (GM) in the presence of the gen-based rubber (R1) It is preferable to match as much as possible the refractive index of the aromatic resin, alkyl methacrylate or cyanide-based resin (B) which is the matrix resin to be obtained.
- the gen-based rubber (R1) used has an aromatic surface from the viewpoint of adjusting the refractive index. Gen-based rubbers containing group butyl monomer units become practical.
- the refractive index in the present invention is an actually measured value measured by the following method. That is, the refractive index is determined by adding 5 parts by weight (based on solid content) of calcium chloride to a part of the obtained latex, salting out, heating at 70 ° C, dehydrating and drying, and drying powder. It was measured at 23 ° C. using a refractometer (Abego Co., Ltd., Abbe 2T type).
- a refractometer Abego Co., Ltd., Abbe 2T type.
- a guide for prescription setting please refer to the literature such as POLYMER HANDBOOK 4th Edition (JOHN WI LLY & SONS I NC., 1999). It is realistic to calculate using the value of the refractive index, set the rubber (R1) composition, the acid group-containing copolymer (S) composition and the graft (GM) composition, and carry out the polymerization.
- the gen-based rubber (R 1) in the present invention is advantageously obtained by ordinary emulsion polymerization, and the volume average particle diameter is preferably 1,500 A or less. When the volume average particle size exceeds 1,500 A, the polymerization time becomes longer, which causes a problem in industrial productivity.
- crosslinkable monomer used for the diene rubber (R1) examples include compounds having two or more polymerizable functional groups in the molecule, such as aryl (meth) acrylate, divinylbenzene, diaryl phthalate, and the like. Usable crosslinking monomers such as ethylene glycol di (meth) acrylate.
- the crosslinkable monomer is used as needed, but the amount of the crosslinkable monomer used is preferably in the range of 0 to 3% by weight, more preferably 0 to 1.5% by weight. is there. If the amount of the crosslinkable monomer exceeds 3% by weight, the impact resistance of the molded article tends to be impaired.
- Examples of the chain transfer agent used for the gen-based rubber (R 1) include ordinary chain transfer agents such as n-dodecyl mercaptan and t-dodecyl mercaptan.
- the chain transfer agent is used as needed, but is preferably used in the range of 0 to 3% by weight, more preferably 0 to 1.5% by weight, and more than 3% by weight. And the impact resistance of the molded article tends to be impaired.
- the gen-based rubber (R 1) obtained as described above is enlarged using an acid group-containing copolymer (S) latex of a specific composition focused on the refractive index to obtain a large particle diameter.
- S acid group-containing copolymer
- R 2 gen-based hypertrophy rubber
- composition of the general acid group-containing copolymer used for the above purpose and the method of enlarging the same for example, JP-A-56-166217, JP-A-58-61102, JP-A-8-59704 And JP-A-8-157502, JP-A-60-118734, JP-A-2002-20566, and the like.
- the acid group-containing copolymer (S) latex used in the graft copolymer (A) of the present invention is at least one selected from the group consisting of acrylic acid, methacrylic acid, itaconic acid and crotonic acid.
- an aromatic vinyl monomer-mer 10-70 wt% an alkyl least one ⁇ acrylic acid number of carbon atoms in the alkyl group is from 1 to 12 5 to 30 weight 0/0
- the alkyl group has at least 1 to 12 carbon atoms Polymerizes a monomer mixture consisting of 0 to 20% by weight of one type of alkyl methacrylate and 0 to 20% by weight of a vinyl monomer copolymerizable therewith (total of 100% by weight). It is made to let.
- the unsaturated acid used in the acid group-containing copolymer (S) acrylic acid, methacrylic acid or a mixture thereof is preferable from a practical viewpoint.
- the amount of the unsaturated acid used is 5 to 25% by weight, preferably 10 to 20% by weight. If the amount of unsaturated acid used is less than 5% by weight, the swelling capacity tends to be poor, and if it exceeds 25% by weight, coagulum formation and latex thickening tend to occur. Not suitable.
- the aromatic vinyl monomer used in the acid group-containing copolymer (S) includes, for example, styrene, vinylinoletoluene, ⁇ -methinolestyrene, vinylinolephthalene, or a chlorine group, bromine group, or alkyl group thereof. And aromatic nucleus-substituted products such as a group, a mercapto group, an amino group, a sulfonic acid group, and a hydroxy group.
- the amount of the aromatic butyl monomer used is preferably from 10 to 70% by weight, more preferably from 20 to 65% by weight, and still more preferably from 30 to 60% by weight.
- the amount of the aromatic vinyl monomer used is less than 10% by weight, the refractive index of the obtained acid group-containing copolymer (S) decreases, and the enlarged rubber (R 2) obtained by using the same is used. Further, the transparency of the graft copolymer (II) is adversely affected, and the practicality tends to be reduced. On the other hand, when the content exceeds 70% by weight, the resulting acid group-containing copolymer (S) tends to have a reduced ability to enlarge.
- the acrylic acid used in the acid group-containing copolymer (S) is an acrylate in which the alkyl group has 1 to 12 carbon atoms.
- the alkyl group has 1 to 12 carbon atoms.
- an alkyl group having 1 to 8 carbon atoms is preferable. These can be used alone or in combination of two or more. If the alkyl group has more than 12 carbon atoms, the polymerization rate tends to decrease, and a large amount of time tends to be required for adjustment.
- the amount of the alkyl acrylate used is 5 to 30% by weight, preferably 15 to 30% by weight.
- the amount of the alkyl acrylate is less than 5% by weight, the swelling ability tends to decrease, and if it exceeds 30% by weight, the coagulate during the production of the acid group-containing copolymer (S) latex tends to increase. There is.
- the methacrylic acid used in the acid group-containing copolymer (S) has a carbon atom of the alkyl group. It is an alkyl methacrylate having a number of 1 to 12, and specific examples include methyl methacrylate, ethyl methacrylate, propyl methacrylate, and butyl methacrylate. In particular, an alkyl group having 1 to 8 carbon atoms is preferable. These can be used alone or in combination of two or more. If the alkyl group has more than 12 carbon atoms, the polymerization rate tends to decrease, and a large amount of time tends to be required for adjustment.
- the amount of the alkyl methacrylate used is 0 to 20% by weight, preferably 0 to 15% by weight. If the amount of the alkyl methacrylate used is outside this range, the resulting acid group-containing copolymer (S) will have a reduced refractive index. The transparency of the polymer (A) tends to decrease.
- Examples of the other monomer units copolymerizable with the acid group-containing copolymer (S) include vinyl cyanide monomers such as acrylonitrile and methacrylonitrile, aryl methacrylate, and polyethylene glycol dimethacrylate. Etc. in the molecule
- a crosslinkable monomer having two or more polymerizable functional groups is exemplified. These are used alone or in combination of two or more.
- the amount of these other copolymerizable vinyl monomers to be used is 0 to 20% by weight, preferably 0 to 10% by weight. If the amount of the other copolymerizable vinyl monomer exceeds 20% by weight, the enlargement ability tends to decrease and the transparency tends to be adversely affected.
- a chain transfer agent such as n-dodecyl mercaptan or t-dodecyl mercaptan is used in an amount of 0 to 3 weight as required. / 0 can be used.
- the acid group-containing copolymer (S) latex may have a non-uniform composition instead of a uniform composition for the purpose of improving the ability of the unsaturated acid to enlarge. That is, the acid group-containing copolymer (S) is obtained by first polymerizing a monomer mixture (si) having a lower unsaturated acid content than that of a homogeneous composition or containing no unsaturated acid. Subsequently, the copolymer having a multilayer structure, which is obtained by polymerizing the monomer mixture (s 2) having a higher composition than the value when the content of the unsaturated acid is a uniform composition as an outer layer, is more preferable. preferable.
- the volume average particle diameter of the acid group-containing copolymer (S) latex is not particularly limited, but is preferably in the range of 600 to 300 A, more preferably 800 to 200 A.
- the volume average particle diameter of the acid group-containing copolymer (S) latex is less than 60 OA, the enlargement capacity tends to be insufficient.
- it is more than 300 OA the polymerization stability tends to be reduced at the time of enlargement, and the polymerization scale tends to be easily generated, and the industrial practicality is reduced.
- the enlarged rubber particles (R2) in the graft copolymer (A) of the present invention are coagulated and enlarged by adding the acid group-containing copolymer (a2) latex to the gen-based rubber (R1). It is obtained.
- the amount of the acid group-containing copolymer (S) latex to be used is preferably 0.1 to 15 parts by weight (as a solid content) with respect to 100 parts by weight of the gen-based rubber (R1). 5 to 6 parts by weight are more preferred. If the amount of the acid group-containing copolymer (S) latex is less than 0.1 part by weight, the amount of the unexpanded gen-based rubber (R 1) increases, and it is sufficiently enlarged to the desired average particle diameter.
- the volume average particle diameter of the enlarged rubber particles (R 2) of the present invention is preferably from 1900 to 2000 OA, and from 190 to 0000 A in order to sufficiently retain the effect of imparting impact strength to the final molded article. Is more preferable, and 2500 to 8000 A is further preferable. If the volume average particle diameter of the expanded rubber particles (R 2) is less than 190 OA, the effect of imparting impact resistance tends to be poor. If it exceeds 20000 A, the polymerization stability tends to decrease, and industrial production becomes difficult, and the transparency of the molded article tends to deteriorate.
- the graft copolymer (A) used in the present invention can be obtained by polymerizing a monomer mixture (GM) shown below in the presence of the gen-based enlarged rubber particles (R 2). At that time, methacrylic acid was added in the presence of 40 to 85 parts by weight of gen-based enlarged rubber particles (R 2) having an average volume particle diameter of 1900 to 20,000 A and enlarged using an acid group-containing copolymer (S) latex.
- GM monomer mixture
- S acid group-containing copolymer
- a monomer mixture (GM) consisting of 60 to 15 parts by weight [100 parts by weight of the gen-based enlarged rubber (R2) and the monomer mixture (GM) in total] is polymerized.
- the aromatic vinyl monomer used in the monomer mixture (GM) include, for example, styrene, butyltoluene, ⁇ -methylstyrene, and the like.
- the body include acrylonitrile and metathalilonitrile.
- Other vinyl monomers copolymerizable therewith include acrylate monomers, such as methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, and the like. There is. These can be used alone or in combination of two or more.
- the difference between the refractive index of the obtained graft copolymer (A) and the refractive index of the target aromatic vinyl, alkyl methacrylate or cyanuric butyl resin composition (B) is 0.0. It is preferably set to 2 or less, more preferably 0.01 or less, and still more preferably 0.005 or less. If the difference between the refractive indices of (A) and (B) exceeds 0.02, only poor transparency can be obtained.
- the difference between the refractive index of the obtained graft copolymer (A) and the refractive index of the obtained acid group-containing copolymer (S) is not more than 0.02, preferably not more than 0.01. More preferably, it is desirably 0.05 or less.
- the difference in the refractive index between (A) and (S) exceeds 0.02, the transparency tends to be poor.
- the amount of the acid group-containing copolymer used is small, so that the graft copolymer is refracted with the acid group-containing copolymer (S).
- the present inventors focused on the difference in refractive index from the acid group-containing copolymer (S) and devised the composition of the monomer mixture of the acid group-containing copolymer (S). As a result, it has become possible to greatly improve the transparency of the molded body.
- thermoplastic resin serving as the matrix resin in the resin composition of the present invention is a group consisting of an aromatic vinyl monomer, an alkyl methacrylate monomer and a vinyl cyanide monomer. And at least one monomer selected from the group consisting of 75 to 100% by weight and a copolymer obtained by polymerizing 0 to 25% by weight of a vinyl monomer copolymerizable therewith.
- aromatic vinyl monomer used in the copolymer (B) of the present invention include styrene, vinyl toluene, and ⁇ -methylstyrene.
- the amount of the aromatic butyl monomer used is more preferably from 20 to 90% by weight, and even more preferably from 30 to 80% by weight. When the amount of the aromatic vinyl monomer exceeds 90% by weight, The transparency and impact resistance of the molded article tend to decrease. On the other hand, if it is less than 20% by weight, the transparency of the molded article tends to deteriorate.
- alkyl methacrylate monomer used in the copolymer (B) of the present invention examples include, for example, methyl methacrylate, ethyl methacrylate, propyl methacrylate, butyl methacrylate, and the like. Acrylonitrile, methacrylonitrile and the like can be mentioned. These can be used alone or in combination of two or more.
- the amount of the at least one monomer selected from the group consisting of alkyl methacrylate and butyl cyanide is preferably 10 to 80% by weight, more preferably 20 to 70% by weight. .
- Examples of other vinyl monomers copolymerizable with those used in the copolymer (B) of the present invention include acrylate monomers, such as methyl acrylate, ethyl acrylate, and acrylate Propyl, butyl acrylate and 2-ethylhexyl acrylate.
- the proportion of these used is 0 to 25% by weight, preferably 0 to 15% by weight.
- the copolymer (B) in the present invention may be a mixture of two or more polymers or a copolymer as long as the overall composition satisfies the above range.
- the copolymer (B) may be, for example, a mixture of an aromatic vinyl monocyanide copolymer and an alkyl methacrylate-based polymer. In this case, it is needless to say that it is desirable that the compatibility of the two or more polymers or copolymers is good enough not to hinder the performance as a transparent resin.
- the copolymer (B) in the present invention may contain a small amount of a rubber component, if necessary.
- a rubber component at least one monomer selected from the group consisting of an alkyl acrylate monomer, a gen monomer and an olefin monomer can be used.
- the gen-based monomer include various butadiene-substituted products such as butadiene, isoprene, and chloroprene.
- Representative examples of the olefin monomer include ethylene, propylene, 1-butene, isobutylene and the like. These can be used alone or in appropriate combination.
- a monomer mixture that is a non-rubber component such as an aromatic vinyl monomer, an alkyl (meth) acrylate monomer, or a cyanated butyl monomer is used.
- a monomer mixture that is a non-rubber component such as an aromatic vinyl monomer, an alkyl (meth) acrylate monomer, or a cyanated butyl monomer is used.
- Polymerization may be used.
- the content ratio of the rubber component is 30% by weight or less, more preferably 25% by weight, assuming that the whole copolymer (B) is 100% by weight. %, More preferably 20% by weight or less. If the content of the rubber component exceeds 30% by weight, the rigidity, heat resistance and transparency of the molded article tend to be reduced.
- a known method can be used as a method for incorporating the rubber component into the thermoplastic copolymer (B).
- a method of polymerizing a monomer mixture (B) that is a non-rubber component in the presence of a polymer composed of a rubber component monomer to obtain a rubber-component-containing thermoplastic copolymer a method using a liquid rubber or a non-rubber component, A method in which a crosslinkable bulk rubber is dissolved in a monomer mixture of a matrix resin to perform bulk polymerization or solution polymerization, a thermoplastic copolymer (B) composed of a monomer that is a non-rubber component, and a rubber component alone
- a method of blending a polymer consisting of a polymer or a block containing the same, a random or graft copolymer, or the like can be used.
- the impact-resistant thermoplastic resin composition of the present invention comprises 5 to 40 parts by weight of the graft copolymer (A) and 95 to 60 parts by weight of the copolymer (B) [(A) and (A). B) 100 parts by weight in total). If the blending amount of the graft copolymer (A) is less than 5 parts by weight, the impact resistance of the final product tends to be insufficient, and if it exceeds 40 parts by weight, the rigidity and heat resistance tend to decrease. is there. At this time, one or more known additives such as stabilizers, lubricants, pigments, plasticizers, antistatic agents, anti-fogging agents, release agents, and fillers are used in combination with aromatic vulcanizates.
- additives such as stabilizers, lubricants, pigments, plasticizers, antistatic agents, anti-fogging agents, release agents, and fillers are used in combination with aromatic vulcanizates.
- a molded article can be produced by extrusion molding, injection molding, or the like using the melt-kneaded product obtained in this manner.
- Example 2 The pellets obtained under the conditions described in Example 1 were injection-molded at a barrel temperature of 240 ° C. using an injection molding machine (160MS P10 type, manufactured by Mitsubishi Heavy Industries, Ltd.) to obtain an injection-molded body (1 2 7mmX 12.7mmX6.4mm) was obtained. After cutting both ends of this growth body to obtain a test specimen of 63.5 mm X 12.7 mm X 6.4 mm dimensions, using a test specimen obtained by notching with a notching machine, Izod impact strength was measured at 23 ° C according to ASTM D-256.
- 160MS P10 type manufactured by Mitsubishi Heavy Industries, Ltd.
- the pellets obtained under the conditions described in Example 1 were injection-molded using an injection molding machine (Mitsubishi Heavy Industries, Ltd., 160MS P10 type) at a barrel temperature of 240 ° C. OmmX 10 OmmX 3 mm).
- the haze value of the obtained flat plate for measurement was measured using a turbidity meter (Nippon Denshoku Industries Co., Ltd., Model 80) according to JIS K6714.
- styrene 0.3 parts by weight of sodium formaldehyde sulfoxylate, 0.0025 parts by weight of ferrous sulfate and 0.011 parts by weight of ethylenediaminetetraacetic acid are added, and after a few minutes, 3 parts by weight of butyl methacrylate and 9 parts by weight of butyl acrylate Of styrene, 12 parts by weight of styrene, 0.125 parts by weight of t-dodecylmercaptan, and 0.025 parts by weight of peroxide at the mouth of cumenehydride were continuously added dropwise at a rate of 20 parts by weight / hour using a metering pump.
- a mixture of 8 parts by weight and 13.5 parts by weight of styrene in 30 parts by weight of t-butyl hydroperoxide 0.2 parts by weight of the side was added, and the mixture was continuously dropped into the polymerization machine at a rate of 10 parts by weight using a metering pump.
- 0.2 parts by weight of sodium octylsulfosuccinate was added to the polymerization machine three times every hour in order to maintain the stability of the latex.
- the mixture was further stirred for 1 hour to complete the polymerization.
- the polymerization conversion was 96% and the volume average particle diameter of latex was 6400A.
- DLTP dilauryl-1,3'-thiodipropionate
- BHT 2,6-di-t-butyl-14-methylphenol
- An acryl-aromatic vinyl resin comprising methyl methacrylate and styrene was obtained by suspension polymerization as follows. 200 parts by weight of water, 0.02 parts by weight of sodium dodecylbenzenesulfonate and 1 part by weight of calcium phosphate are put into a 100-liter polymerization machine, and the mixture is thoroughly purged with nitrogen under stirring to remove oxygen, and then heated to 60 ° C The temperature was raised, and 55 parts by weight of methyl methacrylate, 45 parts by weight of styrene, and 0.8 parts by weight of benzoyl peroxide were added all at once, followed by stirring for 5 hours to complete the reaction. It was further dehydrated and dried to obtain an Atari-ru aromatic aromatic resin. The refractive index was 1.535.
- Example 2 Except for the preparation of the enlarged butadiene-styrene rubber in Example 1, except that the amount of the acid group-containing copolymer latex was changed from 2.0 parts by weight to 3.5 parts by weight (as the solid content). A resin composition was obtained in the same manner as in Example 1. The volume average particle diameter of the obtained enlarged rubber latex is 300 OA, and the volume average particle diameter of the graft copolymer latex is 3500 A. The results of the physical property evaluation are shown in Table 1 as Example 2.
- a copolymer resin composed of styrene and acrylonitrile was obtained by suspension polymerization as follows. Into a 8 liter polymerization machine, add 200 parts by weight of water, 0.02 parts by weight of sodium dodecylbenzenesulfonate, and 1 part by weight of calcium phosphate, perform sufficient nitrogen replacement with stirring to remove oxygen, and then raise the temperature to 85 ° C. After raising the temperature, 75 parts by weight of styrene, 25 parts by weight of atalylonitrile, and 0.8 parts by weight of benzoyl peroxide were added all at once, and after stirring for 5 hours, 0.8 parts by weight of benzoyl peroxide was added. The reaction was further stirred for 5 hours to complete the reaction. Further, it was dehydrated and dried to obtain a styrene-acrylonitrile copolymer resin. The refractive index was 1.57.
- a methyl methacrylate polymer resin was obtained by suspension polymerization as follows. Add 250 parts by weight of water, 0.02 parts by weight of sodium dodecylbenzenesulfonate, and 1 part by weight of calcium phosphate to an 8 liter polymerization machine, perform sufficient nitrogen replacement with stirring to remove oxygen, and then raise the temperature to 60 ° C. Then, 96 parts by weight of methyl methacrylate, 4 parts by weight of methyl acrylate, 0.1 part by weight of n-dodecylmercaptan, and 0.3 part by weight of benzoyl peroxide were added all at once and stirred for 5 hours to complete the reaction. Was. Further, it was dehydrated and dried to obtain a methyl methacrylate polymer resin. The refractive index was 1.489.
- Example 3 The matrix copolymer of Example 1 was combined with the styrene-acrylonitrile copolymer resin obtained in (1) 39.7 parts by weight and the methyl methacrylate copolymer resin obtained in (2) 35. A resin composition was obtained in the same manner as in Example 1 except that the amount was changed to 3 parts by weight (the refractive index of the entire matrix was 1.532). The results of the physical property evaluation are shown in Table 1 as Example 3.
- Example 1 In the polymerization of the acid group-containing copolymer latex in Example 1, the amount of sodium dioctyl sulfosuccinate added initially was changed from 0.5 parts by weight to 3.0 parts by weight. In the same manner as in the above, a resin composition was obtained.
- the polymerization conversion of the obtained acid group-containing copolymer latetus was 99.7%
- the volume average particle diameter was 490 A
- the concentration was 33%
- the pH was 2.8
- the refractive index was 1.532.
- the average particle diameter of the obtained enlarged rubber was 1,730 A
- the average particle diameter of the obtained graft copolymer was 1,880 A
- the refractive index was 1.534.
- Table 1 Comparative Example 2 and Comparative Example 2.
- Example 1 the acid-containing copolymer latex was not added, A resin composition was obtained in the same manner as in the example, except that a graft copolymer was obtained using styrene-styrene rubber.
- the polymerization conversion of the graft copolymer was 96%, the volume average particle diameter of the latex was 180 A, and the refractive index was 1.534.
- the physical property evaluation results are shown in Table 1 as Comparative Example 3.
- the resin composition of the present invention has high impact resistance and excellent transparency. Industrial applicability
- the impact-resistant thermoplastic resin composition of the present invention can be used to produce various molded articles by extrusion molding, injection molding, or the like using the melt-kneaded material, and strength and transparency are required as a field of application. It is suitable for molded articles such as lighting covers, various transparent containers, and medical instruments.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Graft Or Block Polymers (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
Claims
Priority Applications (6)
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CA002500292A CA2500292A1 (en) | 2002-10-01 | 2003-09-22 | Transparent and impact-resistant thermoplastic resin composition |
JP2004541235A JP4688496B2 (ja) | 2002-10-01 | 2003-09-22 | 透明・耐衝撃性熱可塑性樹脂組成物 |
EP03799122A EP1548061B1 (en) | 2002-10-01 | 2003-09-22 | Transparent and impact-resistant thermoplastic resin composition |
AU2003264555A AU2003264555A1 (en) | 2002-10-01 | 2003-09-22 | Transparent and impact-resistant thermoplastic resin composition |
DE60328614T DE60328614D1 (de) | 2002-10-01 | 2003-09-22 | Transparente und schlagzähe thermoplast harzzusammensetzung |
US11/090,653 US7396876B2 (en) | 2002-10-01 | 2005-03-25 | Transparent and impact-resistant thermoplastic resin compositions |
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JP2002288449 | 2002-10-01 | ||
JP2002-288449 | 2002-10-01 |
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US11/090,653 Continuation-In-Part US7396876B2 (en) | 2002-10-01 | 2005-03-25 | Transparent and impact-resistant thermoplastic resin compositions |
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WO2004031295A1 true WO2004031295A1 (ja) | 2004-04-15 |
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PCT/JP2003/012114 WO2004031295A1 (ja) | 2002-10-01 | 2003-09-22 | 透明・耐衝撃性熱可塑性樹脂組成物 |
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US (1) | US7396876B2 (ja) |
EP (1) | EP1548061B1 (ja) |
JP (1) | JP4688496B2 (ja) |
KR (1) | KR20050062552A (ja) |
CN (1) | CN1326933C (ja) |
AU (1) | AU2003264555A1 (ja) |
CA (1) | CA2500292A1 (ja) |
DE (1) | DE60328614D1 (ja) |
TW (1) | TWI283694B (ja) |
WO (1) | WO2004031295A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2006265407A (ja) * | 2005-03-24 | 2006-10-05 | Nippon A & L Kk | 表面硬度に優れる透明樹脂組成物および該樹脂組成物を成形してなる透明樹脂成形品 |
JP2007144691A (ja) * | 2005-11-25 | 2007-06-14 | Nippon A & L Kk | 射出成形品 |
JP2008075065A (ja) * | 2006-09-21 | 2008-04-03 | Lg Chem Ltd | 機械的物性に優れた光拡散性樹脂組成物 |
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CN101205274B (zh) * | 2006-12-18 | 2011-06-01 | 奇美实业股份有限公司 | 橡胶改质苯乙烯系树脂组成物 |
US8501868B2 (en) | 2010-03-26 | 2013-08-06 | Styrolution GmbH | Thermoplastic molding compositions with improved optical properties |
TWI449740B (zh) * | 2011-09-02 | 2014-08-21 | Chi Mei Corp | Rubber modified styrene resin and molded article produced therefrom |
BR112020001284B1 (pt) * | 2017-07-21 | 2023-05-09 | Rohm And Haas Company | Composição de resina de poli(metacrilato de metila), e, artigo de fabricação compreendendo uma composição de resina de poli(metacrilato de metila) |
WO2020050639A1 (ko) * | 2018-09-05 | 2020-03-12 | 주식회사 엘지화학 | 열가소성 수지 조성물 |
KR102288853B1 (ko) | 2018-09-05 | 2021-08-12 | 주식회사 엘지화학 | 열가소성 수지 조성물 |
WO2021235676A1 (ko) * | 2020-05-21 | 2021-11-25 | 주식회사 엘지화학 | 열가소성 수지 조성물 |
WO2022085913A1 (ko) * | 2020-10-23 | 2022-04-28 | (주) 엘지화학 | 비닐시안 화합물-공액디엔 고무-방향족 비닐 화합물 그라프트 공중합체의 제조방법 및 이를 포함하는 열가소성 수지 조성물의 제조방법 |
KR102673191B1 (ko) * | 2020-10-23 | 2024-06-10 | 주식회사 엘지화학 | 비닐시안 화합물-공액디엔 고무-방향족 비닐 화합물 그라프트 공중합체의 제조방법 및 이를 포함하는 열가소성 수지 조성물의 제조방법 |
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- 2003-09-22 CA CA002500292A patent/CA2500292A1/en not_active Abandoned
- 2003-09-22 EP EP03799122A patent/EP1548061B1/en not_active Expired - Lifetime
- 2003-09-22 DE DE60328614T patent/DE60328614D1/de not_active Expired - Lifetime
- 2003-09-22 WO PCT/JP2003/012114 patent/WO2004031295A1/ja active Application Filing
- 2003-09-22 CN CNB038236354A patent/CN1326933C/zh not_active Expired - Fee Related
- 2003-09-22 JP JP2004541235A patent/JP4688496B2/ja not_active Expired - Fee Related
- 2003-09-22 KR KR1020057004784A patent/KR20050062552A/ko active IP Right Grant
- 2003-09-22 AU AU2003264555A patent/AU2003264555A1/en not_active Abandoned
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JP2007144691A (ja) * | 2005-11-25 | 2007-06-14 | Nippon A & L Kk | 射出成形品 |
JP2008075065A (ja) * | 2006-09-21 | 2008-04-03 | Lg Chem Ltd | 機械的物性に優れた光拡散性樹脂組成物 |
Also Published As
Publication number | Publication date |
---|---|
EP1548061A1 (en) | 2005-06-29 |
CN1326933C (zh) | 2007-07-18 |
US7396876B2 (en) | 2008-07-08 |
KR20050062552A (ko) | 2005-06-23 |
JP4688496B2 (ja) | 2011-05-25 |
TWI283694B (en) | 2007-07-11 |
JPWO2004031295A1 (ja) | 2006-02-02 |
CA2500292A1 (en) | 2004-04-15 |
EP1548061B1 (en) | 2009-07-29 |
TW200418917A (en) | 2004-10-01 |
DE60328614D1 (de) | 2009-09-10 |
CN1688655A (zh) | 2005-10-26 |
AU2003264555A1 (en) | 2004-04-23 |
EP1548061A4 (en) | 2006-05-10 |
US20050234192A1 (en) | 2005-10-20 |
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