Patent EP0357036A2 successfully refreshed from Google Patents.
EP0357036A2
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EP
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Preparation method of comb copolymer, acrylic comb copolymer, and impact resistant resin composition
Assignee: Mitsubishi Chemical Corp
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Filing: 1989-08-30
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Granted: —
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Expires: 2009-08-30
Abstract
Abstract A comb copolymer consisting of a methacrylic macromonomer as a branch ingredient and acrylic ester as a backbone ingredient and being suitable for an acrylic elastomer material which is excellent in transparency, weatherability and mechanical strenth; an impact resistant acrylic resin composition obtained by blending the above comb copolymer with a PMMA (co)polymer; and a comb copolymer similarly consisting of a methacrylic macromonomer as a branch component and acrylic ester as a backbone component and being an acrylic resin which is excellent in transparency, weatherability, gloss and light resistance, are disclosed in this invention. Preparation methods of the high molecular weight comb compolymers useful for molding materials comprising the above mentioned comb copolymers are disclosed. The disclosed preparation methods comprise, in the copolymerization of the macromonomer having a vinyl group at one end of the main chain with a vinyl monomer, conducting aqueous suspension polymerization of the monomer mixture in the presence of an initiator in a solvent which is a good solvent for the macromonomer and has a solubility of 10% by weight or more in water at 30°C, or conducting aqueous suspension poly merization of the monomer mixture in the presence of an initiator in a halogenated hydrocarbon solvent which is a good solvent for the macromonomer and has an azeotropic point with water raning from 30 to 90°C at a temperature above said azeotropic point.
Inventors
- 👤 Seiji Tone
- 👤 Haruko Takeda
- 👤 Masahiro Sugimori
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 19:30
CPC Classifications
C; C08; C08L; C08L33/00; C08L33/04; C08L33/06; C08L33/10; C08L33/12; C08F; C08F265/00; C08F265/04; C08F265/06; C08F290/00; C08F290/02; C08F290/04; C08F290/046; C08L51/00
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
75 words
A preparation method of a comb copolymer comprising mixing a polymer having a vinyl group at one end of the main chain and having a number average molecular weight of 3,000 to 50,000 with a vinyl monomer and a polymerization initiator in a solvent which is a good solvent for said polymer and has a solubility in water of 10% by weight or more at 30°C, and subjecting the resultant mixture to aqueous suspension polymerization.
Claim 2
Dependent Claim
75 words
A preparation method of a comb copolymer comprising mixing a polymer having a vinyl group at one end of the main chain and having a number average molecular weight of 3,000 to 50,000 with a vinyl monomer and a polymerization initiator in a solvent which is a good solvent for said polymer and has a solubility in water of 10% by weight or more at 30°C, and subjecting the resultant mixture to aqueous suspension polymerization.
Claim 3
Dependent Claim
22 words
The preparation method of claim 1 wherein the weight ratio of said polymer to said vinyl monomer ranges from 95/5 to 10/90.
Claim 4
Dependent Claim
29 words
The preparation method of claim 1 wherein said solvent is used in an amount from 30 to 300 parts by weight per 100 parts by weight of said polymer.
Claim 5
Dependent Claim
38 words
The preparation method of claim 1 wherein the weight ratio of the total monomer amount consisting of said polymer and said vinyl monomer to the amount of water in the aqueous suspension polymerization ranges from 1/1.5 to 1/6.
Claim 6
Dependent Claim
87 words
A preparation method of a comb copolymer comprising mixing a polymer having a vinyl group at one end of the main chain and having a number average molecular weight of 3,000 to 50,000 with a vinyl monomer and a polymerization intiator in a halogenated hydrocarbon solvent which is a good solvent for said polymer and has an azeotropic point with water ranging from 30 to 90°C, and subjecting the resultant mixture to aqueous suspension polymerization at a temperature above the azeotropic point of said solvent with water.
Claim 7
Dependent Claim
87 words
A preparation method of a comb copolymer comprising mixing a polymer having a vinyl group at one end of the main chain and having a number average molecular weight of 3,000 to 50,000 with a vinyl monomer and a polymerization intiator in a halogenated hydrocarbon solvent which is a good solvent for said polymer and has an azeotropic point with water ranging from 30 to 90°C, and subjecting the resultant mixture to aqueous suspension polymerization at a temperature above the azeotropic point of said solvent with water.
Claim 8
Dependent Claim
22 words
The preparation method of claim 5 wherein said halogenated hydrocarbon solvent has an azeotropic point with water ranging from 30 to 80°C.
Claim 9
Dependent Claim
15 words
The preparation method of claim 5 wherein said halogenated hydrocarbon solvent is chloroform or 1,2-dichloroethane.
Claim 10
Dependent Claim
22 words
The preparation method of claim 5 wherein the weight ratio of said polymer to the vinyl monomer ranges from 95/5 to 10/90.
Claim 11
Dependent Claim
29 words
The preparation method of claim 5 wherein said solvent is used in an amount from 30 to 300 parts by weight per 100 parts by weight of said polymer.
Claim 12
Dependent Claim
38 words
The preparation method of claim 5 wherein the weight ratio of the total monomer amount consisting of said polymer and said vinyl monomer to the amount of water in the aqueous suspension polymerization ranges from 1/1.5 to 1/6.
Claim 13
Dependent Claim
97 words
An acrylic comb copolymer which is prepared by copolymerizing 20 to 60 parts by weight of a methacrylic macromonomer having a vinyl group at one end of the main chain, a number average molecular weight of 3,000 to 50,000 and a glass transition temperature of 40°C or more, with 80 to 40 parts by weight of an acrylic ester having a glass transition temperature of the homopolymer of 0°C or less, which copolymer has a molecular weight corresponding to the peak top of the molecular weight distrinbution curve measured by the GPC method of 50,000 or more.
Claim 14
Dependent Claim
97 words
An acrylic comb copolymer which is prepared by copolymerizing 20 to 60 parts by weight of a methacrylic macromonomer having a vinyl group at one end of the main chain, a number average molecular weight of 3,000 to 50,000 and a glass transition temperature of 40°C or more, with 80 to 40 parts by weight of an acrylic ester having a glass transition temperature of the homopolymer of 0°C or less, which copolymer has a molecular weight corresponding to the peak top of the molecular weight distrinbution curve measured by the GPC method of 50,000 or more.
Claim 15
Dependent Claim
34 words
An acrylic resin composition having excellent impact resistance comprising blending 5 to 50 parts by weight of said acrylic comb copolymer of claim 11 with 100 parts by weight of a methyl methacrylate (co)polymer.
Claim 16
Dependent Claim
103 words
An impact resistant acrylic resin comprising an acrylic comb copolymer which is prepared by copolymering 60 to 90 parts by weight of a methacrylic macromonomer having a vinyl group at one end of the main chain, a number average molecular weight of 3,000 to 50,000 and a glass transition temperature of 40°C or more, with 40 to 10 parts by weight of an acrylic ester having a glass transition temperature of the homopolymer of 0°C or less, which copolymer has a molecular weight corresponding to the peak top of the molecular weight distribution curve measured by the GPC method of 50,000 or more.
Claim 17
Dependent Claim
103 words
An impact resistant acrylic resin comprising an acrylic comb copolymer which is prepared by copolymering 60 to 90 parts by weight of a methacrylic macromonomer having a vinyl group at one end of the main chain, a number average molecular weight of 3,000 to 50,000 and a glass transition temperature of 40°C or more, with 40 to 10 parts by weight of an acrylic ester having a glass transition temperature of the homopolymer of 0°C or less, which copolymer has a molecular weight corresponding to the peak top of the molecular weight distribution curve measured by the GPC method of 50,000 or more.
References Cited (Backward Citations)
No citation records indexed.
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