Abstract Am impact modifier comprising a blend of 100 parts by weight of a graft copolymer (A) obtained by graft-polymerizing in a single or more stages a monomer or monomer mixture consisting of 95 to 100% by weight of at least one monomer selected from the group consisting of alkyl acrylates, alkyl methacrylates, aromatic vinyl compounds and vinyl cyanide compounds and 0 to 5% by weight of a polyfunctional crosslinking agent on an acrylic elastomer mainly composed of an alkyl acrylate and containing 0.1 to 5% by weight of a polyfunctional crosslinking agent and/or a butadiene elastomer composed of a polybutadiene or a copolymer of 50% by weight or more of a butadiene and 50% by weight or less of other vinyl compound copolymerizable therewith and containing 0 to 5% by weight of a polyfunctional crosslinking agent, and 0.1 to 20 parts by weight of a copolymer (B) obtained by copolymerizing 3 to 30% by weight of an unsaturated acid monomer and 97 to 70% by weight of a vinyl monomer copolymerizable therewith, and a thermoplastic resin composition having high impact resistance and excellent moldability and workability comprising 3 to 50 parts by weight of the modifier set forth above and 100 parts of weight of a thermoplastic resin.
Inventors
👤 Kazumasa Kamata
👤 Kazuo Ueda
👤 Kiyokazu Kitai
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-07 13:49
CPC Classifications
C; C08; C08L; C08L51/00; C08L101/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
186 words
An impact modifier comprising a blend of 100 parts by weight of a graft copolymer (A) obtained by graft-polymerizing a monomer or a monomer mixture consisting of 95 to 100% by weight of at least one monomer selected from the group consisting of alkyl acrylates, alkyl methacrylates, aromatic vinyl compounds and vinyl cyanide compounds and 0 to 5% by weight of a polyfunctional crosslinking agent on an acrylic elastomer mainly composed of an alkyl acrylate and containing 0.1 to 5% by weight of polyfunctional crosslinking agent, a butadiene elastomer composed of a polybutadiene or a copolymer of 50% by weight or more of a butadiene and 50% by weight or less of other vinyl compound copolymerizable therewith and containing 0 to 5% by weight of a polyfunctional crosslinking agent, or mixtures thereof, and 0.1 to 20 parts by weight of a copolymer (B) obtained by copolymerizing 3 to 30% by weight of an unsaturated acid monomer and 97 to 70% by weight of vinyl monomer copolymerizable therewith selected from the group consisting of alkyl acrylates, alkyl methacrylate, aromatic vinyl compounds, vinyl cyanide compounds and mixtures thereof.
Claim 2
Dependent Claim
186 words
An impact modifier comprising a blend of 100 parts by weight of a graft copolymer (A) obtained by graft-polymerizing a monomer or a monomer mixture consisting of 95 to 100% by weight of at least one monomer selected from the group consisting of alkyl acrylates, alkyl methacrylates, aromatic vinyl compounds and vinyl cyanide compounds and 0 to 5% by weight of a polyfunctional crosslinking agent on an acrylic elastomer mainly composed of an alkyl acrylate and containing 0.1 to 5% by weight of polyfunctional crosslinking agent, a butadiene elastomer composed of a polybutadiene or a copolymer of 50% by weight or more of a butadiene and 50% by weight or less of other vinyl compound copolymerizable therewith and containing 0 to 5% by weight of a polyfunctional crosslinking agent, or mixtures thereof, and 0.1 to 20 parts by weight of a copolymer (B) obtained by copolymerizing 3 to 30% by weight of an unsaturated acid monomer and 97 to 70% by weight of vinyl monomer copolymerizable therewith selected from the group consisting of alkyl acrylates, alkyl methacrylate, aromatic vinyl compounds, vinyl cyanide compounds and mixtures thereof.
Claim 3
Dependent Claim
42 words
An impact modifier according to claim 1, wherein graft copolymer (A) is obtained by graft-polymerizing 25 to 125 parts by weight of the monomer or the monomer mixture on 100 parts by weight of the acrylic elastomer in one or more stages.
Claim 4
Dependent Claim
61 words
An impact modifier according to claim 2, wherein the elastomer in the graft copolymer (A) is the acrylic elastomer composed of 50 to 100% by weight of an alkyl acrylate and 0 to 50% by weight of another vinyl compound copolymerizable therewith and containing 0.1 to 5% by weight of the polyfunctional crosslinking agent having a plurality of addition polymerizable groups.
Claim 5
Dependent Claim
67 words
An impact modifier according to claim 2, wherein the elastomer in the graft copolymer (A) is the butadiene elastomer composed of a polybutadiene or a copolymer of 50 to 100% by weight of a butadiene and 0 to 50% by weight of another vinyl compound copolymerizable therewith and containing 0 to 5% by weight of the polyfunctional crosslinking agent having a plurality of addition polymerizable unsaturated groups.