GRAFT COPOLYMER, AND NONGLOSSY THERMOPLASTIC RESIN MOLDING CONTAINING THIS COPOLYMER AND HAVING WEATHER RESISTANCE AND LOW-TEMPERATURE TOUGHNESS

    公开(公告)号:JPH07216035A

    公开(公告)日:1995-08-15

    申请号:JP30479294

    申请日:1994-12-08

    Applicant: BASF AG

    Abstract: The present invention relates to graft copolymers obtainable by (A) polymerisation of from 10 to 89% by weight of a mixture essentially comprising either (a1) from 70 to 99.89% by weight of a C1-C18-alkyl radical of acrylic acid, where the alkyl radical may be monosubstituted by a phenyl or phenoxy group, (a2) from 0.1 to 10% by weight of a polyfunctional monomer, (a3) from 0 to 29.89% by weight of an ethylenically unsaturated monomer carrying no acid group which is different from (a1) and (a2) and can be copolymerised therewith, and (a4) from 0.01 to 10% by weight of a copolymerisable monomer containing at least one acid group, or (a5) from 49.99 to 99.99% by weight of at least one diene, (a6) from 0 to 50% by weight of a monomer which does not carry an acid group and can be copolymerised therewith and (a7) from 0.01 to 10% by weight of a copolymerisable monomer having at least one acid group, in the presence of from 1 to 80% by weight of a crosslinked silicone rubber, and (B) polymerisation of from 10 to 89% by weight of a mixture essentially comprising (b1) from 50 to 99.99% by weight of a styrene compound of the formula (I) in which R and R , independently of one another, are hydrogen, C1-C8-alkyl or phenyl which is up to trisubstituted by C1-C4-alkyl, and/or a C1-C8-alkyl ester of methacrylic or acrylic acid, (b2) from 0 to 50% by weight of a monomer selected from the group consisting of methacrylonitrile, acrylonitrile, methacrylic acid, acrylic acid, maleic anhydride, maleimide which is N-substituted by C1-C4-alkyl, vinyl esters of aliphatic C2-C8-carboxylic acids, acrylamide and vinyl methyl ether, and (b3) from 0.01 to 20% by weight of a copolymerisable monomer containing at least one basic group, in the presence of the graft copolymer (A).

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