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    PROCESS FOR PREPARING GRAFT COPOLYMERS
    45.
    发明专利
    PROCESS FOR PREPARING GRAFT COPOLYMERS 未知

    公开(公告)号：DE2861925D1

    公开(公告)日：1982-08-19

    申请号：DE2861925

    申请日：1978-10-14

    Applicant: BASF AG

    Inventor： NAARMANN HERBERT DR ,  MC KEE GRAHAM EDMUND DR ,  SCHMITT BURGHARD DR

    IPC: C08F265/06 ,  C08F291/02

    Abstract: Graft copolymers comprising a crosslinked, saturated, elastomeric grafting base and a hard shell are prepared by incorporating thermolabile comonomers, as copolymerized units, into the grafting base during the preparation of the latter, in particular at a conversion of from 50 to 90%. During the subsequent grafting of the shell, the conditions used are such that the thermolabile comonomers incorporated as copolymerized units into the grafting base decompose into free radicals. This gives graft copolymers having improved mechanical properties, which copolymers also prove advantageous for the preparation of mixtures with other thermoplastics compatible with the graft copolymers.

    47.
    发明专利
    未知

    公开(公告)号：DE59407434D1

    公开(公告)日：1999-01-21

    申请号：DE59407434

    申请日：1994-09-09

    Applicant: BASF AG

    Inventor： FISCHER WOLFGANG DR ,  GUENTHERBERG NORBERT DR ,  MC KEE GRAHAM EDMUND DR

    IPC: C08F2/22 ,  C08F212/00 ,  C08F212/04 ,  C08F212/06 ,  C08F220/10 ,  C08F220/12 ,  C08L25/00 ,  C08F220/42 ,  C08L25/08 ,  C08L25/12 ,  C08L25/14 ,  C08L33/06 ,  C08L33/18

    Abstract: Particulate polymer A, having a mean particle size of below 1000 nm, comprising a1: up to 99.8 % by weight of at least one vinylaromatic monomer a1, a2: up to 99.8 % by weight of at least one alkyl methacrylate a2 having 1 to 8 carbon atoms in the alkyl radical, a3: up to 50 % by weight of at least one polar, copolymerisable, ethylenically unsaturated monomer a3, a4: from 0.1 to 10 % by weight of at least one polyfunctional, crosslinking monomer a4, a5: from 0.1 to 15 % by weight, preferably from 0.5 to 10 % by weight, of at least one monomer a5 containing one or more acidic, basic or epoxy groups, where the total amount of constituents a1, a2 and a3 is from 75 % by weight to 99.8 % by weight, based on A, and the total amount of a1, a2, a3, a4 and a5 is 100 % by weight, based on A.

    Thermoplastic moulding compsn. contg. thermoplastic polymer and graft co-polymer with backbone
    49.
    发明专利
    Thermoplastic moulding compsn. contg. thermoplastic polymer and graft co-polymer with backbone 未知

    公开(公告)号：DE4442168A1

    公开(公告)日：1996-05-30

    申请号：DE4442168

    申请日：1994-11-26

    Applicant: BASF AG

    Inventor： MC KEE GRAHAM EDMUND DR ,  KOCH JUERGEN DR ,  FISCHER WOLFGANG DR ,  ROSENAU BERNHARD DR ,  FOERSTER PETER

    IPC: C08L25/14 ,  C08L51/00 ,  C08L51/06 ,  C08L25/00

    Abstract: A thermoplastic moulding compsn. contains: (A) 30-90 wt. % of a thermoplastic polymer with Tg above 20 deg C; (B) 10-70% of a graft copolymer from: (b1) 30-90%, w.r.t. (B) of a graft backbone with Tg below 10 deg C, based on, (b11) 50-99.95%, w.r.t. (b1) of a 1-30C alkyl acylate, (b12) 0.49.9% of a copolymerisable, mono-unsatd. monomer, (b13) 0.01-5% of a bifunctional cross-linking monomer, and (b14) 0.05-5% of an at least trifunctional cross-linking monomer; and (b2) 10-70%, w.r.t. (B), of a casing grafted onto the graft copolymer, from (b21) 50-90% of a vinylaromatic monomer, (b22) 50-5% of (meth)acrylonitrile, a 1-20C alkyl (meth)acrylate, maleic anhydride, (meth)acrylamide and/or a vinyl alkyl ether with 1-8C in the alkyl gp., as polar, copolymerisable monomer; (C) 0-50% of a fibrous or particulate filler or reinforcing agent; and (D) 0-30% of the usual aids and auxiliaries.

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