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    Thermoplastic moulding composition
    41.
    发明专利
    Thermoplastic moulding composition 未知

    公开(公告)号：DE3217438A1

    公开(公告)日：1983-11-10

    申请号：DE3217438

    申请日：1982-05-08

    Applicant: BASF AG

    Inventor： BRANDSTETTER FRANZ DIPL CHEM D ,  HAMBRECHT JUERGEN DIPL CHEM DR ,  HOENL HANS DIPL-CHEM DR ,  SIMAK PETER DIPL CHEM DR ,  ZIEGLER WALTER DIPL CHEM DR

    IPC: C08L25/00 ,  C08L51/06

    Abstract: The invention relates to a thermoplastic moulding composition comprising A) a (co)polymer in a proportion of from 40 to 99 % by weight, based on A) and B), which contains at least 50 % by weight, based on A), of a copolymerised vinylaromatic monomer, and B) a soft component in a proportion of from 1 to 60 % by weight, based on A) and B), which comprises a graft base and a graft shell, where the graft base is built up from, in each case based on the graft base, b1) from 40 to 99.5 parts by weight of ethylene, b2) from 0.5 to 30 parts by weight of an acrylate of tricyclodecenyl alcohol and b3) from 0 to 50 parts by weight of at least one ethylene-copolymerisable monomer, and where the graft shell is built up from at least one monomer from the group consisting of vinylaromatic and ethylenically unsaturated monomers. The moulding composition may contain conventional additives and is used to produce mouldings.

    Thermoplastic moulding compositions
    43.
    发明专利
    Thermoplastic moulding compositions 未知

    公开(公告)号：DE3149812A1

    公开(公告)日：1983-07-21

    申请号：DE3149812

    申请日：1981-12-16

    Applicant: BASF AG

    Inventor： BRANDSTETTER FRANZ DIPL CHEM D ,  HAMBRECHT JUERGEN DIPL CHEM DR ,  MUENSTEDT HELMUT DIPL PHYS DR

    IPC: C08L25/12 ,  C08L51/04 ,  C08L69/00 ,  C08L51/06

    Abstract: The invention relates to a thermoplastic moulding composition comprising a polycarbonate A, a graft copolymer B and a copolymer C. Component A is an aromatic polycarbonate prepared using conventional branching agents. The polycarbonate A makes up from 10 to 90% by weight, based on the moulding composition. The graft copolymer B is present in a proportion of from 10 to 50% by weight, based on the moulding composition, and contains, as graft base, an elastomer (b1) built up from at least one of the monomers from the group consisting of conjugated dienes having 4 or 5 carbon atoms, alkyl (meth)acrylates having 1 to 8 carbon atoms in the alkyl radical, vinylaromatic monomers having 6 to 12 carbon atoms, ethylene, propylene and a non-conjugated diene. From 20 to 60% by weight, based on B, of a mixture of styrene and acrylonitrile is grafted onto this graft base. The copolymer C makes up from 0.5 to 80% by weight, based on the moulding composition, and is built up from at least one of the monomers styrene or alpha -methylstyrene and acrylonitrile. The moulding composition may contain conventional additives and is used to produce mouldings.

    45.
    发明专利
    未知

    公开(公告)号：DE3140383A1

    公开(公告)日：1983-04-28

    申请号：DE3140383

    申请日：1981-10-10

    Applicant: BASF AG

    Inventor： HAMBRECHT JUERGEN DIPL CHEM DR ,  HARTMANN HEINRICH DIPL CHEM DR ,  DENZINGER WALTER ING GRAD ,  HETTCHE ALBERT DIPL CHEM DR ,  TRIESELT WOLFGANG DIPL CHEM DR ,  SCHNEIDER ROLF DIPL CHEM DR

    IPC: C08F2/02 ,  C08F220/04 ,  C11D3/37 ,  C08F222/02 ,  C08F222/04

    Abstract: 1. A process for the preparation of polymeric organic acids by copolymerizing monoolefinically unsaturated monofunctional acids and monoolefinically unsaturated monomers, copolymerizable therewith and devoid of acid groups, with or without monoolefinically unsaturated dicarboxylic acids and/or anhydrides which are copolymerizable with the preceding monomers, in the presence of a free radical initiator at elevated temperatures and superatmospheric pressures, wherein the copolymerization is carried out as a continuous mass polymerization using, based on the sum of the monomers, a) from 50 to 95% by weight of one or more of the unsaturated monofunctional acids of 3 to 10 carbon atoms, b) from 0.5 to 5% by weight of one or more of the monomers copolymerizable with a) and devoid of acid groups, and c) from 0 to 49% by weight of one or more of the unsaturated dicarboxylic acids or their anhydrides of 4 to 6 carbon atoms, with the proviso that the percentages of a, b and c add up to 100, in the presence of 0.1 to 5% by weight, based on the sum of a, b and c, of the free radical initiator, at from 200 to 400 degrees C, and the copolymers obtained may, if desired, be completely or partially neutralized.

    47.
    发明专利
    未知

    公开(公告)号：DE3129378A1

    公开(公告)日：1983-02-10

    申请号：DE3129378

    申请日：1981-07-25

    Applicant: BASF AG

    Inventor： BRANDSTETTER FRANZ DIPL CHEM D ,  HAMBRECHT JUERGEN DIPL CHEM DR ,  STEPHAN RUDOLF DIPL CHEM DR

    IPC: C08L25/12 ,  C08L51/00 ,  C08L51/06

    Abstract: A thermoplastic molding material contains 50-90% by weight of a hard component A comprising one or more copolymers of styrene and/or alpha -methylstyrene with acrylonitrile, and 50-10% by weight of a graft copolymer B comprising 40-80% by weight of a crosslinked acrylate polymer which has a mean particle size greater than 0.8 mu m (d50 value of the cumulative mass distribution) and onto which 20-60% by weight of a mixture of styrene and acrylonitrile in a weight ratio of from 88:12 to 65:35 is grafted. The novel molding material is used for the production of moldings.

    Process for removing residual monomers from polymers
    48.
    发明专利
    Process for removing residual monomers from polymers 未知

    公开(公告)号：DE3107732A1

    公开(公告)日：1982-09-16

    申请号：DE3107732

    申请日：1981-02-28

    Applicant: BASF AG

    Inventor： HAMBRECHT JUERGEN DIPL CHEM DR

    IPC: C08F6/00 ,  C08F6/10

    Abstract: A process for removing residual monomers from polymers by mixing the polymers with carboxylic acid hydrazides at above the glass transition temperature of the polymer and the decomposition temperature of the carboxylic acid hydrazides. The degassed polymers obtainable by the process of the invention are valuable starting materials for numerous applications of plastics, in particular for plastics in contact with foodstuffs, for example in packaging.

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