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    61.
    发明专利
    未知

    公开(公告)号：DE19521848A1

    公开(公告)日：1996-12-19

    申请号：DE19521848

    申请日：1995-06-16

    Applicant: BASF AG

    Inventor： NIESNER NORBERT DR ,  GUENTHERBERG NORBERT DR ,  KNOLL KONRAD DR ,  LOTH WOLFGANG DR ,  TRAUTH HUBERT

    IPC: C08K5/13 ,  C08K5/1545 ,  C08K5/524 ,  C08K5/15 ,  C08K5/17 ,  C08L25/04 ,  C08L33/00

    Abstract: A faint-smelling, light-, heat- and/or air-oxygen-stabilised moulding material made of at least one styrene homopolymer or copolymer or acrylate or methacrylate polymers contain stabilising amounts of for example 0.01 to 1 % by weight alpha-tocopherol and 0.1 to 2 % by weight of an organic phosphite, in a quantitative ratio between alpha-tocopherol and phosphite from 1:1 to 1:4, and preferably 0.01 to 2 % by weight of a sterically hindered phenol. The percentages by weight refer to the polymer fraction. The organic phosphite is in turn stabilised with up to 5 % by weight (in relation to the phosphite weight) of an amine or alkanolamine.

    65.
    发明专利
    未知

    公开(公告)号：DE59302449D1

    公开(公告)日：1996-06-05

    申请号：DE59302449

    申请日：1993-12-23

    Applicant: BASF AG

    Inventor： DECKERS ANDREAS DR ,  GUENTHERBERG NORBERT DR ,  NIESSNER NORBERT DR

    IPC: C08L33/12 ,  C08L51/00 ,  C08L51/06 ,  C08L83/04

    Abstract: The present invention relates to moulding compositions based on polymethyl methacrylate, essentially containing A) from 99.99 to 95.0% by weight of a mixture essentially comprising a1) from 5 to 95% by weight of polymethyl methacrylate, obtainable by polymerisation of a mixture essentially comprising a11) from 80 to 100% by weight of methyl methacrylate and a12) from 0 to 20% by weight of a C1-C20-alkyl ester of acrylic acid, and a2) from 95 to 5% by weight of a multistep graft copolymer based on a C1-C20-alkyl ester of acrylic and/or methacrylic acid, and B) from 0.01 to 5.0% by weight of a polysiloxane of the formula I in which R is C1-C6-alkyl or C6-C10-aryl, R is hydroxy-C1-C6-alkyl or amino-C1-C6-alkyl, and n is a natural number from 5 to 200. d

    66.
    发明专利
    未知

    公开(公告)号：DE4437501A1

    公开(公告)日：1996-04-25

    申请号：DE4437501

    申请日：1994-10-20

    Applicant: BASF AG

    Inventor： GUENTHERBERG NORBERT DR ,  WEBER MARTIN DR ,  GRUBER FREDDY DR ,  LINDENSCHMIDT GERHARD DR

    IPC: B29C45/00 ,  B29C48/03 ,  B29C48/305 ,  C08F265/06 ,  C08L9/06 ,  C08L21/00 ,  C08L25/02 ,  C08L25/04 ,  C08L51/00 ,  C08L51/04 ,  C08L51/06 ,  C08L53/02 ,  C08L71/02 ,  B29C47/14

    Abstract: Thermoplastic moulding materials (I) contain: (A) 30-98 wt.% of a graft copolymer of: (ak) 30-90 wt.% rubber-elastic grafting core, obtd. by copolymerisation of: (ak1) 80-99.99 wt.% (1-10C alkyl) acrylate, (ak2) 0.01-20 wt.% crosslinking monomer, and (ak3) 0-40 wt.% other comonomer(s); and (as) 10-70 wt.% of a grafted shell derived from: (as1) 50-100 wt.% styrene cpd. of formula (a); and (as2) 0-50 wt.% other comonomer(s); (B) 1-50 wt.% of a thermoplastic polymer of: (b1) 50-100 wt.% styrene and/or alpha -methylstyrene (AMS), (b2) 0-50 wt.% acrylonitrile, and (b3) 0-50 wt.% other comonomer(s); and (C) 1-70 wt.% of a copolymer of: (c1) 30-90 wt.% styrene and AMS, (c2) 10-70 wt.% butadiene, and (c3) 0-30 wt.% other comonomer(s); comprising: (i) block X obtd. by polymerising (c2) and opt. (c3) and block Y by polymerising (c1) and opt. (c3), or (ii) a polymer with a butadiene-rich initial segment, increasing amts. of styrene along the chain, and a terminal segment of homo-polystyrene (PS); or (iii) a star-shaped polymer obtd. by linking several polymer chains contg. (c1)-(c3) with polyfunctional mols., and in which the olefinic double bonds are completely or almost completely hydrogenated. Also claimed are films and moulded prods. obtd. from (I). R , R = H or 1-8C alkyl, and/or (1-8C alkyl) (meth)acrylate.

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