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    17.
    发明专利
    未知

    公开(公告)号：DE19614846A1

    公开(公告)日：1997-10-16

    申请号：DE19614846

    申请日：1996-04-15

    Applicant: BASF AG

    Inventor： MAC KEE GRAHAM EDMUND DR ,  ROSENAU BERNHARD DR ,  HECKMANN WALTER DR

    IPC: C08F8/32 ,  C08F265/04 ,  C08F290/04 ,  C08L51/00 ,  C08L51/04 ,  C08L55/02 ,  C08J5/00 ,  C08J3/20 ,  C08F220/02

    Abstract: For the production of moulding compounds with good weather resistance, improved impact resistance and good creep properties, an elastomeric acrylic ester copolymer is produced which contains comonomers polymerised with chemically reactive groups. This copolymer is dissolved or macerated in monomers like styrene and acrylonitrile forming hard grafts. After the addition of monomers and/or polymers with chemically reactive groups and the possible addition of a chemically reactive cross-linking agent, the resultant monomer-copolymer mixture is subjected to graft polymerisation up to a conversion of over 15 wt. % of the monomers as a thermally or radically initiated polymerisation in substance or solution. The moulding compounds may be used as delustering agents for polymer mixtures.

    18.
    发明专利
    未知

    公开(公告)号：DE4440674A1

    公开(公告)日：1996-05-15

    申请号：DE4440674

    申请日：1994-11-14

    Applicant: BASF AG

    Inventor： MAC KEE GRAHAM EDMUND ,  MOORS RAINER DR ,  HECKMANN WALTER DR ,  LARBIG HARALD DR ,  ROSENAU BERNHARD DR

    IPC: C08L15/00 ,  C08F2/18 ,  C08F220/12 ,  C08F265/04 ,  C08F285/00 ,  C08L51/00 ,  C08L51/04 ,  C08L33/06 ,  C08K7/00 ,  C08F220/18

    Abstract: In a process for producing modified rubber moulding masses, a first mixture (A) that contains at least one alkyl acrylate or methacrylate (a) having the general formula (I), in which R stands for a hydrogen atom or a methyl group and R stands for an alkyl group with 1 to 32 carbon atoms, optionally a first monomer (b) with two or more double bonds and optionally a second or several other monomers (c), is in a first step polymerised into a rubber (B), preferably together with free radicals. In a second step, a third or several other monomers (d) are added to the thus obtained rubber (B) to form a second mixture (C). In a third step, the second mixture (C) is polymerised together with free radicals into the modified rubber moulding mass (D). During or after polymerisation, the mixture is reacted at a temperature above 120 DEG C with a compound (e) that contains at least two peroxy groups.

    19.
    发明专利
    未知

    公开(公告)号：ES2063212T3

    公开(公告)日：1995-01-01

    申请号：ES90115345

    申请日：1990-08-10

    Applicant: BASF AG

    Inventor： HORN PETER DR ,  HINZ WERNER DR ,  HECKMANN WALTER DR ,  RAMSTEINER FALKO DR ,  GEROLD FRIEDRICH

    IPC: A61L31/00 ,  A61L2/07 ,  A61L27/18 ,  A61L27/34 ,  A61L27/44 ,  B01D63/02 ,  B01D65/00 ,  C08G18/10 ,  C08G18/12 ,  C08G18/48 ,  C08G18/66 ,  C08G18/72 ,  C08G18/76

    Abstract: The present invention relates to transparent essentially non-cellular polyurethane casting compositions that are sterilizable with superheated steam which are prepared by reacting: (A) modified diphenylmethane diisocyanates (A) liquid at 23 DEG C. obtained by reacting (A1) 4,4'-diphenylmethane diisocyanate or (A2) 2,4'-diphenylmethane diisocyanate or (A3) a diphenylmethane diisocyanate mixture with (A4) at least one polyoxypropylene polyol and/or (A5) at least one polyoxypropylene polyoxyethylene polyol containing 1 to 80 weight percent of ethylene oxide units whereby (A4) and (A5) have a functionality of 4 to 8 and a hydroxyl number of 150 to 500 and are obtained while using sucrose and/or preferably sorbitol as initiator molecules (A6) a mixture of (A4) and/or (A5) and at least one polyoxypropylene polyol and/or polyoxyethylene polyol initiated with glycerine and/or trimethylolpropane in a NCO:OH group ratio of 2.5:1 to 15:1 with (B) at least one compound having at least reactive hydrogen atoms which preferably contains no primary, secondary or tertiary amino groups in bonded form in the presence of or absence of (C) catalysts. The present invention also relates to a process for the preparation of polyurethane casting compositions and their use for medical-technical articles.

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