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122 records (took 0.042 seconds)

    111.
    发明专利
    未知

    公开(公告)号：AT215570T

    公开(公告)日：2002-04-15

    申请号：AT98965218

    申请日：1998-12-01

    Applicant: BASF AG

    Inventor： DECKERS ANDREAS ,  WENDEROTH BERND ,  WEDEL PETER ,  WEBER WILHELM

    IPC: C10L1/18 ,  C08F2/00 ,  C08F210/02 ,  C08F218/08 ,  C10L1/197

    Abstract: In a process for preparing ethylene-vinyl acetate copolymers in which a mixture of ethylene and vinyl acetate is polymerized continuously in the presence of free-radical polymerization initiators and, if desired, molecular weight regulators in a cooled tube reactor at a pressure in the range from 1000 to 3500 bar, and the poly-merization initiator is added at the beginning and at two or more points along the tube reactor, and temperature changes in the reaction mixture along the tube reactor, between the first temperature maximum and the last addition of the polymerization initiator, are within a range of not more than 20° C.

    115.
    发明专利
    未知

    公开(公告)号：NO20002778L

    公开(公告)日：2000-07-31

    申请号：NO20002778

    申请日：2000-05-30

    Applicant: BASF AG

    Inventor： DECKERS ANDREAS ,  WENDEROTH BERND ,  WEDEL PETER ,  WEBER WILHELM

    IPC: C10L1/18 ,  C08F2/00 ,  C08F210/02 ,  C08F218/08 ,  C10L1/197

    Abstract: In a process for preparing ethylene-vinyl acetate copolymers in which a mixture of ethylene and vinyl acetate is polymerized continuously in the presence of free-radical polymerization initiators and, if desired, molecular weight regulators in a cooled tube reactor at a pressure in the range from 1000 to 3500 bar, and the poly-merization initiator is added at the beginning and at two or more points along the tube reactor, and temperature changes in the reaction mixture along the tube reactor, between the first temperature maximum and the last addition of the polymerization initiator, are within a range of not more than 20° C.

    120.
    发明专利
    未知

    公开(公告)号：AT151803T

    公开(公告)日：1997-05-15

    申请号：AT93915946

    申请日：1993-07-17

    Applicant: BASF AG

    Inventor： BESECKE SIEGMUND ,  DECKERS ANDREAS ,  GUENTHERBERG NORBERT ,  SEITZ FRIEDRICH

    IPC: C08L25/00 ,  C08F8/32 ,  C08L25/06 ,  C08L25/12 ,  C08L25/14 ,  C08L25/18 ,  C08L33/00 ,  C08L33/24

    Abstract: Transparent moulding compounds containing A) 1 to 99 wt % of a copolymer obtainable by polymerizing a mixture of monomers of a1) 50 to 90 wt % of a vinyl aromatic monomer, a2) 10 to 50 wt % acrylonitrile or methacrylonitrile or a mixture thereof, and a3) 0 to 30 wt % of another monomer, and B) 99 to 1 wt % of a polymer based on a vinyl aromatic monomer obtainable by 1) polymerizing a monomer mixture of b1) 60 to 99 wt % of a mixture consisting of b11) 100 to 50 wt % of a vinyl aromatic monomer and b12) 0 to 50 wt % acrylonitrile or methacrylonitrile or a mixture thereof, and b2) 40 to 1 wt % of a C1-C20 alkyl ester of methacrylic or acrylic acid or mixtures of such esters and 2) causing the polymers obtained according to 1) to react with an amine of the general formula (I): RNH2, in which R is C2-C10 alkyl, C5-C8 cycloalkyl, C6-C10 aryl or C6-C10-aryl-C1-C4 alkyl, where these radicals, except for the C2-C10 alkyl radical, can be substituted up to three times by radicals selected from the group consisting of C1-C4 alkyl, C1-C4 alkoxy and halogen.

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