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    Process for the preparation of crosslinkable copolymers of propylene
    11.
    发明专利
    Process for the preparation of crosslinkable copolymers of propylene 未知

    公开(公告)号：DE3901606A1

    公开(公告)日：1990-07-26

    申请号：DE3901606

    申请日：1989-01-20

    Applicant: BASF AG

    Inventor： HASENBEIN NORBERT DR ,  MUEHLENBERND THOMAS DR

    IPC: C08K5/17

    Abstract: The process for the preparation of crosslinkable copolymers of propylene at elevated temperature by reacting propylene with from 0.05 to 2% by weight of alpha ,ss-ethylenically unsaturated carboxylic acids and/or esters thereof, or anhydrides thereof, characterised in that a multifunctional amine is added, as crosslinking agent, to the copolymer, the temperature and residence time are set so that an as yet uncrosslinked, but crosslinkable mixture is formed, and this mixture is rapidly cooled.

    12.
    发明专利
    未知

    公开(公告)号：DK0513569T3

    公开(公告)日：1999-06-23

    申请号：DK92106900

    申请日：1992-04-23

    Applicant: BASF AG

    Inventor： VOGT HEINZ DR ,  HENNIG INGOLF DR ,  SCHLAG JOHANNES DR ,  MUEHLENBERND THOMAS DR

    IPC: C08K5/09 ,  H01B3/44

    Abstract: Carboxylic acids of the general formula I where the indices and the variables have the following meanings: R , R and R : independently of one another, a hydrogen atom and a hydroxyl, carboxyl and C1- to C6-alkyl group, x, y and z: independently of one another, 0 or an integer from 1 to 6, and/or their anhydrides are capable of permanently suppressing the formation of water trees in electrical medium- and high-voltage cables containing electrically insulating and/or electrically semiconducting layers based on ethylene homopolymers and/or copolymers. This is even the case if the layers concerned contain water-soluble, basic salts. Accordingly, polymeric mixtures based on ethylene homopolymers and/or copolymers containing the abovementioned carboxylic acids and/or their anhydrides are eminently suitable for manufacturing the electrically insulating and electrically semiconducting layers such as those used in electrical medium- and high-voltage cables.

    13.
    发明专利
    未知

    公开(公告)号：AT172320T

    公开(公告)日：1998-10-15

    申请号：AT92106900

    申请日：1992-04-23

    Applicant: BASF AG

    Inventor： VOGT HEINZ DR ,  HENNIG INGOLF DR ,  SCHLAG JOHANNES DR ,  MUEHLENBERND THOMAS DR ,  CHOME - -

    IPC: C08K5/09 ,  H01B3/44

    Abstract: Carboxylic acids of the general formula I where the indices and the variables have the following meanings: R , R and R : independently of one another, a hydrogen atom and a hydroxyl, carboxyl and C1- to C6-alkyl group, x, y and z: independently of one another, 0 or an integer from 1 to 6, and/or their anhydrides are capable of permanently suppressing the formation of water trees in electrical medium- and high-voltage cables containing electrically insulating and/or electrically semiconducting layers based on ethylene homopolymers and/or copolymers. This is even the case if the layers concerned contain water-soluble, basic salts. Accordingly, polymeric mixtures based on ethylene homopolymers and/or copolymers containing the abovementioned carboxylic acids and/or their anhydrides are eminently suitable for manufacturing the electrically insulating and electrically semiconducting layers such as those used in electrical medium- and high-voltage cables.

    16.
    发明专利
    未知

    公开(公告)号：DE58906979D1

    公开(公告)日：1994-03-24

    申请号：DE58906979

    申请日：1989-08-29

    Applicant: BASF AG

    Inventor： HASENBEIN NORBERT DR ,  MUEHLENBERND THOMAS DR ,  KOEHLER GERNOT DR

    IPC: C08F2/44 ,  C08F8/00 ,  C08F8/32 ,  C08F210/02

    Abstract: A high molecular weight ethylene copolymer is prepared by high-pressure copolymerization of ethylene with an alpha , beta -ethylenically unsaturated carboxylic acid, carboxylic anhydride or a derivative thereof in the presence of a tertiary organic monoamine, preferably from 10 to 100 mol % thereof, based on the unsaturated carboxylic acid used, and can be used for preparing adhesion promoters and cable sheathing.

    Grafted, crosslinked propylene¨ copolymers
    20.
    发明专利
    Grafted, crosslinked propylene¨ copolymers 未知

    公开(公告)号：DE4022570A1

    公开(公告)日：1992-01-23

    申请号：DE4022570

    申请日：1990-07-16

    Applicant: BASF AG

    Inventor： SCHWAGER HARALD DR ,  MUEHLENBERND THOMAS DR

    IPC: C08F8/42 ,  C08F255/02

    Abstract: Copolymers (I) of propylene (P) and up to 35 wt.% other 2-10C 1-alkenes (II), grafted with alpha,beta-unsatd. carboxylic acids or derivs. (III) are claimed. (I) are obtd. by reaction of (III) with the (P) copolymer at 1-500 bar in the absence of radical initiators, by adding 0.01-1 wt.% (III) to the molten copolymer and carrying out the grafting reaction at 210-350 deg.C. Also claimed are (a) crosslinked copolymers obtd. by reaction of (I) with organic crosslinkers (IV) at 1-500 bar and 21-0350 deg. 210-350 deg.C. (b) the crosslinking process, (c) crosslinkable copolymers obtd. by mixing (IV) with (I) for less than 30 secs. at 1-500 bar and below 210 deg.C and rapidly cooling the mixt. and (d) ionomers obtd. by reaction of (I) with salts of (in)organic acids and alkali, alkaline earth or transition metals. The copolymer specifically consists of 40-95 wt.% homo-polypropylene and 5-60 wt.% statistical copolymer of (P) and (II), or a statistical copolymer contg. up to 20 wt.% (II); process (e) is carried out at not above 200 deg.C for not above 25 secs.

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