36.
    发明专利
    未知

    公开(公告)号:ES2134456T3

    公开(公告)日:1999-10-01

    申请号:ES95913087

    申请日:1995-03-11

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP95/00907 Sec. 371 Date Dec. 2, 1996 Sec. 102(e) Date Dec. 2, 1996 PCT Filed Mar. 11, 1995 PCT Pub. No. WO95/25756 PCT Pub. Date Sep. 28, 1995Modified copolymers which are suitable as paraffin dispersants and are obtainable by reacting a copolymer of an ethylenically unsaturated dicarboxylic acid and/or a dicarboxylic acid derivative and a diketene of the general formula I I where R1 and R2, independently of one another, are each hydrogen or C1-C30-alkyl, with an amine of the general formula II II where m may be from 0 to 100, n from 0 to 5 and x from 0 to 5, R3, R4 and R5, independently of one another, are each hydrogen or C1-C5-alkyl and A is NR6R7 or C2-C30-alkoxy, and at least one of the substituents R6 or R7 is not hydrogen and is C1-C30-alkyl or alkenyl or a polyether radical where R8 and R9 are each hydrogen or C1-C5-alkyl and p is from 1 to 100, with the proviso that, when n is 0, A is NR6R7, their preparation and use, and mineral oil middle distillates which contain these modified copolymers.

    37.
    发明专利
    未知

    公开(公告)号:AT180498T

    公开(公告)日:1999-06-15

    申请号:AT95913087

    申请日:1995-03-11

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP95/00907 Sec. 371 Date Dec. 2, 1996 Sec. 102(e) Date Dec. 2, 1996 PCT Filed Mar. 11, 1995 PCT Pub. No. WO95/25756 PCT Pub. Date Sep. 28, 1995Modified copolymers which are suitable as paraffin dispersants and are obtainable by reacting a copolymer of an ethylenically unsaturated dicarboxylic acid and/or a dicarboxylic acid derivative and a diketene of the general formula I I where R1 and R2, independently of one another, are each hydrogen or C1-C30-alkyl, with an amine of the general formula II II where m may be from 0 to 100, n from 0 to 5 and x from 0 to 5, R3, R4 and R5, independently of one another, are each hydrogen or C1-C5-alkyl and A is NR6R7 or C2-C30-alkoxy, and at least one of the substituents R6 or R7 is not hydrogen and is C1-C30-alkyl or alkenyl or a polyether radical where R8 and R9 are each hydrogen or C1-C5-alkyl and p is from 1 to 100, with the proviso that, when n is 0, A is NR6R7, their preparation and use, and mineral oil middle distillates which contain these modified copolymers.

Patent Agency Ranking