2.
    发明专利
    未知

    公开(公告)号:DE59504642D1

    公开(公告)日:1999-02-04

    申请号:DE59504642

    申请日:1995-07-18

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP95/02805 Sec. 371 Date Jan. 21, 1997 Sec. 102(e) Date Jan. 21, 1997 PCT Filed Jul. 18, 1995 PCT Pub. No. WO93/02498 PCT Pub. Date Feb. 1, 1996Vinyl carbamate compounds are prepared by reacting appropriate secondary amines with carbon dioxide and acetylenically unsaturated compounds in the presence of a compound of a metal from the platinum group, in particular a ruthenium compound, with either one of the two process steps (a) and (b) or, preferably, both being carried out: (a) the acetylene compound is reinjected during the reaction; (b) the reaction is carried out in the presence of a tertiary amine.

    4.
    发明专利
    未知

    公开(公告)号:DE59603317D1

    公开(公告)日:1999-11-18

    申请号:DE59603317

    申请日:1996-03-08

    Applicant: BASF AG

    Abstract: Prepn. of N-vinyl-lactams (I) of formula (A) (where R = CH=CH2; n=1-3) comprises reacting lactams (II) of formula (A) (where R = H; n = 1-3) with (a) 10-90 wt.% aq. alkali hydroxide soln. by distn. at 50-250 degrees C and 1-100 mbar with a residence time of 0.1-5 hrs. and then (b) C2H2 at 60-250 degrees C and 1-100 bar. Pref. reaction (a) is carried out in a column with at least 2 theoretical plates. (II) and aq. alkali hydroxide soln. are fed into the upper third of the column. A 30-60, esp. 45-55 wt.% soln., more esp. KOH soln., is used. Reaction is carried out at 70-180 degrees C and 1-30 mbar with a residence time of 0.5-2 hrs.

    5.
    发明专利
    未知

    公开(公告)号:DE59405657D1

    公开(公告)日:1998-05-14

    申请号:DE59405657

    申请日:1994-08-16

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP94/02721 Sec. 371 Date Feb. 20, 1996 Sec. 102(e) Date Feb. 20, 1996 PCT Filed Aug. 16, 1994 PCT Pub. No. WO95/06074 PCT Pub. Date Mar. 2, 1995Water-soluble copolymerizates are disclosed containing carboxyl groups, and also containing the following components incorporated by polymerization: (a) 30 to 80 mol % monoethylenically unsaturated C3-C8 carboxylic acids, anhydrides thereof and/or water-soluble salts thereof; (b) 10 to 50 mol % C2-C8 olefines, styrene, alkyl styrene, C1-C10 alkyl vinyl ethers and/or vinyl esters of saturated C1-C10 monocarboxylic acids; and (c) 0.01 to 20 mol % vinyl ethers and/or allyl ethers of alkoxylated C1-C30 alcohols. The copolymerizates in question have a K-value of at least 8 (determined after H. Fikentscher). Also disclosed are methods of producing the water-soluble copolymerizates by copolymerization of the monomers in the presence of radical-forming polymerization initiators, and the use of the polymerizates as scale inhibitors.

    9.
    发明专利
    未知

    公开(公告)号:NO315564B1

    公开(公告)日:2003-09-22

    申请号:NO961334

    申请日:1996-04-01

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP94/03179 Sec. 371 Date Apr. 2, 1996 Sec. 102(e) Date Apr. 2, 1996 PCT Filed Sep. 23, 1994 PCT Pub. No. WO95/09877 PCT Pub. Date Apr. 13, 1995An ethylene-based copolymer which is suitable as a flow improver for mineral oil middle distillates and is composed of a) from 50 to 94% by weight of ethylene; b) from 3 to 30% by weight of one or more vinyl esters of C2-C6-monocarboxylic acids; c) from 3 to 20% by weight of one or more aminoalkyl acrylates of the formula I (I) which R1 is hydrogen or methyl, R2 and R3 are identical or different and are each hydrogen or C1-C6-alkyl and A1 is straight-chain or branched C2-C10-alkylene; and d) from 0 to 10% by weight of one or more monomers which are copolymerizable with the monomers a) to c), wherein copolymers containing vinyl acetate as monomer b) and having a number average molecular weight of from 5,000 to 50,000 are excluded from the scope of the copolymer.

    10.
    发明专利
    未知

    公开(公告)号:FI961470A0

    公开(公告)日:1996-04-01

    申请号:FI961470

    申请日:1996-04-01

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP94/03179 Sec. 371 Date Apr. 2, 1996 Sec. 102(e) Date Apr. 2, 1996 PCT Filed Sep. 23, 1994 PCT Pub. No. WO95/09877 PCT Pub. Date Apr. 13, 1995An ethylene-based copolymer which is suitable as a flow improver for mineral oil middle distillates and is composed of a) from 50 to 94% by weight of ethylene; b) from 3 to 30% by weight of one or more vinyl esters of C2-C6-monocarboxylic acids; c) from 3 to 20% by weight of one or more aminoalkyl acrylates of the formula I (I) which R1 is hydrogen or methyl, R2 and R3 are identical or different and are each hydrogen or C1-C6-alkyl and A1 is straight-chain or branched C2-C10-alkylene; and d) from 0 to 10% by weight of one or more monomers which are copolymerizable with the monomers a) to c), wherein copolymers containing vinyl acetate as monomer b) and having a number average molecular weight of from 5,000 to 50,000 are excluded from the scope of the copolymer.

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