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    47.
    发明专利
    未知

    公开(公告)号：DE59600966D1

    公开(公告)日：1999-01-21

    申请号：DE59600966

    申请日：1996-02-10

    Applicant: BASF AG

    Inventor： SCHADE CHRISTIAN ,  SCHNEIDER KARL-HEINRICH

    IPC: C08F2/24 ,  C08F2/32 ,  C08F26/06 ,  C08F226/06 ,  C09K23/00 ,  C09K23/52 ,  C11D3/00 ,  C11D3/37

    Abstract: PCT No. PCT/EP96/00575 Sec. 371 Date Aug. 19, 1997 Sec. 102(e) Date Aug. 19, 1997 PCT Filed Feb. 10, 1996 PCT Pub. No. WO96/26229 PCT Pub. Date Aug. 29, 1996Agglomerated, finely divided, crosslinked vinylimidazole copolymers obtainable by free-radically initiated polymerization of N-vinylimidazoles of the formula (I) where R, R1 and R2 are identical or different and each is H, C1-C4-alkyl or phenyl, with at least one crosslinker, optionally other water-soluble monoethylenically unsaturated monomers, and optionally water-insoluble monoethylenically unsaturated monomers in the aqueous phase of a water-in-oil emulsion in the presence of at least one emulsifier comprising block copolymers of the type AB or ABA or comb copolymers constructed from A and B, where A is a hydrophobic polymer block having a molecular weight of >500 g/mol and B is a hydrophilic polymer block having a molecular weight of >500 g/mol, to stabilize the water-in-oil monomer emulsion, azeotropic distillative removal of the water from the water-in-oil polymer suspension, and isolation of the polymers, processes for preparing said agglomerated, finely divided, crosslinked vinylimidazole copolymers, and use of the copolymers in detergents to inhibit the transfer of dye during the wash.

    49.
    发明专利
    未知

    公开(公告)号：DE59404478D1

    公开(公告)日：1997-12-04

    申请号：DE59404478

    申请日：1994-02-21

    Applicant: BASF AG

    Inventor： SCHADE CHRISTIAN ,  BOECKH DIETER ,  DETERING JUERGEN

    IPC: C08F8/06 ,  C08F26/08

    Abstract: PCT No. PCT/EP94/00490 Sec. 371 Date Aug. 24, 1995 Sec. 102(e) Date Aug. 24, 1995 PCT Filed Feb. 21, 1995 PCT Pub. No. WO94/20549 PCT Pub. Date Sep. 15, 1994Polyvinylpyridine N-oxides are prepared by oxidizing polyvinyl-pyridines with aqueous solutions of hydrogen peroxide in the presence of acids and oxides or acids of elements of Groups 5b, 6b, 7b and 8 of the Periodic Table or of salts of these acids as catalyst, it also being possible for the oxidation to take place in the absence of the catalysts when from 40 to 80% strength aqueous solutions of at least dibasic carboxylic acids or of polymers of monoethylenically unsaturated carboxylic acids are used as solvent.

    50.
    发明专利
    未知

    公开(公告)号：DE59404369D1

    公开(公告)日：1997-11-20

    申请号：DE59404369

    申请日：1994-11-23

    Applicant: BASF AG

    Inventor： SCHADE CHRISTIAN ,  JAEGER HANS-ULRICH ,  DETERING JUERGEN

    IPC: C08F2/38 ,  C08F2/42 ,  C08F26/00 ,  C08F26/06 ,  C08F26/10 ,  C08F226/06 ,  C11D3/00 ,  C11D3/37

    Abstract: PCT No. PCT/EP94/03868 Sec. 371 Date May 20, 1996 Sec. 102(e) Date May 20, 1996 PCT Filed Nov. 23, 1994 PCT Pub. No. WO95/15345 PCT Pub. Date Jun. 8, 1995Polymers of alkyl-1-vinylimidazoles, a process for preparing polymers of alkyl-1-vinylimidazoles by free-radical polymerization of a monomer mixture comprising (a) 10-100% by weight of at least one alkyl-1-vinylimidazole and (b) 0-90% by weight of 1-vinylpyrrolidone, 1-vinylcaprolactam, 1-vinyltriazole, 1-vinylimidazole, 1-vinyloxazolidinone or mixtures thereof, (c) 0-30% by weight of other monoethylenically unsaturated monomers and (d) 0-10% by weight of a monomer containing at least 2 monoethylenic double bonds in water, at least one C1-C4-alcohol or mixtures thereof, and the use of polymers which comprise at least 10% by weight of an alkyl-1-vinylimidazole as copolymerized unit as additive to detergents to inhibit transfer of dyes during the washing process.

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