中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

50 records (took 0.02 seconds)

    48.
    发明专利
    未知

    公开(公告)号：DE59601732D1

    公开(公告)日：1999-05-27

    申请号：DE59601732

    申请日：1996-08-29

    Applicant: BASF AG

    Inventor： STEIN STEFAN ,  BOECKH DIETER ,  SCHADE CHRISTIAN DR ,  ROESSLER GERHARD

    IPC: C08F2/10 ,  C08F26/00 ,  C08F26/02 ,  C08F26/06 ,  C11D3/00 ,  C11D3/37

    Abstract: PCT No. PCT/EP96/03795 Sec. 371 Date Mar. 3, 1998 Sec. 102(e) Date Mar. 3, 1998 PCT Filed Aug. 29, 1996 PCT Pub. No. WO97/09359 PCT Pub. Date Mar. 13, 1997Porous polymers which are in powder form and contain N-vinylimidazole units and which are obtainable by free-radical precipitation polymerization of a) 5-100% by weight of at least one N-vinylimidazole of the formula where R1, R2 and R3 are identical or different and are H, C1-C4-alkyl, N-vinylaxazolidone, N-vinyltriazole, 4-vinylpyridine N-oxide or mixtures of said monomers, b) 0-95% by weight of other copolymerizable monoethylenically unsaturated monomers and c) 0-50% by weight of at least one monomer with at least two non-conjugated ethylenic double bonds in aqueous solution which contains 0.5-30% by weight of at least one electrolyte and, based on the monomers employed, 0.5-80% by weight of at least one surfactant, a process of the preparation thereof, and the use of the porous polymers.

    WATER-SOLUBLE COPOLYMERS CONTAINING POLYMERIZED-IN CROSS-LINKING AGENTS, PROCESS FOR THEIR PREPARATION AND THEIR USE
    50.
    发明专利
    WATER-SOLUBLE COPOLYMERS CONTAINING POLYMERIZED-IN CROSS-LINKING AGENTS, PROCESS FOR THEIR PREPARATION AND THEIR USE 未知

    公开(公告)号：CA2217336A1

    公开(公告)日：1996-11-28

    申请号：CA2217336

    申请日：1996-05-21

    Applicant: BASF AG

    Inventor： STEIN STEFAN ,  DETERING JUERGEN ,  JAEGER HANS-ULRICH ,  SCHADE CHRISTIAN ,  BOECKH DIETER

    IPC: C08F2/38 ,  C08F26/00 ,  C08F226/06 ,  C08L39/00 ,  C11D3/37 ,  C08F226/00

    Abstract: The invention concerns water-soluble copolymers obtained by the radically initiated solution polymerization of: a) between 10 and 99.5 wt % of at least one vinylimidazole of formula (I), in which R1, R2 and R3 are identical or different and stand for H, C1 to C4 alkyl, monomers of formula (II), in which R4 and R5 are identical or different and stand for H, C1 to C4 alkyl or form with one another a ring of between 3 and 5 methylene groups, Nvinyloxazolidone, N-vinyltriazole, 4-vinylpyridine-N-oxide or mixtures of said monomers; b) between 0 and 89.5 wt% of other copolymerizable monoethylenically unsaturated monomers; and c) between 0.5 and 30 wt% of at least one monomer acting as cross-linking agent with at least two ethylenically unsaturated nonconjugated double bonds. The polymerization is carried out in water and/or polar organic solvents in the presence of polymerization control agents, between 0.1 and 5 parts by weight of polymerization control agents being used per 1 part by weight of cross-linking agent. The invention also concerns a process for preparing said copolymers by radically initiated solution polymerization of the monomers in the presence of polymerization control agents, and the use of the copolymers as additives for washing products.

Patent Agency Ranking