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    • 4. 发明授权
    • Water soluble crosslinked copolymers, their preparation and their use
    • 水溶性交联共聚物,其制备及其用途
    • US5962613A
    • 1999-10-05
    • US952114
    • 1997-11-24
    • Christian SchadeJurgen DeteringStefan SteinDieter BoeckhHans-Ulrich Jager
    • Christian SchadeJurgen DeteringStefan SteinDieter BoeckhHans-Ulrich Jager
    • C08F2/38C08F26/00C08F226/06C08L39/00C11D3/37C08F220/54
    • C08F226/06C11D3/3776
    • Water-soluble copolymers which are obtainable by free-radical solution polymerization ofa) 10-99.5% by weight of at least one vinylimidazole of the formula ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are identical or different and are H, C.sub.1 -C.sub.4 -alkyl, monomers of the formula ##STR2## where R.sup.4 and R.sup.5 are identical or different and are H, C.sub.1 -C.sub.4 -alkyl or together form a ring of 3 to 5 methylene groups,N-vinyloxazolidone, N-vinyltriazole, 4-vinylpyridine N-oxide or mixtures of said monomers,b) 0-89.5% by weight of other copolymerizable monoethylenically unsaturated monomers andc) 0.5-30% by weight of at least one monomer which acts as crosslinker and has at least two non-conjugated ethylenic double bondsin water and/or polar organic solvents in the presence of polymerization regulators, using from 0.1 to 5 parts by weight of polymerization regulator per 1 part by weight of crosslinker, a process for preparing the copolymers by free-radical solution polymerization of the monomers in the presence of polymerization regulators and the use of the copolymers as additive to detergents.
    • PCT No.PCT / EP96 / 02179 371日期:1997年11月24日 102(e)1997年11月24日PCT PCT 1996年5月21日PCT公布。 第WO96 / 37525号公报 日期1996年11月28日可通过自由基溶液聚合获得的水溶性共聚物a)10-99.5重量%的至少一种下式的其中R 1,R 2和R 3相同或不同的乙烯基咪唑是H,C1 C 1-4烷基,其中R 4和R 5相同或不同并且是H,C 1 -C 4 - 烷基或一起形成3至5个亚甲基的环,N-乙烯基恶唑烷酮,N-乙烯基三唑,4-乙烯基吡啶N - 所述单体的混合物,b)0-89.5重量%的其它可共聚单烯属不饱和单体和c)0.5-30重量%的至少一种充当交联剂并且具有至少两个非共轭烯属双键的单体 在聚合调节剂存在下,在水和/或极性有机溶剂中键合,每1重量份交联剂使用0.1至5重量份的聚合调节剂,通过单体的自由基溶液聚合制备共聚物的方法 在po的存在 裂解调节剂以及共聚物作为洗涤剂添加剂的用途。