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    • 4. 发明授权
    • Preparation of stable water-in-oil emulsions of hydrolyzed polymers of
N-vinylamides and their use
    • N-乙烯基酰胺水解聚合物的稳定的油包水乳液的制备及其用途
    • US5008321A
    • 1991-04-16
    • US438034
    • 1989-11-20
    • Heinrich HartmannWalter DenzingerMichael KroenerNorbert SendhoffEnrique Freudenberg
    • Heinrich HartmannWalter DenzingerMichael KroenerNorbert SendhoffEnrique Freudenberg
    • B01F17/42C08F2/32C08F8/12C08F26/00C08F26/02D21F1/66D21H17/34
    • C08F8/12D21H17/55D21H21/10C08F2800/20C08F2810/50
    • Stable water-in-oil emulsions of hydrolyzed polymers of N-vinylamides of the formula ##STR1## where R and R.sup.1 are each H or C.sub.1 -C.sub.6 -alkyl are prepared by polymerization of a compound of the formula I alone or as a mixture with other monoethylenically unsaturated monomers, in the form of a water-in-oil emulsion, to give a water-in-oil polymer emulsion, and subsequent hydrolysis of the polymer, by a process in which hydrolysis of the polymer in the form of the water-in-oil polymer emulsion is carried out in the presence of an acid or base and of from 1 to 30% by weight, based on the polymer, of an emulsifier which is obtainable by(A) reacting a C.sub.10 -C.sub.22 -fatty alcohol with epichlorohydrin in a molar ratio of from 1:0.5 to 1:1.5 to give a glycidyl ether,(B) reacting the glycidyl ether with (1) a saturated C.sub.2 -C.sub.6 -alcohol containing from 2 to 6 OH groups or (2) its monoether with a C.sub.10 -C.sub.22 -fatty alcohol, in a molar ratio of glycidyl ether to (1) or (2) of from 1:0.5 to 1:6, in the presence of an acid or base, and(C) alkoxylating the reaction product from (B) with one or more C.sub.2 -C.sub.4 -alkylene oxides in a molar ratio of from 1:1 to 1:6.The polymer emulsions obtainable in this manner are used as drainage aids, retention aids and flocculants in the making of paper and paper products.
    • 式(I)的N-乙烯基酰胺的水解聚合物的稳定的油包水乳液,其中R和R 1各自为H或C 1 -C 6 - 烷基,其通过将式I化合物单独或作为 与油包水乳液形式的其它单烯键式不饱和单体的混合物,通过以下形式的水解方法得到油包水聚合物乳液,并随后水解聚合物 的油包水聚合物乳液在酸或碱的存在下进行,并且以聚合物为基础计,为1至30重量%的乳化剂,其可通过(A)使C10-C22 - 醇与摩尔比为1:0.5至1:1.5的醇,得到缩水甘油醚,(B)使缩水甘油醚与(1)含有2-6个OH基团的饱和C 2 -C 6醇反应,或 (2)其单醚与C 10 -C 22脂肪醇,其缩水甘油醚与(1)或(2)的摩尔比为1:0.5至1:6,在存在o (C)将(B)的反应产物与一种或多种摩尔比为1:1至1:6的C 2 -C 4 - 氧化烯烷氧基化。 以这种方式获得的聚合物乳液可用作造纸和纸制品中的助滤剂,助留剂和絮凝剂。