Preparation of stable water-in-oil emulsions of hydrolyzed polymers of
N-vinylamides and their use
    4.
    发明授权
    Preparation of stable water-in-oil emulsions of hydrolyzed polymers of N-vinylamides and their use 失效
    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

    公开(公告)号:US5008321A

    公开(公告)日:1991-04-16

    申请号:US438034

    申请日:1989-11-20

    摘要: 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.

    摘要翻译: 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。

    Preparation of finely divided, water-soluble polymers containing
vinylamine units
    5.
    发明授权
    Preparation of finely divided, water-soluble polymers containing vinylamine units 失效
    制备细分的含有乙烯胺单元的水溶性聚合物

    公开(公告)号:US5290880A

    公开(公告)日:1994-03-01

    申请号:US661180

    申请日:1991-02-27

    CPC分类号: C08F26/02 C08F8/44

    摘要: N-vinylformamide is polymerized with or without other water-soluble monoethylenically unsaturated monomers and with or without water-insoluble monoethylenically unsaturated monomers in not less than 30% strength by weight aqueous monomer solutions in the presence of a polymerization initiator at not more than 150.degree. C. in a kneader by a method in which the polymerization is carried out to such an extent that the initially formed water-containing polymer gel disintegrates into fine particles and the finely divided polymer obtainable in this manner is hydrolyzed, preferably in the kneader, so that not less than 0.1 mol % of the N-vinylformamide units present in the polymer are converted into vinylamine units. The polymers obtainable in this manner dissolve readily in water. The aqueous solutions are used, for example, in papermaking and tertiary oil production.

    摘要翻译: N-乙烯基甲酰胺与或不与其它水溶性单烯键式不饱和单体聚合,并且在不超过150度的聚合引发剂存在下,在不低于30重量%的重量比单体水溶液中含有或不含水不溶性单烯属不饱和单体 在捏合机中,通过聚合进行到最初形成的含水聚合物凝胶分解成细颗粒的程度,并且以这种方式获得的细碎聚合物优选在捏合机中水解, 存在于聚合物中的不少于0.1mol%的N-乙烯基甲酰胺单元转化为乙烯胺单元。 以这种方式获得的聚合物容易溶于水。 水溶液用于例如造纸和三次油生产。