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    Water-soluble high polymers and their preparation
    1.
    发明授权
    Water-soluble high polymers and their preparation 失效
    水溶性高聚物及其制备方法

    公开(公告)号：US4138446A

    公开(公告)日：1979-02-06

    申请号：US838052

    申请日：1977-09-30

    申请人： Shigenao Kawakami ,  Tatsumi Shibata ,  Shin-Ichi Isaoka ,  Tutomu Shintani

    发明人： Shigenao Kawakami ,  Tatsumi Shibata ,  Shin-Ichi Isaoka ,  Tutomu Shintani

    IPC分类号： C08F220/56 ,  C08F267/10 ,  C08F2/00 ,  C08F4/30 ,  C08F220/00

    CPC分类号： C08F220/56 ,  C08F267/10 ,  Y10S526/923

    摘要： In the production of a water-soluble, cationic high polymer of (A) at least one of acrylamide and methacrylamide and (B) at least one of ammonium type monomers of either one of the formulas: ##STR1## wherein R.sub.1 is a hydrogen atom or a methyl group, R.sub.2 and R.sub.3 are each a lower alkyl group, R.sub.4 is a hydrogen atom, a lower alkyl group, an aryl group, a hydroxy(lower)alkyl group, a benzyl group or a group of the formula: --CH.sub.2 COO(CH.sub.2).sub.m CH.sub.3 (m being an integer of 0 or 1), R.sub.5 .crclbar. is a group of either one of the formulas: --(CH.sub.2).sub.2 COO.crclbar. and --(CH.sub.2).sub.3 SO.sub.3 .crclbar., X is a halogen atom or an acid residue, Y is --O-- or --NH-- and n is an integer of 1 to 4, a process which comprises initiating the polymerization of the monomeric component (A) with or without a portion of the monomeric component (B) in an aqueous medium containing an organic solvent selected from the group consisting of acetone, acetonitrile, t-butanol, tetrahydrofuran and dioxane at a concentration of about 15 to 70% by weight until the polymerization proceeds to a certain extent and then continuing polymerization while adding the remaining portion of the monomeric component (B) thereto under the occasional supplementation of a water-miscible organic solvent thereto so as to keep an appropriate viscosity of the reaction system to produce the high polymer in a high yield with ease.

    摘要翻译： 在制备（A）丙烯酰胺和甲基丙烯酰胺中的至少一种的水溶性阳离子高分子和（B）下式之一的铵型单体中的至少一种：其中 R1是氢原子或甲基，R2和R3各自是低级烷基，R4是氢原子，低级烷基，芳基，羟基（低级）烷基，苄基或一个 式中：-CH 2 COO（CH 2）mCH 3（m为0或1的整数），R 5（ - ）是以下基团之一： - （CH 2）2 COO（ - ）和 - （CH 2）3 SO 3（ - ），X是卤素原子或酸残基，Y是-O-或-NH-，n是1〜4的整数，包括在有或没有一部分的情况下引发单体成分（A）的聚合的方法 的单体组分（B）在含有选自丙酮，乙腈，叔丁醇，四氢呋喃和二恶烷的有机溶剂的水性介质中，浓度为约15至70重量％，直到 聚合进行到一定程度，然后持续聚合，同时在偶尔添加水混溶性有机溶剂的同时向其中加入剩余部分的单体组分（B），以保持反应体系的适当粘度以产生高 聚合物以高产率容易地进行。

    Preparation of water-soluble high polymers
    2.
    发明授权
    Preparation of water-soluble high polymers 失效
    水溶性聚合物的制备

    公开(公告)号：US4075183A

    公开(公告)日：1978-02-21

    申请号：US642185

    申请日：1975-12-18

    申请人： Shigenao Kawakami ,  Tatsumi Shibata ,  Shin-ichi Isaoka ,  Tutomu Shintani

    发明人： Shigenao Kawakami ,  Tatsumi Shibata ,  Shin-ichi Isaoka ,  Tutomu Shintani

    IPC分类号： C08F220/56 ,  C08F28/00 ,  C08F2/00 ,  C08F20/70 ,  C08G75/00

    CPC分类号： C08F220/56 ,  Y10S526/923

    摘要： In the production of a water-soluble, cationic high polymer of (A) at least one of acrylamide and methacrylamide and (B) at least one of ammonium type monomers of either one of the formulas: ##STR1## wherein R.sub.1 is a hydrogen atom or a methyl group, R.sub.2 and R.sub.3 are each a lower alkyl group, R.sub.4 is a hydrogen atom, a lower alkyl group, an aryl group, a hydroxy(lower)alkyl group, a benzyl group or a group of the formula: --CH.sub.2 COO(CH.sub.2).sub.m CH.sub.3 (m being an integer of 0 or 1), R.sub.5.sup.- is a group of either one of the formulas: --(CH.sub.2).sub.2 COO.sup.- and -(CH.sub.2).sub.3 SO.sub.3.sup.-, X is a halogen atom or an acid residue, Y is -O- or --NH-- and n is an integer of 1 to 4, a process which comprises initiating the polymerization of the monomeric component (A) with or without a portion of the monomeric component (B) in an aqueous medium containing an organic solvent selected from the group consisting of acetone, acetonitrile, t-butanol, tetrahydrofuran and dioxane at a concentration of about 15 to 70 % by weight until the polymerization proceeds to a certain extent and then continuing the polymerization while adding the remaining portion of the monomeric component (B) thereto under the occasional supplementation of a water-miscible organic solvent thereto so as to keep an appropriate viscosity of the reaction system to produce the high polymer in a high yield with ease.