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21. 发明授权

US4308189A Cationic polymer emulsion 失效
标题翻译：阳离子聚合物乳液
公开(公告)号：US4308189A
公开(公告)日：1981-12-29
申请号：US191665
申请日：1980-09-29
申请人： Tohei Moritani , Takeshi Moritani , Junnosuke Yamauchi , Yoshinari Tanaka , Makoto Shiraishi
发明人： Tohei Moritani , Takeshi Moritani , Junnosuke Yamauchi , Yoshinari Tanaka , Makoto Shiraishi
IPC分类号： C08F2/28 , C08F261/04
CPC分类号： C08F2/28
摘要： Cationic emulsions are obtained by the emulsion polymerization or copolymerization of ethylenically unsaturated monomers such as vinyl acetate, etc. in the presence of a cationic group-modified polyvinyl alcohol (PVA). Typical cationic group-modified PVA are the modified PVA's which contain a copolymeric unit having one of the following formulas: ##STR1## wherein R.sup.1 is H or lower alkyl; B is ##STR2## R.sup.2, R.sup.3 and R.sup.4 are each lower alkyl (substituted or unsubstituted) and X is an anion forming a salt with the ammonium N; and A is an inert bivalent organic group linking the N atom in B to the N atom in the amide group; ##STR3## wherein, in formulas (II) and (III), R.sup.5, R.sup.6 and R.sup.7 are each H, lower alkyl or phenyl; R.sup.8 is lower alkyl; and Y is an anion forming a salt with the imidazolinium N atom. Particularly desirable are the cationic group-modified PVA's containing the copolymeric unit (I) wherein A is ##STR4## R.sup.2, R.sup.3 and R.sup.4 each is methyl and X is chlorine, or wherein R.sup.1 is methyl, A is --CH.sub.2 --CH.sub.2 --CH.sub.2 --, R.sup.2, R.sup.3 and R.sup.4 in B are each methyl and X is chlorine, and cationic group-modified PVA's containing the copolymeric unit (II) or (III) wherein R.sup.5 and R.sup.8 are each methyl and R.sup.6 and R.sup.7 are each hydrogen. The polymers of these cationic emulsion have superior binding properties to substrates such as pulp fibers, textile fibers, glass, and the like.
摘要翻译：通过在阳离子基团改性的聚乙烯醇（PVA）的存在下，通过烯属不饱和单体如乙酸乙烯酯等的乳液聚合或共聚获得阳离子乳液。典型的阳离子基团改性的PVA是包含具有下式之一的共聚单元的改性PVA：其中R 1是H或低级烷基; B是R 2，R 3和R 4各自是低级烷基（取代或未取代的），X是与铵形成盐的阴离子; A是将B中的N原子与酰胺基中的N原子连接的惰性二价有机基团; （II）其中，在式（II）和（III）中，R 5，R 6和R 7各自为H，低级烷基或苯基; R8是低级烷基; Y是与咪唑啉鎓N原子形成盐的阴离子。特别优选的是含有共聚单元（I）的阳离子基团改性的PVA，其中A为R 2，R 3和R 4各自为甲基，X为氯，或其中R 1为甲基，A为-CH 2 -CH 2 -CH 2 - ，B中的R 2，R 3和R 4各自为甲基，X为氯，和含有共聚单元（II）或（III）的阳离子基团改性的PVA，其中R 5和R 8各自为甲基，R 6和R 7各自为氢。这些阳离子乳液的聚合物对纸浆纤维，纺织纤维，玻璃等基材具有优异的粘合性。

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