公开(公告)号：US5618879A

公开(公告)日：1997-04-08

申请号：US621320

申请日：1996-03-25

申请人： Edith Cavivenc ,  Joel Richard

发明人： Edith Cavivenc ,  Joel Richard

IPC分类号： C08F283/12 ,  C08F290/14 ,  C08L83/10 ,  C09D151/08 ,  C09D183/10 ,  C08L83/00

CPC分类号： C08L83/10 ,  C08F283/124 ,  C08F290/148 ,  C09D151/08 ,  C09D183/10

摘要： Stable reactive aqueous dispersions of functional graft polyorganosiloxanes, well suited for formulation into curable silicone compositions useful in the production of release- and other coatings and paints, comprise the polymerizate of at least one ethylenically unsaturated monomer with a functional polyorganosiloxane which comprises identical or different recurring structural units of formula (I):R.sub.a Y.sub.b X.sub.c SiO.sub.(4-a-b-c)/2 (I)in which the radicals R, which may be identical or different, are each a C.sub.1 -C.sub.18 alkyl radical, a C.sub.2 -C.sub.20 alkenyl radical, or a C.sub.6 -C.sub.12 aryl or aralkyl radical, or halogen-substituted such radical; the radicals X, which may be identical or different, are each a hydrogen atom or a reactive functional group bonded to a silicon atom via an Si-C or Si-O-C linkage; the radicals Y, which may be identical or different, are each an ethylenically unsaturated hydrocarbon radical optionally comprising one or more of the heteroelements O and/or N, and bonded to a silicon atom of the structural unit of formula (I) via an Si-C linkage and reactive with said at least one ethylenically unsaturated monomer; a, b and c are each equal to 0, 1, 2 or 3; and a+b+c=0, 1, 2 or 3; with the proviso that the number of SiO.sub.4/2 units is less than 30 mol % and the number of structural units of formula (I) in which the silicon atom is substituted by a functional group X and/or a radical Y is such that the polyorganosiloxane comprises (i) at least 5 milliequivalents, preferably from 10 to 500 milliequivalents, of X functional groups per 100 grams of polyorganosiloxane of formula (I) and (ii) at least 5 milliequivalents, preferably from 10 to 500 milliequivalents, of Y radicals per 100 grams of polyorganosiloxane of formula (I).

摘要翻译： 功能性接枝聚有机硅氧烷的稳定反应性水性分散体，非常适合配制成可用于制备脱模剂和其它涂料和涂料的可固化硅氧烷组合物，包括至少一种烯键式不饱和单体与官能聚有机硅氧烷的聚合反应，该官能聚有机硅氧烷包含相同或不同的重复 式（I）的结构单元：RaYbXcSiO（4-abc）/ 2（I）其中可以相同或不同的基团R各自为C 1 -C 18烷基，C 2 -C 20烯基或 C6-C12芳基或芳烷基，或卤素取代的这种基团; 基团X可以相同或不同，分别为氢原子或通过Si-C或Si-O-C键与硅原子键合的反应性官能团; 可以相同或不同的基团Y各自为任选包含一个或多个杂原子O和/或N的烯键式不饱和烃基，并且通过Si（I）键合到式（I）的结构单元的硅原子上 -C键并与所述至少一种烯属不饱和单体反应; a，b和c各自等于0,1,2或3; 和a + b + c = 0,1,2或3; 条件是SiO 4/2单元的数量小于30mol％，硅原子被官能团X和/或基团Y取代的式（I）的结构单元的数目使得 聚有机硅氧烷包括（i）至少5毫当量，优选10至500毫当量的X官能团，每100克式（I）的聚有机硅氧烷和（ii）至少5毫当量，优选10至500毫当量的Y基团 每100克式（I）的聚有机硅氧烷。