Disclosed are a polysaccharide derivative having the structure: ##STR1## and a polysaccharide graft polymer having the structure: Sacch-O-(G).sub.m -(M)-.sub.n, wherein Sacch- is a polysaccharide; m is zero or one; G is the residue of a polymerizable, unsaturated monomer which is bonded to the polysaccharide in an ether or ester linkage; n is greater than one; M is the residue of one or more polymerizable, unsaturated, monomer(s), at least one of which is a siloxane-containing monomer, which have been grafted to the polysaccharide by free radical polymerization; R is an organic group which is bonded to the polysaccharide by an ether or ester linkage and to the silicon by a carbon-silicon linkage; R.sub.1 is a straight or branched C.sub.1 -C.sub.6 alkyl or alkenyl group, or an aryl, aralkyl or alkaryl group; and R.sub.2 and R.sub.3 are, independently, straight or branched C.sub.1 -C.sub.6 alkyl or alkenyl groups, or aryl, aralkyl or alkaryl groups, or alkoxides of straight or branched C.sub.1 -C.sub.6 alkyl or alkenyl groups, or aryl, aralkyl or alkaryl groups, or alkoxides wherein R.sub.2 and R.sub.3 together form a cyclic structure of at least five members. The siloxane-containing polysaccharide derivatives and polysaccharide graft polymers are useful in glass fiber forming size compositions, in paper making and in other applications.
本发明涉及一种
多糖衍
生物,其结构如下:##
STR1##以及一种
多糖接枝
聚合物,其结构为:Sacch-O-(G).sub.m-(M).sub.n,其中Sacch-为
多糖;m为零或一;G为可聚合的不饱和单体残基,其与
多糖以醚或
酯键连接;n大于一;M为一种或多种可聚合的不饱和单体残基,其中至少有一种为含
硅氧烷单体,它们通过自由基聚合接枝到
多糖上;R为有机基团,通过醚或
酯键与
多糖连接,并通过
碳硅键与
硅连接;R.sub.1为直链或支链C.sub.1-C.sub.6烷基或
烯基基团,或芳基、芳基烷基或烷基芳基基团;R.sub.2和R.sub.3分别为直链或支链C.sub.1-C.sub.6烷基或
烯基基团,或芳基、芳基烷基或烷基芳基基团,或直链或支链C.sub.1-C.sub.6烷基或
烯基基团、芳基、芳基烷基或烷基芳基基团的烷
氧基,或其中R.sub.2和R.sub.3共同形成至少五个成员的环状结构。这些含
硅氧烷的
多糖衍
生物和
多糖接枝
聚合物在
玻璃纤维成型尺寸组成物、造纸和其他应用中有用。