TO provide a silyl group-containing polymer which can be cured quickly and strongly, and from which a cured product excellent in antifouling properties and weather resistance while maintaining favorable rubber elasticity can be obtained, and its production process.
The silyl group-containing polymer of the present invention is a silyl group-containing polymer represented by the following formula (1):
wherein R1 is a group having a hydroxyl group(s) removed from a monohydroxy or polyhydroxy compound having t hydroxyl group(s) in its molecule, R2 is a bivalent organic group, R3 is a C1-20 monovalent organic group which may have a substituent, X is a hydroxyl group or a hydrolysable group, Y is a bivalent group represented by the following formula (A) or a bivalent group represented by the following formula (B), "a" is an integer of from 1 to 3, r is an integer of from 1 to 1,000, and t is an integer of from 1 to 8, provided that when the silyl group-containing polymer represented by the formula (1) has a plurality of Y's in its molecule, the plurality of Y's may be the same or different, and when t is from 2 to 8, a plurality of monovalent groups bonded to R1 may be the same or different:
-OR5- (B)
in the formula (A), R4 is a C2-8 alkylene group, and in the formula (B), R5 is a C2-4 alkylene group.
提供一种可快速强力固化的含
硅烷基聚合物,并可从中获得防污性能和耐候性能极佳的固化产品,同时保持良好的橡胶弹性及其生产工艺。
本发明的含
硅烷基聚合物是由下式(1)表示的含
硅烷基聚合物:
其中 R1 是一个从其分子中有 t 个羟基的单羟基或多羟基化合物中除去羟基的基团,R2 是一个二价有机基团,R3 是一个 C1-20 的一价有机基团,该基团可以有一个取代基,X 是一个羟基或一个可
水解基团,Y 是一个由下式(A)表示的二价基团或一个由下式(B)表示的二价基团、a "为 1 至 3 的整数,r 为 1 至 1,000 的整数,t 为 1 至 8 的整数,条件是当式(1)所代表的含
硅烷基聚合物分子中有多个 Y 时,多个 Y 可以相同或不同,当 t 为 2 至 8 时,与 R1 键合的多个单价基团可以相同或不同:
-OR5-(B)
式(A)中,R4 为 C2-8 亚烷基,式(B)中,R5 为 C2-4 亚烷基。