申请人:Kodama Sai
公开号:US20050176889A1
公开(公告)日:2005-08-11
There are provided a polyalkenyl ether type polyurethane, which is excellent in flexibility, aor the like, and which has in the molecule, a structural unit represented by formula (XXX):
(wherein n represents an integer of 2 to 1000, R
1
represents substituted or unsubstituted lower alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted aryl, or substituted or unsubstituted aralkyl, and R
2
, R
3
and R
4
, which are the same or different, each represent a hydrogen atom, substituted or unsubstituted lower alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted aryl or substituted or unsubstituted aralkyl, and R
1
s, R
2
s, R
3
s, and R
4
s, when they are each present two or more in number, may be respectively the same or different), and the like.
提供了一种柔韧性极佳的聚烯醚型聚氨酯或类似产品,其分子中具有由式(XXX)表示的结构单元:
(其中 n 代表 2 至 1000 的整数,R
1
代表取代或未取代的低级烷基、取代或未取代的环烷基、取代或未取代的芳基、取代或 未取代的芳烷基,以及 R
2
, R
3
和 R
4
相同或不同,各自代表氢原子、取代或未取代的低级烷基、取代或未取代的环烷基、取代或未取代的芳基或取代或未取代的芳烷基,以及 R
1
s、R
2
s、R
3
和 R
4
s,当它们各自的数量为两个或更多时,可以分别相同或不同)等。