Oligomer or polymer with carbonate segment chemical structure
An oligomer or polymer with carbonate segment chemical structure, whose structure is expressed by the formula wherein R 1 is a functional group derived from a polyol, a polyester polyol or a polyether polyol. The oligomer or polymer with carbonate segment chemical structure is applicable to automobile manufacturing, wires & cables, and medical equipment.
1. An oligomer or polymer with carbonate segment chemical structure, whose structure is expressed by formula III or IV,
wherein R 1 and R 2 are functional groups derived from a polyol, a polyester polyol or a polyether polyol,
R 3 is branched or linear C 1-6 alkylidene or
wherein p and q are integers ranging from 3 to 70, and
a, b, c, d, e, f, x and m are positive integers.
2. The oligomer or polymer with carbonate segment chemical structure according to claim 1 , wherein m is an integer ranging from 3 to 50.
3. The oligomer or polymer with carbonate segment chemical structure according to claim 1 , wherein R 1 and R 2 are each substituted or unsubstituted, branched or linear, C 1-6 alkylidene or substituted or unsubstituted, branched or linear, C 1-6 alkylidene interrupted by —O— or
4. The oligomer or polymer with carbonate segment chemical structure according to claim 1 , wherein, in formula III, x/(x+a+b+c+d) ranges from 0.500 to 0.995, a+b/(x+a+b+c+d) is greater than or equal to 0 but less than 0.500, c+d/(x+a+b+c+d) is greater than 0 but less than or equal to 0.500, wherein, in formula IV, x/(x+a+b+c+d+e+f) ranges from 0.500 to 0.995, a+b/(x+a+b+c+d+e+f) is greater than or equal to 0 and less than 0.500, c+d/(x+a+b+c+d+e+f) is greater than 0 but less than or equal to 0.500, and e+f/(x+a+b+c+d+e+f) is greater than 0 but less than or equal to 0.500.