UNSATURATED POLYCARBONATE DIOL, PROCEDURE TO OBTAIN SUCH POLYCARBONATE DIOL AND ITS USE

摘要

An unsaturated polycarbonate diol (A) comprising terminal hydroxyl groups, at least one repeating unit of formula (Ia) and at least one repeating unit selected from units of formula (Ib) and units of formula (II), wherein R 1a is selected from the group consisting of C 2 -C 20 acyclic alkylene group, C 2 -C 20 ether group and C 3 -C 20 ester group, R 1b represents and C 2 -C 20 acyclic alkenylene group, and R 2 represents a C 2 -C 20 acyclic alkenylene group; the unsaturated polycarbonate diol (A) comprising at least one unsaturated carbon-carbon bond; and procedures to obtain such an unsaturated polycarbonate diol (A):