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