Patent ID: 9382386
Filing Date: 2016-07-05
CPC Classification: C08G,C08J,C08L

Claim Text:
1. A lactide copolymer comprising: two or more block copolymer repeating units in which hard segments of polylactide repeating units are bound to both ends of soft segments of polyether polyol repeating units, the block copolymer repeating unit being represented by Formula 1, wherein the block copolymer repeating units are linked with each other via a urethane linking group induced from a polyvalent isocyanate compound having more than 2 to less than 3 equivalents of an isocyanate group per molecule, and the polyether polyol repeating unit has a number average molecular weight (Mn) of 1000 to 10000: and wherein in Formula 1, D is a C2 to C10 linear or branched alkylene group, x is each independently an integer of 30 to 500, and n is an integer of 30 to 1000.