Patent ID: 9487625
Filing Date: 2016-11-08
CPC Classification: C08G,C08K,C08L,C09D,Y02P

Claim Text:
1. A poly(butylene terephthalate-co-adipate) copolymer having a melt temperature from 105 to 125° C., wherein the copolymer comprises a polyester component residue selected from a residue derived from a terephthalic-containing polyester homopolymer, a residue derived from a terephthalic-containing polyester copolymer, and combinations thereof, and further comprising a polyester residue component; a quencher residue; and from 0.05 to 5 weight % based on total weight of poly(butylene terephthalate-co-adipate) copolymer of a residue of a diisocyanate chain extender selected from the group consisting of tolylene 2,4-diisocyanate, tolylene 2,6-diisocyanate, 2,4′-diphenylmethane diisocyanate, naphthylene-1,5-diisocyanate, xylylene diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, and methylenebis (2-isocyanatocyclohexane); wherein the copolymer has wherein the poly(butylene terephthalate-co-adipate) copolymer exhibits an L* value of at least 75.