Patent ID: 8586649
Filing Date: 2013-11-19
Classification: C08J,C08K,C08L

Abstract:
1. A composition comprising or produced from poly(hydroxyalkanoic acid), a nucleator, a core shell polymer, and optionally an ethylene copolymer wherein the poly(hydroxyalkanoic acid) comprises a poly(lactic acid) having a melting point of from 145° C. to 155° C.; the poly(lactic acid) comprises monomers derived from L-lactic acid and D-lactic acid; a sample of the composition, when heated in a Differential Scanning Calorimeter from ambient temperature to 25° C. above its melting point at about 10° C./minute, develops >1 J/g in the crystallization exotherm; the nucleator is a carboxylic acid and is present in the composition from 0.5 to about 15% based on the weight of the composition; and the carboxylic acid includes aromatic carboxylic acid, aliphatic carboxylic acid, polycarboxylic acid, aliphatic hydroxycarboxylic acid, or combinations of two or more thereof; and if the composition comprises the ethylene copolymer, the carboxylic acid is optionally in the form of an alkyl ester, alkyl amide, or combinations thereof; and the core/shell polymer does not comprise a vinyl aromatic comonomer and has a refractive index not greater than 1.5; the core is alkyl acrylate polymer.