Patent ID: 7078447
Filing Date: 2006-07-18
Classification: A61L,A61M,C08G,C08K,C08L

Abstract:
1. An irradiated article comprising: a block copolyarylestercarbonate and an ionizing radiation stabilizing additive, wherein said copolyarylestercarbonate comprises an organic carbonate block and at least one arylate block, said arylate block comprising arylate structural units derived from: (a) a 1,3-dihydroxybenzene, and (b) at least one aromatic dicarboxylic acid moiety, wherein the arylate block has a weight averaged molecular weight of between 2000 to about 20,000 and wherein the ionizing radiation stable additive is an aliphatic alcohol or a diaryl sulfide, and wherein the irradiated article has a yellowness shift of less than 40 yellowness index units after 75 kGY of ionizing radiation.