Patent ID: 8722770
Filing Date: 2014-05-13
Classification: C08F,C08K,C08L

Abstract:
1. A cured unsaturated polyester resin or vinyl ester resin composition, characterized in that wherein the unsaturated polyester resin or vinyl ester resin composition comprises an unsaturated polyester resin or vinyl ester resin and a) a copper compound, b) an acetoacetamide compound having the following formula: wherein, R a ring may be present between R R the molar ratio between the copper compound and the acetoacetamide compound is from 10:1 to 1:500; and wherein the resin is cured with a peroxide and the resin composition contains less than 0.01 mmol cobalt per kg primary resin system and less than 0.01 mmol titanium per kg primary resin system, and wherein the resin composition also comprises a base which is either an organic base with pKa≧10 that is selected from amines, or an alkaline metal or earth alkaline metal compound, wherein the base is present in an amount of from 0.001 to 2000 mmol/kg of primary resin system.