Patent ID: 8716368
Filing Date: 2014-05-06
Classification: C08K,C08L

Abstract:
1. A cured unsaturated polyester resin or vinyl ester resin composition comprising: (i) a polymer containing reactive unsaturations as a resin, and (ii) between 0.001 and 25% by weight of a 1,3-dioxo-component, and (iii) optionally a reactive diluent, an inhibitor, a stabilizer or combinations thereof; wherein (a) the resin composition is cured with a peroxide component; (b) the resin in the resin composition has an acid value≦10; and (c) the resin composition contains a base which is either (i) selected from the group consisting of organic or inorganic oxides, hydroxides, alkoxides and carboxylates for each of which the cation has a redox potential of a metal of at most −1.5 V and the metal is an alkaline or earth alkaline metal, or of ammonium ions; or is (ii) selected from the group consisting of aliphatic amines, wherein the base is present in an amount of from 0.001 to 2,000 mmol/kg of basic resin system, and wherein the 1,3-dioxo-component is either (1) a 1,3 dioxo-compound according to formula 1 in which, independently from each other, R (2) an oligomer or polymer of the compound of formula 1, wherein the oligomer or polymer contains at least one 1,3-dioxo group.