| 摘要 |
PURPOSE:To obtain a thermosetting resin composition capable of forming a coating layer resistant to discoloration with time in a state immersed in hot water and useful as a substitute for metallic part, etc., by adding a specific amount of a specific antioxidant to a thermosetting resin composition containing a thermosetting resin and a copolymerizable monomer. CONSTITUTION:This composition is produced by incorporating (A) 100 pts.wt. of a thermosetting resin composed of a thermosetting resin such as urethane acrylate resin and unsaturated polyester resin and a copolymerizable monomer such as (alpha-methyl)styrene and divinylbenzene with (B) 0.05-2.5 pts.wt. of a phosphite-based antioxidant of formula (R1 and R2 are a 5-20C alkyl), e.g. 2,2-bis(4-didodecylphosphitephenyl)propane. |
