Patent ID: 6410127
Filing Date: 2002-06-25
Classification: C08G,C08L,Y10T

Abstract:
An epoxy resin composition comprising a main agent and a curing agent, the main agent comprising an aromatic epoxy resin having at least a di-functionality and the curing agent comprising an aromatic amine compound and/or an alicyclic amine compound, wherein 5 minutes after the main agent and the curing agent are mixed at 25Â° C., the epoxy resin composition shows a viscosity at 25Â° C. in a range of from about 1 to 1500 mPa sec, and Tc, tc, and Tg satisfy the following equation:Tg&gE;Tc+20âˆ’kÃ—(Tcâˆ’90)â€ƒâ€ƒ(1) wherein k=0 when 60&lE;Tc<90 and k=0.35 when 90&lE;Tc&lE;200; wherein Tc is a highest temperature (Â°C.) during the curing process and said Tc satisfies the following equation: 60&lE;Tc&lE;200; tc is a retention time (min) at the highest temperature and said tc satisfies the following equation: 1&lE;tc&lE;120 andTg is a glass transition temperature of the epoxy resin composition after a lapse of tc (min) at Tc (Â°C.).