Epoxy resin composition

Abstract

Abstract PURPOSE:To prepare the titled flame-retardant composition having long potlife at high temperature and good dispersion stability, by mixing dicyanodiamide to a bromine-containing mixture composed of an epoxy resin and a compound containing phenolic hydroxyl group. CONSTITUTION:A mixture which is liquid at normal temperature and has a specific gravity of 1.33-1.52 (at 25 deg.C) is prepared by mixing (A) an epoxy resin which is liquid at normal termerature and (B) a compound having two or more phenolic hydroxyl groups in the molecule (e.g. bisphenol A) wherein the component (A) and/or the component (B) contains a bromine-containing comThe amount of the phenolic hydroxyl group in the component (B) is 0.05- 0.5mol per 1mol of the epoxy group in the component (A). 100pts.wt. of the mixture is mixed with 1-5pts.wt. of powdery dicyanodiamide having an average particle diameter of <=50mum, and homogeneously kneaded to obtain the objective composition.

Inventors

• 👤 Hidetoshi Innami
• 👤 印南　英敏
• 👤 Seiichi Akiyama
• 👤 秋山　精一

Bibliographic Details