Patent ID: 11345777

Abstract:
Provided are an epoxy resin composition, a prepreg, a resin sheet, and a carbon fiber-reinforced composite material, which have high heat resistance, a high elastic modulus, low water absorption, and excellent flame resistance. This epoxy resin is a para-cresol novolac epoxy resin represented by General formula (1), in which a content ratio of components represented by n=1 as measured by gel permeation chromatography is less than 10% by area, and a content ratio of components represented by n=2 as measured by gel permeation chromatography is at least 1% by area and less than 40% by area.(In the formula, plural R's each independently represent a C1-6 alkyl group, n represents a real number of 1 to 10, and G represents a substituted or unsubstituted glycidyl group.)