Patent ID: 8742018
Filing Date: 2014-06-03
Classification: C08G,C08L

Abstract:
1. A curable composition comprising an epoxy resin mixture, wherein the epoxy resin mixture comprises 70 weight percent to 100 weight percent of cycloaliphatic epoxy resin based on a total weight of the epoxy resin mixture; a cycloaliphatic anhydride hardener; greater than 10 to 30 weight percent of a toughening agent based on a total weight of the curable composition; and a catalyst; wherein the curable composition when cured forms a reaction product, the resulting reaction product having (i) a glass transition temperature greater than or equal to about 210° C. as measured by differential scanning calorimetry or dynamic mechanical thermal analysis; (ii) a tensile modulus of at least about 260000 psi; (iii) an elongation at break of at least about 5 percent; and (iv) a peak stress of at least about 7000 psi.