Patent ID: 7666938
Filing Date: 2010-02-23
Classification: C08G,C09J,Y10T

Abstract:
1. A heat curable composition comprising: (a) a benzoxazine component comprising one or more of wherein o is 1-4, X is selected from the group consisting of the group consisting of a direct bond (when o is 2), alkyl (when o is 1), alkylene (when o is 2-4), carbonyl (when o is 2), thiol (when o is 1), thioether (when o is 2), sulfoxide (when o is 2), and sulfone (when o is 2), R 1 is selected from the group consisting of hydrogen, alkyl, and aryl, and R 4 is selected from hydrogen, halogen, alkyl, and alkenyl, or wherein p is 1-4, Y is selected from the group consisting of biphenyl (when p is 2), diphenyl methane (when p is 2) and derivatives thereof, diphenyl isopropane (when p is 2), diphenyl sulfide (when p is 2), diphenyl sulfoxide (when p is 2), diphenyl sulfone (when p is 2), and diphenyl kerone (when p is 2), and R 4 is selected from the group consisting of hydrogen, halogen, alkyl and alkenyl; and (b) a silica nanoparticle reinforced epoxy resin component, wherein said epoxy resin is selected from the group consisting of a cycloaliphatic epoxy resin matrix, a bisphenol A epoxy resin matrix, and a bisphenol F epoxy resin matrix; wherein said silica nanoparticle reinforced epoxy resin component is present in an amount of from 3 to 30% by weight of the total composition.