Fortifiers for anhydride-cured epoxy resins

Details Fortifiers for anhydride-cured epoxy resins Fortifiers for anhydride-cured epoxy resins

C - Chemistry, Metallurgy

08

G

400/112, 402/273

C08G 59/42 (2006.01) C08G 59/48 (2006.01)

Patent

CA 1315430

TITLE ANHYDRIDE-BASED FORTIFIERS FOR ANHYDRIDE-CURED EPOXY RESINS INVENTORS Andrew Garton Paul Douglas McLean ABSTRACT OF THE DISCLOSURE An anhydride-cured epoxy resin (epoxy resin + anhydride curing agent + catalyst) may be fortified (i.e. increased in strength and modulus without being made brittle) by the addition of a carboxylic acid and the reaction product of a carboxylic acid anhydride and a substituted aromatic amine. Strengths as high as 125 MPa and moduli as high as 3500 MPa have been attained, as well as elongations up to 6% and an increase in the ability of the plastic to yield before fracture (ductility), compared to 80 MPa strength, 3000 MPa modulus and 2.4% elongation for the unfortified system (strengths and moduli are tensile).

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