Back to results
US 4,608,404 AGranted
Epoxy compositions containing oligomeric diamine hardeners and high strength composites therefrom
AssigneeUnion Carbide Corporation
InventorsHugh C. Gardner, George L. Brode, Robert J. Cotter
Life of this patent
Estimating the term…
Abstract
Described herein are compositions which contain a specific group of oligomeric diamine hardeners and epoxy compounds which when combined with structural fibers produce composites which have improved tensile properties, high compressive strengths, and improved impact resistance. These compositions also exhibit low moisture absorption.
Claims40
A composition comprising:
- (a) a diamine hardener represented by the following general formulas:
- ##STR18## or mixtures thereof, wherein X is O, S, SO or SO.sub.2, Y is O or S, A is the residuum of a dihalobenzenoid compound, R is the residuum of a dihydric phenol and a is 0.05 to 20, and
- (b) an epoxy resin containing two or more 1,2-epoxide groups per molecule.
A composition comprising:
- (a) a diamine hardener represented by the following general formulas:
- ##STR28## or mixtures thereof, wherein X is O, S, SO or SO.sub.2, Y is O or S, A is the residuum of a dihalobenzenoid compound, R is the residuum of a dihydric phenol, and a is 0.05 to 20 and
- (b) bis(2,3-epoxycyclopentyl)ether.
A prepreg comprising:
- (a) a diamine hardener represented by the following general formulas:
- ##STR29## or mixtures thereof, wherein X is O, S, SO or SO.sub.2, Y is O or S, A is the residuum of a dihalobenzenoid compound, R is the residuum of a dihydric phenol, and a is 0.05 to 20 and
- (b) an epoxy resin containing two or more 1,2-epoxide groups per molecule and
- (c) a structural fiber.
1 more element
A composite comprising:
- (i) a matrix resin comprising
- (a) a diamine hardener represented by the following formulas:
- ##STR30## or mixtures thereof, wherein X is O, S, SO or SO.sub.2, Y is O or S, A is the residuum of a dihalobenzenoid compound, R is the residuum of a dihydric phenol, and a is 0.05 to 20 and
- (b) an epoxy resin containing two or more 1,2-epoxide groups per molecule, and
- (c) a structural fiber.
2 more elements
Dependencies are inferred from the claim text.