Epoxy resin fortifiers based on aromatic amides
AssigneeCanadian Patents and Development Limited
InventorsPaul D. McLean, Andrew Garton, Robert F. Scott, Susan E. Gransden
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Abstract
The reaction product of (i) an aromatic amide having the amine group of the amide attached to an aromatic ring, and (ii) a mono- or di-epoxide, has been found to be a good fortifier of epoxy resins. Epoxy resins have been found to attain increased strength and modulus (yet not brittle) by compounding: (a) a resin-forming polyepoxide, (b) an amine curing agent for (a), and (c) the above fortifier; and heat curing the mixture. Strengths as high as 130-150 MPa and modulus values to as high as 5000 MPa have been achieved yet with a ductile mode of fracture.
Claims17
A fortifier for epoxy resins comprising the reaction product of
- (i) an aromatic amide of the formula ##STR4## wherein A to E are selected from hydrogen, hydroxyl, halogen, lower alkyl, halogenated lower alkyl, amino, and an alkylene-linked aromatic amide moiety;
- and X is selected from hydrogen, lower alkyl, phenyl and ##STR5##
Dependencies are inferred from the claim text.