Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1991-05-31
1993-12-07
Lesmes, George F.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428292, 428297, 428302, 428327, 428413, 523440, 524495, 525107, B32B 522, B32B 2738, C08L 6300, C08K 722
Patent
active
052682234
ABSTRACT:
Composites comprising structural fiber and matrix resin formulated from epoxys selected from the group consisting of polyglycidyl ethers of polycyclic bridged hydroxy-substituted polyaromatic compounds and N,N,N',N'-tetraglycidyl-bis(4-amino- 3-ethylphenyl)methane with from about 6 to about 150 pbw, per hundred parts by weight of the epoxy resin components, of a solid aromatic diamine hardener, toughened with porous rigid resin particles having a spheroidal spongy structure. The resulting composites exhibit surprising improvement in interlaminar strength characteristics as measured by G.sub.IC.
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Hoffman Richard E.
Newman-Evans Richard H.
Qureshi Shahid P.
Amoco Corporation
Brown Christopher
Hensley Stephen L.
Lesmes George F.
Schlott Richard J.
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