Homogeneous polyepoxide-polyanhydride compositions

Details Homogeneous polyepoxide-polyanhydride compositions Homogeneous polyepoxide-polyanhydride compositions

1975-06-26

1977-04-12

Wong, Jr., Harry

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 4228, 260836, 260837R, 260837PV, C08K 714, C08L 6300, C08L 6302

Patent

active

040174530

ABSTRACT:
A homogeneous mixture of a polyanhydride and a polyepoxide is prepared by the copolymerization of an olefinically unsaturated monomer capable of polymerization by free-radical means with an olefinically unsaturated monoanhydride and an olefinically saturated polyanhydride in the presence of a polyepoxide and an anhydride accelerator without substantial anhydride-epoxide cross-linking. As an example, reinforcing glass fibers are impregnated with a solution of styrene, maleic anhydride, stryene-maleic anhydride copolymer, a diglycidyl ether of bisphenol A and 1-methylimidazole and the resin is thickened in situ by copolymerization of the styrene, maleic anhydride and styrene-maleic anhydride copolymer to form a moldable, homogeneous mixture of styrene-maleic anhydride copolymer, diglycidyl ether of bisphenol A, 1-methylimidazole and reinforcing glass fibers.

REFERENCES:
patent: 3099638 (1963-07-01), Foster
patent: 3637579 (1972-01-01), Barie
patent: 3657196 (1972-04-01), Foster
patent: 3703501 (1972-11-01), McCartney
patent: 3732332 (1973-05-01), Curtis

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