Aqueous emulsions, methods of making the same and impregnated ro

Details Aqueous emulsions, methods of making the same and impregnated ro Aqueous emulsions, methods of making the same and impregnated ro

1979-03-19

1980-09-16

Pertilla, Theodore E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

428378, 428417, 525396, 525398, 525523, 525906, C08L 6300

Patent

active

042229189

ABSTRACT:
Aqueous impregnating emulsions for the impregnation of fibrous rovings are provided in which water has emulsified therein particles of epoxy resin in compatible admixture with thermoplastic resin, and a curing agent for the epoxy resin is dispersed in the emulsion, the curing agent being nonreactive under ambient conditions, such as dicyandiamide. Polysulfone resins are preferably used by dissolving them in methylene chloride and then evaporating this solvent after the epoxy resin has been dissolved in. Polycarboxylic acid emulsifying agents provide superior properties in the cured product.

REFERENCES:
patent: 2872427 (1959-02-01), Schroeder
patent: 3819472 (1974-06-01), Vasta

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