C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
204/91.35
C08F 2/46 (2006.01) C08J 3/28 (2006.01) C08J 5/24 (2006.01)
Patent
CA 1082127
"REINFORCE COMPOSITES" Abstract of the Disclosure A method for the preparation of prepregs comprises i) impregnating a fibrous reinforcing material with a liquid composition containing an epoxide resin and a photopolymerisation catalyst therefor, and with a thermally-activated crosslinking agent for epoxide resins and ii) exposing the impregnated material to actinic radiation such that the composition solidifies due to photopolymerisation of the epoxide resin through epoxide groups thereof but which resin remains substantially in the thermosettable state. The prepreg, optionally after shaping and/or stacking, is heated to cure the epoxide resin.
272021
Ag Ciba-Geigy
Fetherstonhaugh & Co.
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