PRODUCTION OF HEAT-RESISTANT RESIN COMPOSITION
PURPOSE:To obtain the subject composition of a one-pack type having an excellent shelf life, a low viscosity and a long pot life by reacting a bismaleimide compound with a normally liquid epoxy resin by heating and adding a plurality of specified compounds to the reaction mixture. CONSTITUTION:A bis...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | PURPOSE:To obtain the subject composition of a one-pack type having an excellent shelf life, a low viscosity and a long pot life by reacting a bismaleimide compound with a normally liquid epoxy resin by heating and adding a plurality of specified compounds to the reaction mixture. CONSTITUTION:A bismaleimide compound (e.g. N,N'-4,4,- diphenylmethanebismaleimide) is reacted with a normally liquid epoxy resin (e.g. bisphenol F epoxy resin) by heating at 130 to 190 deg.C and the product is cooled to 100 deg.C. A normally liquid acid anhydride (e.g. monomethyltetrahydrophthalic anhydride, is added to the cooled mixture, and the resulting mixture is further mixed with a peroxide (e.g. dicumyl peroxide) and/or a latent cure accelerator (e.g. HX-3742, a product of Asahi Kasei; at 70 deg.C or below. |
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