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Epoxy resin(s) with anhydride and polybutadiene-maleic anhydride adduct
Epoxy resin(s) with anhydride and polybutadiene-maleic anhydride adduct
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机译:带有酸酐和聚丁二烯-马来酸酐加合物的环氧树脂
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摘要
Improved toughened epoxy resin systems having glass transition temperatures of 250 C. to 350 C. are prepared by carefully curing a blend of epoxy resin or resins, all of which have an epoxy functionality of at least 2 with the mixture having an epoxy functionality greater than 2, an anhydride hardener mixture comprising a bicycloalkenedicarboxylic acid anhydride, a polybutadiene-maleic anhydride adduct, and optionally, a polybutadiene, a bismaleimide, or benzophenone tetracarboxylic acid dianhydride, preferably using a dialkyl imidazole-2-thione accelerator.
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