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With an acidic resin, a carboxyl group, the epoxy ring opening, and then with a polyurethane adhesive in the isocyanate-reactive. You can also epoxy resin dissolved in ethyl acetate, phosphoric acid heated reaction, the adduct added to the polyurethane adhesive; the beginning of sticky glue; thermal and hydrolytic stability, etc. can also be used to improve the 0 r reaction of an alcohol amine or amine polyol, the presence of tertiary nitrogen atoms in the adduct, may accelerate the NCO reaction. Domestic propylene Manufacturer: The Chinese epoxy resin manufacturers have more than a hundred, but apart from a handful of Yueyang and Wuxi, the mostly small scale. As the domestic epoxy resin plant mostly small-scale, single species, grades, obsolete equipment, low quality resin; in the case of Shell, Dow, Ciba and several Japanese companies are stepping up to the Chinese consumer market penetration epoxy preemption, domestic manufacturers We are facing extremely serious challenges.