Resinous materials are produced in the substantial absence of a solvent by feeding to an extruder operated at a temperature sufficient to cause a reaction between the reactants (A) at least one material having an average of more than one vicinal epoxy group per molecule, (B) at least one material having an average of more than one group reactive with component (A) such as hydroxyl, thiol, carboxyl, isocyanate, thioisocyanate or secondary amine groups or a combination of such groups per molecule or a material having only one primary amine group per molecule, (C) at least one catalyst for promoting a reaction between components (A) and (B) if a catalyst is required to effect the reaction between components (A) and (B), and (D) optionally one or more chain terminators and thereafter recovering a resinous material resulting from the reaction between components (A) and (B) from said extruder.
This process is useful in preparing advanced epoxy resins and phenoxy thermoplastic resins.
树脂材料是在基本无溶剂的情况下生产的,生产方法是向挤出机喂料,挤出机 的温度足以使反应物(A) 至少一种材料,其每个分子平均具有一个以上的环氧基;(B) 至少一种材料,其每个分子平均具有一个以上与组分(A)反应的基团,如羟基、
硫醇、羧基、
异氰酸酯、
硫代
异氰酸酯或仲胺基团或这些基团的组合;或一种材料,其每个分子仅具有一个
伯胺基团、(C) 至少一种催化剂,用于促进组分 (A) 和 (B) 之间的反应(如果需要催化剂来实现组分 (A) 和 (B) 之间的反应),以及 (D) 可选的一种或多种链
终止剂,然后从所述挤压机中回收由组分 (A) 和 (B) 反应产生的
树脂材料。
该工艺可用于制备高级环氧
树脂和苯氧基热塑性
树脂。