Method for making crosslinked resin foams from at least one dicarboxylic
acid, at least one ethylenically unsaturated dicarboxylic acid
anhydride and a polyisocyanate
    3.
    发明授权
    Method for making crosslinked resin foams from at least one dicarboxylic acid, at least one ethylenically unsaturated dicarboxylic acid anhydride and a polyisocyanate 失效
    至少一种二羧酸,至少一种烯属不饱和二羧酸酐和多异氰酸酯制造交联树脂泡沫的方法

    公开(公告)号:US4108810A

    公开(公告)日:1978-08-22

    申请号:US843015

    申请日:1977-10-17

    申请人: Ann Marie Baker

    发明人: Ann Marie Baker

    摘要: Storage-stable solid intermediate products, capable of being foamed and polymerized to cellular highly crosslinked three dimensional ethylenic polymer resin products having amic acid groups and/or cyclic imide linkages, are obtained by inter-reacting, at temperature above the melting point but below about 100.degree. C, a polyisocyanate illustrated by tolylene diisocyanate, a dicarboxylic acid illustrated by maleic or malonic acid, and an unsaturated dicarboxylic acid anhydride illustrated by maleic anhydride, subsequently adding catalyst, surfactant and water while allowing CO.sub.2 to evolve, finally allowing the reaction mixture to solidify. The stable solid, e.g. in the form of granules or powder, can subsequently be shaped, foamed and polymerized by heating to 150.degree.-300.degree. C to provide infusible, insoluble, flame-resistant, rigid cellular resin products having low apparent density.

    摘要翻译: 通过在高于熔点但在约低于熔点的温度下相互反应获得能够发泡和聚合成具有酰胺酸基团和/或环状酰亚胺键的多元高度交联的三维乙烯性聚合物树脂产品的储存稳定的固体中间产物 100℃,由甲苯二异氰酸酯表示的多异氰酸酯,马来酸或丙二酸所示的二羧酸和由马来酸酐表示的不饱和二羧酸酐,随后加入催化剂,表面活性剂和水,同时允许CO 2放出,最后使反应混合物 凝固 稳定的固体,例如 以颗粒或粉末的形式,随后可以通过加热至150-300℃进行成型,发泡和聚合,以提供具有低表观密度的不熔,不溶性,阻燃,刚性的多孔树脂产品。