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    • 8. 发明授权
    • Heat-curable and solvent-soluble ester group-containing polymer
compositions and process for their preparation
    • 可热固化和溶剂可溶的含酯基聚合物组合物及其制备方法
    • US4220563A
    • 1980-09-02
    • US847580
    • 1977-11-01
    • Shigeyoshi HaraTakeyoshi Yamada
    • Shigeyoshi HaraTakeyoshi Yamada
    • C08G73/16C08J11/18C08L67/00C09D5/25C08L67/02
    • C08J11/18C08G73/16C08L67/00C08J2367/02Y02W30/706
    • A heat-curable and solvent-soluble ester group-containing polymer composition is prepared by the steps of:(1) either (i) reacting a highly polymerized linear aromatic polyester with a diaryl carbonate to depolymerize it to a solvent-soluble low-molecular-weight polyester (component A) containing terminal aryl carboxylate groups, or (ii) effecting the above depolymerization in the presence of a compound containing at least two specified functional groups thereby to form a modified solvent-soluble low-molecular-weight polyester (component A') containing terminal aryl carboxylate groups; and(2) either (i) mixing the resulting component A or A' with a monomeric or solvent-soluble polymeric, polyfunctional compound (component B) containing at least two hydroxyl and/or primary or secondary amino groups or (ii) partially reacting the resulting component A or A' with the component B. The composition has superior workability in molding and curing, and gives cured molded products of high utilitarian value. It is especially suitable for use in wire enamelling varnishes.
    • 通过以下步骤制备可热固化和溶剂可溶的含酯基聚合物组合物:(1)(i)使高度聚合的线性芳族聚酯与碳酸二芳基酯反应以将其解聚成溶剂可溶的低分子量 含有末端芳基羧酸酯基的重量份聚酯(A成分),或者(ii)在含有至少两个特定官能团的化合物的存在下进行上述解聚,从而形成改性溶剂可溶性低分子量聚酯 A'),其包含末端芳基羧酸酯基团; (2)(i)将所得组分A或A'与含有至少两个羟基和/或伯或仲氨基的单体或溶剂可溶的聚合多官能化合物(组分B)混合,或(ii)部分反应 所得到的组分A或A'与组分B组合。该组合物在成型和固化中具有优异的可加工性,并且具有高功利价值的固化模制产品。 它特别适用于电线搪瓷清漆。