发明公开
EP0181837A3 Polyimides, process for their preparation, and their use, and tetracarboxylic acids and tetracarboxylic acid derivatives 失效
聚酰亚胺,其制备方法及其用途,四羧酸和四羧酸衍生物

Polyimides, process for their preparation, and their use, and tetracarboxylic acids and tetracarboxylic acid derivatives
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