申请人:KANEGAFUCHI KAGAKU KOGYO KABUSHIKI KAISHA
公开号:EP0114059A2
公开(公告)日:1984-07-25
A polyamide acid composition for preparing a polyimide which is improved in the stability in a form of solution and can extend the pot life of the composition comprising a solution of a polyamide acid in an organic solvent, the polyamide acid being a precursor of the polyimide, and an N-substituted heterocyclic compound as a chemical treating agent which can lower a rate of conversion of the polyamide acid to the polyimide. The pot life can be extremely extended to give the composition an enough flowability for a long time without reducing the excellent properties such as a heat resistance of the obtained polyimide.
一种用于制备聚酰亚胺的聚酰胺酸组合物,该组合物在溶液形式下的稳定性得到改善,并可延长其罐装寿命,该组合物包括聚酰胺酸在有机溶剂中的溶液,聚酰胺酸是聚酰亚胺的前体,以及一种 N-取代杂环化合物作为化学处理剂,可降低聚酰胺酸转化为聚酰亚胺的速率。可以极大地延长罐装寿命,使组合物在长时间内具有足够的流动性,而不会降低所获得的聚酰亚胺的优异性能,如耐热性。