摘要：

United States Patent 3,179,630 PROCESS FOR PREPARING POLYIMIDES BY TREATING POLYAMIDE-ACIDS WITH LOW- ER FATTY MGNOCARBQXYLIC ACID AN- HYDRIDES Andrew Laszlo Endrey, Parma, Ohio, assignor to E. I. du Pont de Nemours and Company, Wilmington, DeL, a corporation of Delaware No Drawing. Filed Jan. 26, 1962, Ser. No. 169,106 14 Claims. (Cl. 26078) This invention relates to novel polymeric materials and has as its primary object a novel method for the preparation of polyimides. Other objects will appear hereinafter.

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