公开(公告)号：US3629180A

公开(公告)日：1971-12-21

申请号：US3629180D

申请日：1969-01-23

Applicant: TORAY INDUSTRIES

Inventor： YODA NAOYA ,  KURIHARA MASARU ,  DOGOSHI NORIAKI ,  NAKANISHI RYOJI ,  YUMOTO HIROSUKE ,  ITOGA MASAAKI ,  MOCHIZUKI HIROSHI ,  YOSHII TOSHIYA ,  FUJITA SABURO

IPC: C08G73/10 ,  C08G51/50

CPC classification number: C08G73/1007

Abstract: A PROCESS FOR PRODUCING SHAPABLE POLYMERIC COMPOSITIONS HAVING IMPROVED MECHANICAL PROPERTIES IS DESCRIBED WHICH INVOLVES THE HEATING OF A POLYMER CONTAINING POLYAMIDE-ACID RECURRING UNITS IN AN ORGANIC POLYMERIZATION SOLVENT, WHICH SOLVENT ALSO CONTAINS AN AMOUNT OF A PHOSPHOROUS COMPOUND IN THE RANGE OF FROM ABOUT .01% BY WEIGHT TO ABOUT 30% BY WEIGHT UNTIL IMIDE RING CLOSURE IS EFFECTED.