公开(公告)号：US3691136A

公开(公告)日：1972-09-12

申请号：US3691136D

申请日：1971-03-29

Applicant: STANDARD OIL CO

Inventor： SERRES CARL JR ,  BOLTON BENJAMIN A

IPC: C08G73/14 ,  C08G20/32 ,  C08G51/34 ,  C08G51/44

CPC classification number: C08G73/14

Abstract: Polyamide-imide compositions useful for film preparation are disclosed. These compositions comprise the polyamide-imide polymer, a solvent system for said polymer, and one of the following stripping agents: phosphoric acid, phosphites, esters of phosphoric acid and strong organic acids.

Abstract translation: 公开了可用于膜制备的聚酰胺 - 酰亚胺组合物。 这些组合物包括聚酰胺 - 酰亚胺聚合物，所述聚合物的溶剂体系和以下汽提剂之一：磷酸，亚磷酸酯，磷酸和强有机酸的酯。

公开(公告)号：US3652498A

公开(公告)日：1972-03-28

申请号：US3652498D

申请日：1971-03-01

Applicant: STANDARD OIL CO

Inventor： MORELLO EDWIN F ,  SERRES CARL JR

IPC: C08G73/14 ,  H01B3/30 ,  C08G20/32

CPC classification number: C08G73/14 ,  H01B3/306

Abstract: AN IMPROVED PROCESS FOR PRODUCING SOLUBLE POLYMERS FOR USE AS A POLYAMIDE-IMIDE WIRE ENAMEL. IN A PROCESS WHERE WIRE ENAMELS ARE PRODUCED FORM AN EQUIMOLAR REACTION OF AN ACID HALIDE OF A BENZENE TRICARBOXYLIC ACID ANHYDRIDE AND AN AROMATIC PRIMARY DIAMINE IN AN ALKYL SUBSTITUTED PHENOL OR PHENOL MEDIUM, THE IMPROVEMENT IN SAID PROCESS COMPRISING PRETREATING THE REACTION MEDIUM WITH ABOUT 1 TO 5% WATER OR ALIPHATIC ALCOHOL BASED ON WEIGHT PRIOR TO THE SCAVENGING OF THE ENTRAINED HYDROGEN HALIDE WITH AN ALKYLENE OXIDE CONSISTING OF ABOUT 2 TO 4 CARBON ATOMS THUS REDUCING THE TENDENCY OF THE POLYMER SOLUTION TO GEL AND IMPROVING THE PROPERTIES OF SAID POLYMER.