New poly(amide-imide)s syntheses. XVII. Preparation and properties of poly(amide-imide)s derived from 3,3-Bis[4-(4-aminophenoxy)phenyl]phthalimidine and various bis(trimellitimide)s

✍ Scribed by Jiun-Hung Lin; Chin-Ping Yang

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 525 KB
• Volume: 34
• Category: Article
• ISSN: 0887-624X
• DOI: 10.1002/(sici)1099-0518(19960415)34:5<747::aid-pola4>3.0.co;2-k

✦ Synopsis

SYNOPSIS

A series of novel bis(phen0xy)phthalimidine-containing poly(amide-imide)s I11 were synthesized by the direct polycondensation of 3,3-bis[4-(4-aminophenoxy)phenyl]phthalimi&ne (BAPP) with various aromatic bis(trimel1itimide)s in N-methyl-2-pyrrolidone (NMP) using triphenyl phosphite and pyridine as condensing agents. Poly(amide-imide)s 111, having inherent viscosities up to 1.36 dL/g, were obtained in quantitative yields. All resulting polymers showed an amorphous nature and were readily soluble in polar solvents such as NMP and N,N-dimethylacetamide. All the soluble poly(amide-imide)s afforded transparent, flexible, and tough films. The glass transition temperatures of these polymers were in the range of 267-322OC and the 10% weight loss temperatures were above 490°C in nitrogen. Some properties of poly(amide-imide)s 111 were compared with those of the corresponding isomeric poly(amide-imide)s I11 prepared from 3,3-[4-(4-trimellitimidophenoxy)phenyl]phthalimidine and various aromatic diamines. 0 1996 John Wiley & Sons, Inc. Keywords: poly(amide-imide)s*bis(trimellitimide)s* 3,3-bis[ 4-(4-aminophenoxy)phenyl]phthalimidinetriphenyl phosphite John Wiley & Sons, Inc.