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Structure/permeability relationships of polyamide-imides

✍ Scribed by Xuesong Gao; Fengcai Lu


Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
375 KB
Volume
54
Category
Article
ISSN
0021-8995

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πŸ“œ SIMILAR VOLUMES


Kinetic studies of polyamide-imide synth
✍ K. S. Ho; L. W. Chen πŸ“‚ Article πŸ“… 1997 πŸ› John Wiley and Sons 🌐 English βš– 189 KB πŸ‘ 2 views

To understand the kinetic of synthesis of polyamide-imide (PAI) via pchlorophenol-(PCP) blocked 4,4 -diphenyl methane diisocyanate (MDI) with trimellitic anhydride (TMA), a series of reactions of blocked MDI with excess phthalic anhydride (PA) and benzoic acid are designed. PCP-blocked phenyl isocya

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The synthesis of polyamide-imide (PAI) can be performed by the reaction of p-chlorophenol-(PCP) blocked 4,4 -diphenyl methane diisocyanates (BMDI) with trimellitic anhydride (TMA) using a two-stage heating. At 80ЊC the polyimide oligomers were first formed and the high molecular weight PAI can not b

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Polyimides of different structures were synthesized by reaction of 1,4phenylene diisocyanate (PPDI) and 1,5-naphthalene diisocyanate (NDI) with pyromellitic dianhydride (PMDA) and 3,3Ј,4,4Ј-benzophenonetetracarboxylic dianhydride (BTDA). Polyamide-imides were also prepared by reaction of PPDI and ND

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We report on a curing study of Probimide 32, a preimidized polyamideimide. The polymer was in a solution of N-methyl pyrrolidone (NMP) and xylene and was spun cast or doctor-bladed to form films for study. The films were cured by drying under a variety of conditions to effect solvent removal. We cha