Synthesis and study of new fluorinated poly(imide-amide)s
β Scribed by Elena Hamciuc; Corneliu Hamciuc; Ion Sava; Mitica Sava; Maria Bruma
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 83 KB
- Volume
- 283
- Category
- Article
- ISSN
- 1438-7492
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Prague, Czechoslovakia, under t h e auspices of t h e Commission on Macromolecular Compounds within t h e framework of multilateral cooperation ol t h r Academies of Sciences of socialist countries, organized by t h e lnstitute of Macromolecular Chemistry o r t h e Czechoslovak Academy of Sciences.
Novel poly(amide imide)s having inherent viscosities in the range 0.89-1.56 dL/g were prepared by the method of low temperature polycondensation in solution of N,N-dimethylacetamide (DMA) from aromatic diamines and a new monomer: N-[4"-(chloroformylphenyl) -4'-iminobenzoyl] trimellitimide chloride.
An imide ring-performed dicarboxylic acid bearing one hexafluoroisopropylidene and two ether linkages between aromatic rings, 2,2-bis[4-(4-trimellitimidophenoxy)phenyl]hexafluoropropane (II), was prepared from the condensation of 2,2-bis[4-(4-aminophenoxy)phenyl]hexafluoropropane and trimellitic anh
4,4'-(HexaΒ―uoroisopropylidene)-bis-(phthalic anhydride) (1) was reacted with L-leucine (2) in toluene solution at reΒ―uxing temperature in the presence of triethylamine and the resulting imideacid (4) was obtained in quantitative yield. The compound (4) was converted to the diacid chloride (5) by rea