Synthesis and characterization of fluorinated poly(imide-pyridazine-amide)s
✍ Scribed by Maria Bruma; Burkhard Schulz; Frank W. Mercer
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 468 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0032-3861
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📜 SIMILAR VOLUMES
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.
## Abstract Summary: A CF~3~‐containing diamine, 4,4′‐bis(4‐amino‐2‐trifluoromethylphenoxy)biphenyl (I), was synthesized from 4,4′‐biphenol and 2‐chloro‐5‐nitrobenzotrifluoride. The imide‐containing diacids (V~a‐b~ and VI~a‐l~) were prepared by condensation reaction of amino acids, aromatic diamine
4,4'-(Hexa¯uoroisopropylidene)-bis-(phthalic anhydride) (1) was reacted with L-leucine (2) in toluene solution at re¯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