Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1988-10-26
1989-10-17
Kight, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528170, 528182, 528184, 528193, 528348, C08G 6944
Patent
active
048748366
ABSTRACT:
Disclosed herein are a thermoplastic wholly aromatic polyimide ester consisting essentially of structural units represented by the general formulas I, II, III, and IV: ##STR1## wherein X and Y are either --O-- or --CO-- and may be either identical with or different from each other, n is an integrer of 0 or 1, X group and imide group and imide group in unit II are present at para or meta position to each other, two carbonyl gorups in unit IV are present at para or meta position to each other, and each end of units I, II, III, and IV is bonded to another end trough ester bond, and wherein the polyimide ester has a melt viscosity of 1.0 to 1.0.times.10.sup.5 Pa.multidot.s measured at a shear stress of 0.025 MPa and a temperature of 300.degree. to 400.degree. C.; and a process for producing the thermoplastic wholly aromatic polyimide ester.
REFERENCES:
patent: 4351917 (1982-09-01), Calundann et al.
patent: 4351918 (1982-09-01), Charbonneau et al.
patent: 4355132 (1982-10-01), East et al.
Fujiwara Ken-ichi
Hayashi Hideo
Wakabayashi Makoto
Idemitsu Petrochemical Co. Ltd.
Kight John
Mason T.
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