Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1983-01-21
1984-04-17
Lee, Lester L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
264349, 526 65, 526 66, 528 26, 528 28, 528125, 528126, 528173, 528179, 528185, 528188, 528351, 528352, 528353, C08G 7310
Patent
active
044435924
ABSTRACT:
Polyetherimides are formed by the blending of a first melt of organic dianhydride and a second melt of organic diamine and the resulting blend is polymerized in a continuous, steady state manner, employing an extruder reactor as the reaction chamber. The extruder reactor is provided with means for heating, evacuation of water of reaction, and transfer sections in order to achieve the steady state necessary for continuous production of a substantially uniform polyimide.
REFERENCES:
patent: 4011198 (1977-03-01), Takekoshi et al.
patent: 4073773 (1978-02-01), Banucci et al.
Lovgren Eric M.
Meissner Peter G.
Schmidt Lawrence R.
Davis Jr. James C.
General Electric Company
Lee Lester L.
Magee Jr. James
Teoli William A.
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