Process for intramolecularly condensing a non-linear optical pol

Details Process for intramolecularly condensing a non-linear optical pol Process for intramolecularly condensing a non-linear optical pol

1995-02-15

1998-04-07

Dodson, Shelley A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

252582, 359237, 359242, 359244, 359245, 385122, 4284735, 526259, 526265, 528125, 528126, 528128, 528172, 528176, 528220, 528229, 528353, C08G 6926, C08G 7310, B32B 2708

Patent

active

057365920

ABSTRACT:
A process for intramolecularly condensing a polyamic acid composition containing an NLO compound to form a polyimide host matrix composition containing as a guest the NLO compound, which process includes the step of uniformly heating the polyamic acid composition, in the absence of a solvent or diluent, to a temperature at which the intramolecular condensation will occur without thermal degradation of the NLO compound, so that the temperature differential within the polyamic acid is below that which will produce localized thermal degradation temperatures, until the intramolecular condensation of the polyamic acid composition to the polyimide host matrix composition is substantially complete. Polyimide host matrix compositions containing guest NLO compounds prepared by the inventive process are also disclosed, wherein the NLO compounds have external field-induced molecular alignments.

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