Enichem S.p.a

Istituto Guido Donegani S.p.a.

Mark T DeMeuse

Fabrizio Parodi

Ernesto Occhiello

Kwan-Yue Alex Jen

John T Kenney

Renata Gerbelli

Charles L Ryan, Jr

Diana Marie Applegate

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.

Process for intramolecularly condensing a non-linear optical polyamic

Liquid reactive thermosetting compositions comprising:

Liquid reactive thermosetting compositions and process for their

An intermolecular and/or intramolecular non-foamed polyimide is prepared by heating an aromatic tetracarboxylic acid or dianhydride thereof and an aromatic diamine thereby preparing a polyamic acid, and then subjecting the polyamic acid in the solid phase in the absence of solvent to focused microwave radiation, thereby preparing the polyimide product.

Polyamic acid to polyimide conversion by microwave heating

Mixtures of polyisocyanates and epoxides are cured by microwave irradiation, optionally with microwave or thermal post-curing to produce cured polymer articles having good chemical, electrical and mechanical properties.

Process for curing polymerizable liquid compositions based on

Carbonate monomers are polymerized in the presence or absence of a polymerization initiator by irradiation with electromagnetic radiation in the absence of solvent or diluent.

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Robbinsville, NJ, United States of America

Mark T DeMeuse