SOLVENTLESS THERMOSETTING COMPOSITION WHICH IS LIQUID AT ORDINARY TEMPERATURE AND PRODUCTION METHOD THEREOF

Japanese Patent JP2022104654

A

To provide a solventless thermosetting composition which is liquid at ordinary temperature and gives a cured product having excellent heat resistance.SOLUTION: A bisphenol-A type cyanate resin which is solid at ordinary temperature is heat-melted to obtain a molten liquid. To this molten liquid is added and mixed trimethylolpropane diallyl ether which is liquid at ordinary temperature to obtain a liquid mixture. To this liquid mixture is added and mixed P-d type benzoxazine which is solid at ordinary temperature and the P-d type benzoxazine is melted, Thereafter, the mixture is cooled to room temperature to obtain a solventless thermosetting composition which is liquid at ordinary temperature and in which a reaction product of a polyfunctional cyanate compound and a hydroxyl group-containing compound, a polyfunctional cyanate compound, and a benzoxazine ring-containing compound are compatibilized. By using, as the molten liquid, a material obtained by heat-melting a bisphenol-A type cyanate resin which is solid at ordinary temperature and a polyfunctional maleimide compound which is solid at ordinary temperature, there is obtained a solventless thermosetting composition which is liquid at ordinary temperature and in which further a polyfunctional maleimide compound is compatibilized.SELECTED DRAWING: None

JPH0643495

[Title of the Invention] A linear thermotropic copolymer composed of an aromatic azomethine type mesogen unit and a polysiloxane spacer, and a method for producing the same.

SATO SHINICHI
FUJINO NAOHIKO
YOSHIDA YOSHIAKI
ENDO TAKESHI

JP2020219733A

July 11, 2022

December 29, 2020

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KONISHI CO LTD

C08G73/00; C08G14/073

Okumura Shigeki

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