Method of making polyetherimide

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United States of America Patent

PATENT NO 10793675
APP PUB NO 20190292318A1
SERIAL NO

16302428

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Abstract

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A method of making a polyetherimide comprises: combining a bisphenol A dianhydride, p-phenylene diamine and a halogenated aromatic solvent to form a reactant solution; heating the reactant solution to a temperature of 205° C. to 330° C. at a pressure sufficient to prevent boiling to afford a reaction solution; removing water from the reaction solution; maintaining the reaction solution at a temperature of 205° C. to 330° C. and a pressure sufficient to prevent boiling for 10 minutes to 5 hours to form a product mixture comprising the polyetherimide and solvent; and isolating the polyetherimide.

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Patent Owner(s)

  • SABIC GLOBAL TECHNOLOGIES B.V.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Guggenheim, Thomas Link Mount Vernon, US 57 363
Tople, Nitin Vilas Evansville, US 9 5
Venkataraman, Karthik Evansville, US 12 54

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