General Electric Company

Robert Joseph Nick

Joseph John Caringi

Patrick Joseph McCloskey

Thomas Link Guggenheim

Jimmy Lynn Webb

Mark Erik Nelson

Joseph A King, Jr

Drew Elliot Williams

Matthew Hal Littlejohn

A method for the solventless synthesis of a phthalimide or phthalimide mixture is provided comprising contacting at least one amine reactant and at least one anhydride reactant in a solventless environment at a first temperature sufficient to allow the reactants to at least partially condense; and increasing the temperature to a second temperature sufficient to melt the reaction mixture, thereby allowing the reaction to go essentially to completion and form the reaction product.

Solventless preparation of phthalimides

Quaternary salts having a double helix structure are prepared by the reaction of dihydroxyaromatic compound, preferably a bisphenol, with an alkali metal hydroxide and a quaternary salt, such as a tetraalkylammonium or hexaalkylguanidinium chloride. The quaternary salts and their alkaline hydrolysis products are useful as catalysts in various reactions, including imide formation from bisphenol salts and halo- or nitro-substituted phthalimides and redistribution and equilibration of polycarbonates.

Quaternary bisphenolates, methods for their preparation, and uses thereof

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Dunstable, MA, United States of America

Robert Joseph Nick