General Electric Company

General Electric Corporation Gmbh

Walter Karl Olander

Eugene G Banucci

Robert J Axelrod

Ronald L Markezich

Gim F Lee

Otto S Zamek

Gary L Freimiller

The melt viscosity of thermoplastic polyphenylene ether resins and compositions thereof with compatible thermoplastic resins is decreased when the melt has a small content of a diaryl sulfide wherein each aryl group adjacent to the sulfide linkage contains at least one --OH substituent (or ester thereof with a monobasic acid containing at least six carbon atoms).

Flow enhanced polyphenylene ether resin compositions

This invention provides a novel process for the oxidative coupling of phenolic monomers with novel manganese complexes of phenyl benzoin oximes.

Oxidative coupling of phenolic monomers with manganese complexes of

Improved reaction rates and yields are provided if phenolic compounds are polymerized with basic manganese chelate catalysts in a self-precipitating system comprising an aromatic hydrocarbon and a water-immiscible alcohol.

Use of manganese chelate to oxidatively couple phenolic compound in a

Thermally stable polycarbonate compositions are obtained by admixing with a high molecular weight aromatic polycarbonate resin a stabilizing amount of a bisphosphite.

Thermally stable polycarbonate compositions

Polyphenylene ether-poly(vinyl aromatic) compositions are prepared by oxidatively coupling a phenol dissolved in a basic reaction medium comprising a vinyl aromatic compound in the presence of a manganese chelate catalyst, selectively liquid-liquid extracting base-reactive by-products, then thermally polymerizing the vinyl aromatic compound.

Poly(phenylene ether)poly(vinyl aromatic) compositions

A novel catalyst is disclosed that is useful in the oxidative coupling of phenolic monomers. The catalyst is a manganese chelate that is derived from a salicylaldehyde-alkanolimine.

Manganese complexes of salicylaldehyde-alkanolimines as catalysts for

Thermally stable polycarbonate compositions are obtained by admixing with a high molecular weight aromatic polycarbonate resin a stabilizing amount of a hindered phenol phosphite.

Hindered phenol phosphites

Manganese complexes of phenyl benzoin in oxime catalysts

A novel catalyst system is disclosed that is useful in the polymerization of polyphenylene oxide resins. The catalysts are manganese complexes that are derived from a manganese salt and an imine compound.

Complexed manganese catalyst

A process for preparing copolymers of polyphenylene oxide employing a manganese (II) chelate catalyst is disclosed as well as grafted copolymers thereof.

Process for preparing polyphenylene oxide copolymers

Manganese complexes of salicyl-aldehyde-alkanolimines as catalysts for

A novel method is disclosed for the preparation of polyphenylene oxides by the oxidative coupling of phenolic monomers which is based on the use of a manganese-vinyl resin complex as a catalyst.

Method for preparing polyphenylene oxides with manganese-vinyl resin

Novel compositions are disclosed which include a polyphenylene ether resin, an alkenyl aromatic resin modified with rubber, and a hindered phenol as a stabilizer. Also included within the scope of this invention are reinforced and flame-retardant compositions of the polyphenylene ether resin, the alkenyl aromatic resin modified with a rubber, and the hindered phenol.

Stabilized polyphenylene ether resin compositions containing hindered

A novel catalyst is disclosed that is useful in the oxidative coupling of phenolic monomers. The catalyst is a manganese chelate derived from a benzoin-imine. This invention relates to a new and novel catalyst that is useful for catalyzing the oxidative coupling of a phenolic monomer. The catalyst is a manganese chelate derived from a benzoin-imine.

Manganese benzoin-imine catalysts and process of preparing polyphenylene

A novel method for the preparation of polyphenylene oxides is disclosed. The method comprises the oxidative coupling of a phenolic monomer.

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Clifton Park, NY, United States of America

Walter Karl Olander