Union Carbide Corporation

Union Carbide Chemicals and Plastics Company, Inc.

William B Herdle

Bernard Kanner

Gerald J Murphy

Charles H Blevins

Donald L Bailey

Enhanced production of predominantly linearly extended polyalkylene polyamines from alkylenediamines reacted with alkylene glycols or alkanolamines using a phosphorus-containing catalyst is achieved by removing water during the reaction.

Preparation of polyalkylene polyamines

A polysiloxane-polyoxyalkylene composition of the nominal formula: ##STR1## wherein R is an alkyl group having 1 to 3 carbon atoms and R.degree., R', R' and R'' are individually monovalent polyoxyalkylene polyethers attached to the silicon atom through a difunctional link; and,

Polysiloxane-polyoxyalkylene terpolymers for polyurethane foam

Predominantly linearly extended polyalkylene polyamines are produced, in increased conversion rates, by reacting alkylenediamines with alkylene glycols or alkanolamines using a phosphorus amide catalyst in place of phosphorus acid or acid derivative catalysts.

Preparation of polyalkylene polyamines using phosphorus amide catalyst

A process is provided for preparing predominantly linear polyalkylene polyamines which comprises reacting ammonia or an alkyleneamine compound having two primary amino groups or mixtures thereof with an alcohol or an alkanolamine compound having a primary amino group and a primary or secondary hydroxyl group or mixtures thereof in the presence of a derivative of carbonic acid at a temperature at which the reaction will proceed under pressures sufficient to maintain the reaction mixture substantially in a liquid phase.

Process for the preparation of tetraalkylorthosilicates which comprises contacting alkanol and dimethylamine with copper-activated silicon, followed by adding alkanol to the resultant silane mixture.

Preparation of tetraalkoxysilanes

Process for preparing dimethylaminosilanes by reacting silicon with dimethylamine.

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Greenburgh, NY, United States of America

William B Herdle