Cytec Technology Corporation

Cytec Canada Inc.

Christine J Bradaric-Baus

Yuehui Zhou

Methods for preparing phosphonium salts by reacting a primary phosphine or a secondary phosphine with an ester compound selected from the group consisting of: a phosphate triester; a phosphonate diester; a sulfate diester; and a sulfonate ester; to form a phosphonium salt of formula VII wherein each of R, R, R, and Ris independently hydrocarbyl and Xis a phosphate, phosphonate, sulfate, or sulfonate are provided herein. These phosphonium salts may find utility in a wide range of applications, including as surfactants, as polar solvents (ionic liquids), as antimicrobial agents, and as a component of spinning finish in polyamide fiber processing.

Phosphonium salts and methods of their preparation

A primary phosphine or a secondary phosphine is reacted with an ester compound selected from the group consisting of; a phosphate triester; a phosphonate diester; a sulfate diester; and a sulfonate ester; to form a phosphonium salt of formula (VII) wherein each of R, R, R, and Ris independently hydrocarbyl and Xis a phosphate, phosphonate, sulfate, or sulfonate. These phosphonium salts may find utility in a wide range of applications, including as surfactants, as polar solvents (ionic liquids), as antimicrobial agents, and as a component of spinning finish in polyamide fiber processing.

Phosphonium salts and their method of preparation

Tertiary phosphines are prepared by reacting a phosphine (PHor a primary or secondary phosphine) with a cyclic alpha,beta-unsaturated carbonyl compound having no more than one C&#x2550;C double bond conjugated with a carbonyl group. The inventive tertiary phosphines can have R groups that are the same or different. The inventive tertiary phosphines may be used as ligands for metal catalysts or as starting materials for preparing phosphonium salts or ylids.

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Stony Creek, Canada

Christine J Bradaric-Baus