REMOVAL OF RESIDUAL SULFUR DIOXIDE FROM DIMETHYL SULFATE

Title:

REMOVAL OF RESIDUAL SULFUR DIOXIDE FROM DIMETHYL SULFATE

Document Type and Number:

WIPO Patent Application WO2006097421

Kind Code:

A9

Abstract:

The present invention relates to a method of removing SO₂ contaminants from dimethyl sulfate (DMS) by treatment with an oxidizing agent, and to a process for the preparation of odour free fatty acid trialkanolamine esters quaternized with DMS which is substantially free of SO₂ contaminants.

Inventors:

JOYCE WILLIAM FRANCIS (US)
TELSCHOW JEFFREY EARL (US)

Application Number:

PCT/EP2006/060545

Publication Date:

October 25, 2007

Filing Date:

March 08, 2006

Export Citation:

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Assignee:

AKZO NOBEL NV (NL)
JOYCE WILLIAM FRANCIS (US)
TELSCHOW JEFFREY EARL (US)

International Classes:

C07C213/06; C07C213/08; C07C219/06; C07C303/44; C07C305/08

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