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Patent Searching and Data


Title:
METHOD FOR MAKING A POLYETHER MONOMER
Document Type and Number:
WIPO Patent Application WO2005000929
Kind Code:
A3
Abstract:
A method for making a polyether monomer having at least one unsaturated site per molecule and having a desired number of alkoxyl repeating units includes the steps of reacting an active hydrogen-containing monomer having at least one unsaturated site per molecule with an alkyl oxide in the presence of an alkoxylation catalyst and a polymerization inhibitor at a temperature from about 30 °C to less than 45 °C to produce a polyether monomer. In one embodiment, from about 5 to about 1000 parts by weight of a phenothiazine polymerization inhibitor per one million parts by weight of the active hydrogen-containing monomer phenothiazine compound is used as the polymerization inhibitor.

Inventors:
SHARMA AMIT K (US)
MARTIN CLAUDE K (US)
BOUKHELIFA AZIZ (US)
CHEN NING (US)
Application Number:
PCT/US2004/015898
Publication Date:
October 05, 2006
Filing Date:
May 20, 2004
Export Citation:
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Assignee:
RHODIA
International Classes:
C07C67/26; C07C67/28; C08G65/26
Foreign References:
US3804790A1974-04-16
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