Preparation of perfluoropolyethers having at least one --CH.sub.2OH or --CH(CF.sub.3)OH end group
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United States of America Patent
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Nov 7, 2006
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app pub date -
May 7, 2004
filing date -
May 15, 2003
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Abstract
A process for preparing perfluoropolyethers having at least one --CH.sub.2OH or --CH(CF.sub.3)OH end group by reaction of the corresponding pefluoropolyethers having at least one carboxylic --COOH or ketonic --(CF.sub.3)C.dbd.O end group with gaseous hydrogen, between 80.degree. C. and 140.degree. C., in the presence of hydrogenation catalysts.
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