Preparation of perfluoropolyethers having at least one...

Details Preparation of perfluoropolyethers having at least one... Preparation of perfluoropolyethers having at least one...

2006-11-07

2006-11-07

Keys, Rosalynd (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C568S623000

Reexamination Certificate

active

07132574

ABSTRACT:
A process for preparing perfluoropolyethers having at least one —CH2OH or —CH(CF3)OH end group by reaction of the corresponding pefluoropolyethers having at least one carboxylic —COOH or ketonic —(CF3)C═O end group with gaseous hydrogen, between 80° C. and 140° C., in the presence of hydrogenation catalysts.

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