Process for preparing hydrogen-terminated polyoxyperfluoroalkane

Details Process for preparing hydrogen-terminated polyoxyperfluoroalkane Process for preparing hydrogen-terminated polyoxyperfluoroalkane

1996-12-19

1999-10-19

Henley, III, Raymond

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

Organic compounds

Oxygen containing

568614, C07C 4311

Patent

active

059691921

ABSTRACT:
A process for preparing hydrogen-terminated polyoxyperfluoroalkanes having molecular weight lower than 1800, by decarboxylation of the corresponding polyoxyperfluoroalkanes having one or two end groups selected form --OCF.sub.2 COOZ, --OCF.sub.2 CF.sub.2 COOZ and --OCF(CF.sub.3)COOZ, wherein Z is an alkaline metal or ammonium, carried out in the presence of water at temperatures from 140.degree.-170.degree. C. and under a pressure of at least 4 atmospheres.

REFERENCES:
patent: 3250806 (1966-05-01), Warnell
patent: 3515701 (1970-06-01), Van Dyke Tiers
patent: 5091589 (1992-02-01), Meyer et al.

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