Title:
アシルフルオライド末端基を有するペルフルオロポリエーテル類の製造法
Document Type and Number:
Japanese Patent JP4373728
Kind Code:
B2
Abstract:
A process for the preparation of perfluoropolyethers of formula: T-CFX'-O-Rf-CFX-COF wherein: T = COF, F, C1-C3 perfluoroalkyl; X, X' = -F, -CF3; Rf = -(C2F4O)m(CF2CF(CF3)O)n(CF2O)p(CF(CF3)O)q-, the sum n+m+p+q ranges from 2 to 200, by reduction with hydrogen of the corresponding peroxidic perfluoropolyethers, in the presence of a catalyst formed by metals of the VIII group supported on metal fluorides, at a temperture from 20 DEG C to 140 DEG C, and at a pressure between 1 and 50 atm.
Inventors:
Antonella di meo
Losardo Picozzi
Claudio Tonelli
Losardo Picozzi
Claudio Tonelli
Application Number:
JP2003205413A
Publication Date:
November 25, 2009
Filing Date:
August 01, 2003
Export Citation:
Assignee:
Solvay Solexis S.p.A.
International Classes:
C07C51/58; C07C51/62; C07B61/00; C07C59/135; C08G65/00; C08G65/22; C08G65/322
Foreign References:
| US3847978 |
Attorney, Agent or Firm:
Shintaro Nogawa