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2 120 450

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C1

(51)

IPC

(21) (22)

Application

94040889/04, 1994-11-15

(22)

Actual filing date

1994-11-15

(45)

Published

1998-10-20

(72)

Inventor

Dzhuzeppe MarkonniP'Er Antonio GuardaMauritsio Paganin

(73)

Holder

Ausimont S.P.A.

METHOD OF PREPARING PERFLUOROPOLYETHERS Russian patent published in 1998 - IPC

Abstract RU 2120450 C1

FIELD: chemistry of polymers, more particularly radical polymerization initiators and cross-linking agents for polymers. SUBSTANCE: peroxide perfluoropolyethers are prepared by oxidation of tetra-fluoroethylene wit oxygen in solvent in the presence of chemical initiator at 2-15 atm using perfluoroethylene to chemical initiator ratio of higher than 35. The claimed method makes it possible to increase molecular weight of perfluoropolyethers at the same content of peroxide oxygen. EFFECT: more efficient preparation method. 12 cl, 25 ex, 3 tbl

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RU 2 120 450 C1

Authors

Dzhuzeppe Markonni

P'Er Antonio Guarda

Mauritsio Paganin

Dates

1998-10-20—Published

1994-11-15—Filed

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