Perfluoropolyoxyalkylene endowed with a high viscosity and a low

Details Perfluoropolyoxyalkylene endowed with a high viscosity and a low Perfluoropolyoxyalkylene endowed with a high viscosity and a low

1992-04-22

1994-10-11

Cintins, Marianne M.

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

Organic compounds

Oxygen containing

560302, 20415792, C07C40900

Patent

active

053549228

ABSTRACT:
Peroxy perfluoropolyoxyalkylenes are prepared with high yields by carrying out the photo-oxidation of tetrafluoroethylene with molecular oxygen, by means of ultraviolet radiations, operating in the presence of pentafluorochloroethane as a solvent for tetrafluoroethylene.
Thus, it is possible to obtain peroxy perfluoropolyoxyalkylenes having a viscosity at 20.degree. C. ranging from 300,000 to 8,000,000 cSt and endowed with a peroxide content not higher than 4.
Such perfluoropolyoxyalkylenes provide, through chemical reduction, perfluoropolyoxyalkylenes endowed with a functionality higher than 1.9 and at the same time with a high molecular weight.

REFERENCES:
patent: 3715378 (1973-02-01), Sianesi et al.
patent: 3810874 (1974-05-01), Mitsch et al.
patent: 3847978 (1974-11-01), Sianesi et al.
patent: 4451646 (1984-05-01), Sianesi et al.
patent: 4500739 (1985-02-01), Caporiccio et al.
patent: 4668357 (1987-05-01), Marchionni et al.
patent: 4859299 (1989-08-01), Kobayashi et al.
patent: 4952735 (1990-08-01), Kobayashi et al.
patent: 5000830 (1991-03-01), Marchionni et al.
patent: 5051158 (1991-09-01), Marchionni et al.

Affiliated with

Also associated with

Rating

Perfluoropolyoxyalkylene endowed with a high viscosity and a low does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Perfluoropolyoxyalkylene endowed with a high viscosity and a low, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Perfluoropolyoxyalkylene endowed with a high viscosity and a low will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1660093