Peroxidic perfluoropolyethers

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic halides

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Reexamination Certificate

active

07371900

ABSTRACT:
Peroxidic perfluoropolyethers having formula:in-line-formulae description="In-line Formulae" end="lead"?X1—O(CF2O)n1(CF2CF2O)m1(CF2(CF2)zCF2O)p1(O)h—X2  (I)in-line-formulae description="In-line Formulae" end="tail"?wherein:X1and X2, equal to or different from each other, are chain end groups selected among —CF2COF, —COF, —SO2F;n1, m1, p1 and h are integers such that the number average molecular weight is in the range 700-100,000;z=1 or 2;with the proviso that:the m1
1 ratio is between 0.2 and 10;the p1/(n1+m1) ratio is lower than 0.05;the h/(n1+m1+p1) ratio is such that the PO content, defined as grams of active oxygen/100 g of compound, is in the range 0.8-4.5, preferably 1.4-3.8;the perfluorooxyalkylene units being statistically distributed along the polymeric chain.

REFERENCES:
patent: 3041317 (1962-07-01), Gibbs et al.
patent: 3810674 (1974-05-01), Mitsch et al.
patent: 3847978 (1974-11-01), Sianesi et al.
patent: 4451646 (1984-05-01), Sianesi et al.
patent: 4721795 (1988-01-01), Caporiccio et al.
patent: 4757145 (1988-07-01), Caporiccio et al.
patent: 5354922 (1994-10-01), Marchionni et al.
patent: 0 510 685 (1992-10-01), None
patent: 0 538 827 (1993-04-01), None
R.E. Banks et al; Perfluoroalkyl Derivatives of Sulphur. Part VIII.1Synthesis and Reactions of Perfluoroethylenesulphonyl Fluoride; Journal of the Chemical Society (C), 1966; pp. 1171-1179.
European Search Report.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Peroxidic perfluoropolyethers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Peroxidic perfluoropolyethers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Peroxidic perfluoropolyethers will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3985166

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.