Peroxidic perfluoropolyethers

Details Peroxidic perfluoropolyethers Peroxidic perfluoropolyethers

2008-04-29

2008-04-29

Zucker, Paul A. (Department: 1621)

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

Organic compounds

Carboxylic halides

Reexamination Certificate

active

07365229

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 between —CF2COF and —COF;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: 3810874 (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: 5466877 (1995-11-01), Moore
patent: 5508380 (1996-04-01), Turri et al.
patent: 0 790 270 (1997-08-01), None
patent: 1 388 556 (2004-02-01), None
patent: 1 388 556 (2004-02-01), None
patent: 1 454 938 (2004-09-01), None
patent: 1 521 118 (2005-04-01), None
Fluoroketenes VII. Synthesis and Reactivity of Trifluoromethylfluoroketene, Perfluoroacryloyl Fluoride, Perfluoromethacryloyl Fluoride, Methyl Perfluoroacrylate and Methyl Perfluoromethacrylate; David C. England et al; Journal of Fluorine Chemistry, vol. 3 (1973/1974); pp. 63-89.
The Reaction of Hexafluoropropene Oxide with Grignard Reagents; R.O'B. Watts et al; Journal of Fluorine Chemistry; vol. 29; (1973/1974); pp. 7-15.
Electrophilic Elimination of Alkyl Fluoride from Alkyl Fluoroalkenyl Ethers a New Way of Synthesizing Perfluoromethacrylic Acid Derivatives; I.L. Knunyants et al; Tetrahedron; vol. 29; pp. 595-601.

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