Organic compounds -- part of the class 532-570 series – Organic compounds – Halogen containing
Reexamination Certificate
2008-01-22
2008-01-22
Puttlitz, Karl (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Halogen containing
Reexamination Certificate
active
07321071
ABSTRACT:
The present invention relates to a method for producing a water-soluble fluorine-containing vinyl ether which comprises subjecting a fluorine-containing 2-alkoxypropionic acid derivative represented by the following general formula (I):(wherein A represents —OM1or —OM21/2, and M1represents an alkali metal and M2represents an alkaline earth metal; X represents a halogen atom; Y1and Y2are the same or different and each represents a fluorine atom, a chlorine atom, a perfluoroalkyl group or a fluorochloroalkyl group; n represents an integer of 0 to 3, and n of Y1s may be the same or different; m represents an integer of 1 to 5, and m of Y2s are the same or different; and Z represents a hydrophilic group) to thermal decomposition at a temperature of not lower than 50° C. but lower than 170° C. in the presence of a coordinating organic solvent to give a water-soluble fluorine-containing vinyl ether represented by the general formula (II):(wherein Y1, Y2, Z, n and m are as defined above),said coordinating organic solvent having a coordinating property with an ion of said M1or an ion of said M2said coordinating organic solvent being in an amount of 10 to 1,000 parts by mass per 100 parts by mass of the fluorine-containing 2-alkoxypropionic acid derivative.
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Arase Takuya
Ichihara Kazuyoshi
Ishii Kenji
Mantani Toshiya
Shinoki Noriyuki
Daikin Industries Ltd.
Puttlitz Karl
Sughrue Mion Pllc.
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