Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1992-06-12
1993-08-03
Cintins, Marianne M.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
568921, 568923, 55220, 55244, C07C 3134
Patent
active
052330982
ABSTRACT:
A method for removing a perfluoroalkyl alcohol from a waste gas and recovering the perfluoroalkyl alcohol comprising the steps of bringing the waste gas into contact with an aqueous alkaline solution thereby to absorb the perfluoroalkyl alcohol into said solution and consequently obtain an aqueous alkaline solution containing an alkoxide of the perfluoroalkyl alcohol. Adding an acid to the aqueous alkaline solution containing the alkoxide of the perfluoroalkyl alcohol until the alkaline solution turns into an acidic solution with a pH value smaller than 5, thereby to turn said alkoxide into said perfluoroalkyl alcohol and subjecting the acidic solution to distillation to recover the perfluoroalkyl alcohol.
REFERENCES:
patent: 3151171 (1964-09-01), Day
patent: 3317616 (1967-05-01), Weinmayr
Websters II New Riverside University Dictionary, Houghton Mifflin Company, Boston, 1984, p. 92.
Hackhs Chemical Dictionary, Mc Graw Hill, New York, 1969, p. 26.
Hisayuki Tuneyoshi
Katsuhara Yutaka
Nakamichi Toshihiro
Nakazora Toru
Takesita Katumi
Central Glass Company Limited
Cintins Marianne M.
Cook Rebecca
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