The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 30, 2006
Filed:
Jul. 15, 2004
Takashi Okazoe, Yokohama, JP;
Kunio Watanabe, Yokohama, JP;
Daisuke Shirakawa, Yokohama, JP;
Masahiro Ito, Yokohama, JP;
Shin Tatematsu, Yokohama, JP;
Takashi Okazoe, Yokohama, JP;
Kunio Watanabe, Yokohama, JP;
Daisuke Shirakawa, Yokohama, JP;
Masahiro Ito, Yokohama, JP;
Shin Tatematsu, Yokohama, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
A fluorinated polyvalent carbonyl compound is produced by an economically advantageous method from inexpensive materials without requiring a complicated synthetic process step. Namely, the present invention comprises reacting a polyvalent alcohol having at least two kinds of alcohol skeletons selected among a primary alcohol, a secondary alcohol and a tertiary alcohol, with an acid halide to obtain a polyvalent ester compound, fluorinating it in a liquid phase to obtain a perfluorinated polyvalent ester compound, and cleaving the ester bonds derived from primary and secondary alcohols in the perfluoropolyvalent ester compound to obtain a fluorinated polyvalent carbonyl compound.