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:
Sep. 29, 2020
Filed:
Jul. 03, 2018
Applicant:
Daikin Industries, Ltd., Osaka, JP;
Inventors:
Assignee:
DAIKIN INDUSTRIES, LTD., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 19/14 (2006.01); C07C 17/20 (2006.01); C07C 17/395 (2006.01);
U.S. Cl.
CPC ...
C07C 19/14 (2013.01); C07C 17/204 (2013.01); C07C 17/395 (2013.01);
Abstract
This invention provides a composition that contains PFOB with a PFOA content lower than that of known PFOB, and that is less likely to have an adverse effect on the environment; and provides a method for producing PFOB. The composition contains CFBrand further contains CFCOOH, wherein CFCOOH is present in a concentration of 25 ppb or less based on the total weight of CFBr. The method for producing CFBr comprises reacting CFI and a brominating agent to obtain CFBr, and alkali-washing the obtained CFBr to reduce the CFCOOH content to 25 ppb or less based on the total weight of CFBr.