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:
Jun. 13, 2017
Filed:
Dec. 06, 2016
Applicant:
Asahi Glass Company, Limited, Chiyoda-ku, JP;
Inventors:
Yu Takeuchi, Chiyoda-ku, JP;
Shoji Furuta, Chiyoda-ku, JP;
Assignee:
Asahi Glass Company, Limited, Chiyoda-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07C 17/278 (2006.01); C07C 19/08 (2006.01); C07C 19/10 (2006.01); C07C 17/272 (2006.01);
U.S. Cl.
CPC ...
C07C 17/278 (2013.01); C07C 17/272 (2013.01); C07C 19/08 (2013.01); C07C 19/10 (2013.01);
Abstract
To provide a method for obtaining 1,1-dichloro-3,3,3-trifluoropropane by reacting 1,1-difluoroethylene with dichlorofluoromethane, which suppresses the production of chloroform as a by-product and achieves a product having a high R-243fa concentration. This method is characterized by obtaining 1,1-dichloro-3,3,3-trifluoropropane by reacting 1,1-difluoroethylene with dichlorofluoromethane in the presence of trifluoromethane.