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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.:

US 11826596 B1

PDFFull Text
Date of Patent:
Nov. 28, 2023

Filed:

Oct. 07, 2021

Azeotropic or azeotropic-like composition comprising hydrogen fluoride and 1,1,2-trifluoroethane, 1-chloro-2,2-difluoroethane, or 1,2-dichloro-1-fluoroethane

Applicant:

Daikin Industries, Ltd., Osaka, JP;

Inventor:

Kazuhiro Takahashi, Osaka, JP;

Assignee:

DAIKIN INDUSTRIES, LTD., Osaka, JP;

Attorney:

Wenderoth, Lind & Ponack, L.L.P.

Primary Examiner:

Joseph D Anthony

Int. Cl.
CPC ...
A62D 1/00 (2006.01); B01D 3/14 (2006.01); B01D 3/36 (2006.01); C07C 17/383 (2006.01); C08J 9/12 (2006.01); C08J 9/14 (2006.01); C09K 3/14 (2006.01); C09K 3/30 (2006.01); C09K 5/04 (2006.01); C11D 7/50 (2006.01); H01B 3/56 (2006.01);
U.S. Cl.
CPC ...
A62D 1/0057 (2013.01); B01D 3/143 (2013.01); B01D 3/36 (2013.01); C07C 17/383 (2013.01); C08J 9/127 (2013.01); C08J 9/146 (2013.01); C09K 3/1472 (2013.01); C09K 3/30 (2013.01); C09K 5/045 (2013.01); C11D 7/5018 (2013.01); C11D 7/5036 (2013.01); H01B 3/56 (2013.01); C08J 2203/142 (2013.01); C08J 2203/182 (2013.01); C09K 2205/122 (2013.01); C09K 2205/22 (2013.01); C09K 2205/32 (2013.01);
Abstract

The present disclosure provides a novel azeotropic or azeotrope-like composition comprising hydrogen fluoride and 1,1,2-trifluoroethane (HFC-143), 1-chloro-2,2-difluoroethane (HCFC-142), or 1,2-dichloro-1-fluoroethane (HCFC-141); and a separation method using the composition. An azeotropic or azeotrope-like composition comprising hydrogen fluoride and HFC-143. An azeotropic or azeotrope-like composition comprising hydrogen fluoride and HCFC-142. An azeotropic or azeotrope-like composition comprising hydrogen fluoride and HCFC-141. A separation method of a composition comprising hydrogen fluoride and at least one member selected from the group consisting of HFC-143, HCFC-142, and HCFC-141.

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