Isomerization of 1-chloro-3,3,3-trifluoropropene

US8217208B2 · kind B2 · utility

Assignee

• HONEYWELL INTERNATIONAL INC. · US

Inventors

• Ryan Hulse · Getzville, US
• Rajiv R. Singh · Getzville, US
• Konstantin A. Pokrovski · Orchard Park, US
• Hsueh Sung Tung · Getzville, US
• Daniel C. Merkel · West Seneca, US
• Haiyou Wang · Amherst, US
• Michael Van Der Puy · Amherst, US

Key dates

• Filing date: Dec 8, 2009
• Grant date: Jul 10, 2012
• Expiry date: Feb 2, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C17/383
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Disclosed are processes for an isomerization reaction between (E)1-chloro-3,3,3-trifluoropropene and (Z)1-chloro-3,3,3-trifluoropropene. Some of the disclosed processes include the step of contacting a feed stream with a heated surface, where the feed stream includes (E)1-chloro-3,3,3-trifluoropropene, (Z)1-chloro-3,3,3-trifluoropropene or mixtures thereof. The resulting product stream includes (E)1-chloro-3,3,3-trifluoropropene and (Z)1-chloro-3,3,3-trifluoropropene, where the ratio of (E) isomer to (Z) isomer in the product stream is different than the ratio feed stream. The (E) and (Z) isomers in the product stream may be separated from one another.