Indian Patents
Title of Invention

"PROCESS"
Abstract The invention provides a process for the preparation of 2,3,3,3-tetrafluoropropene (1234yf) comprising (a) contacting 1,1,1-trifluoro-2,3-difluoropropane (243db) with hydrogen fluoride (HF) in the presence of a zinc/chromia catalyst to produce a compound having the formula CF3CHFCH2X, wherein X is CI or F, and (b) dehydrohalogenating the compound of formula CF3CHFCH2X to produce 1234yf.
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Patent Number 269914
Indian Patent Application Number 7189/DELNP/2010
PG Journal Number 47/2015
Publication Date 20-Nov-2015
Grant Date 18-Nov-2015
Date of Filing 11-Oct-2010
Name of Patentee MEXICHEM AMANCO HOLDING S.A. DE C.V.
Applicant Address RIO SAN JAVIER NO. 10, FRACCIONAMIENTO, VIVEROS DEL RIO, TLALNEPANTLA, ESTADO DE MEXICO C.P. 54060 MEXICO.
Inventors:
# Inventor's Name Inventor's Address
1 SMITH JOHN WILLIAM MEXICHEM UK LIMITED, RUNCORN TECHICAL CENTRE, P.O. BOX 8, THE HEATH, RUNCORN, CHESHIRE, WA7 4QD UNITED KINGDOM.
2 MCGUINESS CLAIRE MEXICHEM UK LIMITED, RUNCORN TECHICAL CENTRE, P.O. BOX 8, THE HEATH, RUNCORN, CHESHIRE, WA7 4QD UNITED KINGDOM.
3 SHARRATT ANDREW PAUL MEXICHEM UK LIMITED, RUNCORN TECHICAL CENTRE, P.O. BOX 8, THE HEATH, RUNCORN, CHESHIRE, WA7 4QD UNITED KINGDOM.
PCT International Classification Number C07C 17/20
PCT International Application Number PCT/GB2009/000950
PCT International Filing date 2009-04-09
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 0806389.3 2008-04-09 U.K.