Title of Invention	"A PROCESS FOR PREPARING 2,3,3,3 TETRAFLUOROPROPENE"
Abstract	The present invention provides a process for its preparation comprising (a) converting 1,1,1-trifluoro-2,3-dichloropropane (243db) to 3,3,3-trifluoro-2-chloro-prop-1-ene (CF3CCI=CH2) in the presence of a first catalyst in a first reactor, (b) contacting CF3CCI=CH2 with a fluorinating agent in the presence of a second catalyst in a second reactor to produce a compound of formula CF3CFXCH3, wherein X = CI or F, and (c) dehydrohalogenating the compound of formula CF3CFXCH3 to produce 2,3,3,3-tetrafluoropropene (1234yf).

Title of Invention

"A PROCESS FOR PREPARING 2,3,3,3 TETRAFLUOROPROPENE"

Abstract

The present invention provides a process for its preparation comprising (a) converting 1,1,1-trifluoro-2,3-dichloropropane (243db) to 3,3,3-trifluoro-2-chloro-prop-1-ene (CF3CCI=CH2) in the presence of a first catalyst in a first reactor, (b) contacting CF3CCI=CH2 with a fluorinating agent in the presence of a second catalyst in a second reactor to produce a compound of formula CF3CFXCH3, wherein X = CI or F, and (c) dehydrohalogenating the compound of formula CF3CFXCH3 to produce 2,3,3,3-tetrafluoropropene (1234yf).

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Patent Number

270077

Indian Patent Application Number

7188/DELNP/2010

PG Journal Number

49/2015

Publication Date

04-Dec-2015

Grant Date

27-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 17/25

PCT International Application Number

PCT/GB2009/000948

PCT International Filing date

2009-04-09

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	0806422.2	2008-04-09	U.K.