PRODUCTION METHOD FOR 1,1-DICHLORO-2,3,3,3-TETRA-FLUOROPROPENE AND 2,3,3,3-TETRAFLUOROPROPENE

WIPO Patent Application WO/2011/162336

A1

Disclosed is a method for easily and economically producing 1,1-dichloro-2,3,3,3-tetra-fluoropropene (CFO-1214ya) that does not require the purification of a raw material component that has been prepared as an isomer mixture, i.e 1,1-dichloro-2,2,3,3,3 -pentafluoropropane (HCFC-225ca) from dichloropenta-fluoropropane (HCFC-225) which contains HCFC-225ca. Also disclosed is a method for easily and economically producing 2,3,3,3-tetrafluoropropene (HFO-1234yf) from 1-chloro-2,3,3,3-tetrafluoropropene (HCFC-244eb). CFO-1214ya is produced from HCFC-225ca and HFO-1234yf is produced from HCFC-224eb, by bringing a raw material composition that includes HCFC-244eb and HCFC-225, which contains HCFC-225ca, into contact with an aqueous alkali solution in the presence of a phase transfer catalyst.

SEKI RYUJI (JP)
OKAMOTO HIDEKAZU (JP)
TAKAGI HIROKAZU (JP)
KAWAGUCHI SATOSHI (JP)

PCT/JP2011/064422

December 29, 2011

June 23, 2011

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ASAHI GLASS CO LTD (JP)
SEKI RYUJI (JP)
OKAMOTO HIDEKAZU (JP)
TAKAGI HIROKAZU (JP)
KAWAGUCHI SATOSHI (JP)

C07C17/25; C07C17/383; C07C21/18

WO2009125201A2	2009-10-15
WO2010013576A1	2010-02-04

JPH08169850A	1996-07-02
JP2010513437A	2010-04-30
JP2010510221A	2010-04-02
JP3778298B2	2006-05-24
US5157171A	1992-10-20
JP2010142279A	2010-07-01

PAUL TARRANT: "Fluorine Chemistry Reviews", vol. 8, 1967, MARCEL DEKKER, INC., pages: 39 - 71

SENMYO, Kenji et al. (JP)
Spring name Kenji (JP)

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