JPS6461443A - Production of fluorocarboncarboxylic acid - Google Patents

Production of fluorocarboncarboxylic acid

Info

Publication number
JPS6461443A
JPS6461443A JP21519787A JP21519787A JPS6461443A JP S6461443 A JPS6461443 A JP S6461443A JP 21519787 A JP21519787 A JP 21519787A JP 21519787 A JP21519787 A JP 21519787A JP S6461443 A JPS6461443 A JP S6461443A
Authority
JP
Japan
Prior art keywords
solution
koh
acid
formula
salt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP21519787A
Other languages
Japanese (ja)
Other versions
JPH07100676B2 (en
Inventor
Minoru Aramaki
Hiroaki Sakaguchi
Tamio Nakamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Central Glass Co Ltd
Original Assignee
Central Glass Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Central Glass Co Ltd filed Critical Central Glass Co Ltd
Priority to JP62215197A priority Critical patent/JPH07100676B2/en
Priority to US07/237,072 priority patent/US4927962A/en
Priority to DE3829409A priority patent/DE3829409C2/en
Priority to IT8821796A priority patent/IT1226426B/en
Publication of JPS6461443A publication Critical patent/JPS6461443A/en
Publication of JPH07100676B2 publication Critical patent/JPH07100676B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PURPOSE:To obtain the aimed high-purity compound at a low cost, by hydrolyzing a fluorocarboxylic acid chloride, then adding a KOH circulating solution, adding an alkaline metal hydroxide, etc., to the resultant salt, recirculating the obtained solution as a circulating solution and decomposing the above- mentioned salt with an acid. CONSTITUTION:A fluorocarboxylic acid chloride production formula I (Rf is 1-10C saturated or unsaturated perfluoroalkyl; m is 1 or 2) is hydrolyzed with water and a KOH circulation solution is added to neutralize the hydrolyzate solution. The neutralized solution is subsequently concentrated and cooled to deposit and separate a salt expressed by formula II. An alkaline (earth) metal hydroxide, such as NaOH or Ca(OH)2, is added to the separated solution to separate the deposited fluoride. KOH is then added to the solution after separating the deposited fluoride and recirculated as the KOH circulating solution. The obtained salt expressed by formula II is then decomposed with an acid, such as sulfuric acid, to recover the obtained fluorocarboxylic acid by distillation, etc. Thereby the aimed high-purity compound, expressed by formula III and useful as a raw material for various organic compounds is obtained.
JP62215197A 1987-08-31 1987-08-31 Method for producing fluorcarbone carboxylic acid Expired - Fee Related JPH07100676B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP62215197A JPH07100676B2 (en) 1987-08-31 1987-08-31 Method for producing fluorcarbone carboxylic acid
US07/237,072 US4927962A (en) 1987-08-31 1988-08-29 Process of preparing fluorocarbon carboxylic or sulfonic acid from its fluoride
DE3829409A DE3829409C2 (en) 1987-08-31 1988-08-30 Process for the preparation of fluorocarboxylic acids or -sulfonic acids
IT8821796A IT1226426B (en) 1987-08-31 1988-08-31 Satd. or unsatd. per:fluoro-carbon carboxylic or sulphonic acid prodn.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62215197A JPH07100676B2 (en) 1987-08-31 1987-08-31 Method for producing fluorcarbone carboxylic acid

Publications (2)

Publication Number Publication Date
JPS6461443A true JPS6461443A (en) 1989-03-08
JPH07100676B2 JPH07100676B2 (en) 1995-11-01

Family

ID=16668294

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62215197A Expired - Fee Related JPH07100676B2 (en) 1987-08-31 1987-08-31 Method for producing fluorcarbone carboxylic acid

Country Status (1)

Country Link
JP (1) JPH07100676B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016021441A1 (en) * 2014-08-08 2016-02-11 ユニマテック株式会社 Mixture of polyfluoroalkene carboxylic acid or salt thereof and production method therefor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2996147B1 (en) * 2012-10-03 2015-05-29 Rhodia Operations PROCESS FOR TREATING FLUID ACID

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016021441A1 (en) * 2014-08-08 2016-02-11 ユニマテック株式会社 Mixture of polyfluoroalkene carboxylic acid or salt thereof and production method therefor
US9873654B2 (en) 2014-08-08 2018-01-23 Unimatec Co., Ltd. Mixture of polyfluoroalkene carboxylic acids or salts thereof and process for producing the same

Also Published As

Publication number Publication date
JPH07100676B2 (en) 1995-11-01

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees