GB1473807A - Process for producing perfluorocarboxylic acid - Google Patents

Process for producing perfluorocarboxylic acid

Info

Publication number
GB1473807A
GB1473807A GB5170475A GB5170475A GB1473807A GB 1473807 A GB1473807 A GB 1473807A GB 5170475 A GB5170475 A GB 5170475A GB 5170475 A GB5170475 A GB 5170475A GB 1473807 A GB1473807 A GB 1473807A
Authority
GB
United Kingdom
Prior art keywords
ozonide
olefin
perfluoroalkyl
cooh
molar ratio
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.)
Expired
Application number
GB5170475A
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.)
AGC Inc
Original Assignee
Asahi 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 Asahi Glass Co Ltd filed Critical Asahi Glass Co Ltd
Publication of GB1473807A publication Critical patent/GB1473807A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D323/00—Heterocyclic compounds containing more than two oxygen atoms as the only ring hetero atoms
    • C07D323/02—Five-membered rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/40—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with ozone; by ozonolysis
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C47/00—Compounds having —CHO groups
    • C07C47/02—Saturated compounds having —CHO groups bound to acyclic carbon atoms or to hydrogen
    • C07C47/14—Saturated compounds having —CHO groups bound to acyclic carbon atoms or to hydrogen containing halogen
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/285—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with peroxy-compounds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/34—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with ozone; by hydrolysis of ozonides

Abstract

1473807 Perfluorocarboxylic acids ASAHI GLASS CO Ltd 17 Dec 1975 51704/75 Heading C2C Perfluorocarboxylic acids are prepared by reacting at least one perfluoroalkyl olefin with ozone to produce a petfluoroalkyl ozonide and a perfluoroalkyl aldehyde and converting these intermediates to perfluorocarboxylic acid with an oxidizing agent. The production and the conversion of the ozonide are preferably performed in distinct steps. The reactant olefin preferably has the formula RfCH = CR<SP>1</SP>R<SP>2</SP> ,where Rf is a C 4-18 perfluoroalkyl group and R<SP>1</SP> and R<SP>2</SP>, same or different, are H or alkyl. The first oxidation stage is preferably conducted with O 3 containing O 2 or air, in the presence of an inert organicsolvent at 0-120‹ C. with an O 3 : olefin molar ratio of 1 : 1 to 3 : 1. In the second stage H 2 O 2 or a peracid may be employed as oxidizing agent with a molar ratio of agent to ozonide plus aldehyde of 1-10 at 0-150‹ C. Amongst the examples C 8 F 17 COOH and C 6 F 13 COOH are produced.
GB5170475A 1975-12-12 1975-12-17 Process for producing perfluorocarboxylic acid Expired GB1473807A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7538067A FR2346313A1 (en) 1975-12-12 1975-12-12 PROCESS FOR PREPARATION OF PERFLUOROCARBOXYLIC ACIDS

Publications (1)

Publication Number Publication Date
GB1473807A true GB1473807A (en) 1977-05-18

Family

ID=9163666

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5170475A Expired GB1473807A (en) 1975-12-12 1975-12-17 Process for producing perfluorocarboxylic acid

Country Status (2)

Country Link
FR (1) FR2346313A1 (en)
GB (1) GB1473807A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998024744A1 (en) * 1996-12-04 1998-06-11 Bayer Aktiengesellschaft Polyhalogen hexenes production thereof and production of halogenated c4 carboxylic acids from these compounds

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998024744A1 (en) * 1996-12-04 1998-06-11 Bayer Aktiengesellschaft Polyhalogen hexenes production thereof and production of halogenated c4 carboxylic acids from these compounds

Also Published As

Publication number Publication date
FR2346313A1 (en) 1977-10-28
FR2346313B1 (en) 1979-07-27

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19921217