ES389126A1 - Cyclic perfluoropolyethers - Google Patents

Cyclic perfluoropolyethers

Info

Publication number
ES389126A1
ES389126A1 ES389126A ES389126A ES389126A1 ES 389126 A1 ES389126 A1 ES 389126A1 ES 389126 A ES389126 A ES 389126A ES 389126 A ES389126 A ES 389126A ES 389126 A1 ES389126 A1 ES 389126A1
Authority
ES
Spain
Prior art keywords
value
cf2o
integers
sum
zero
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
ES389126A
Other languages
Spanish (es)
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.)
Montedison SpA
Original Assignee
Montedison SpA
Montecatini Edison SpA
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 Montedison SpA, Montecatini Edison SpA filed Critical Montedison SpA
Publication of ES389126A1 publication Critical patent/ES389126A1/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M3/00—Liquid compositions essentially based on lubricating components other than mineral lubricating oils or fatty oils and their use as lubricants; Use as lubricants of single liquid substances
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2213/04—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions obtained from monomers containing carbon, hydrogen, halogen and oxygen
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2213/06—Perfluoro polymers
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2050/00—Form in which the lubricant is applied to the material being lubricated
    • C10N2050/10—Semi-solids; greasy

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Polyethers (AREA)
  • Fire-Extinguishing Compositions (AREA)

Abstract

Procedure for the preparation of cyclic perfluoropolyethers corresponding to the following general formula ** (See formula) ** where a and b can be zero or integers between 1 and 20, the sum (a + b) is a number from 2 to 30, and mixtures of these, characterized in that a linear perfluoropolyether of the general formula A - O - (CF2-CF2O-) p- (CF2O) Q- (O) S-B in which the recurring units have a random distribution along the polymer chain; P and Q are integers between 1 and 150 with the sum (P + Q) having a value from a few units to 200; O is a peroxidic oxygen atom; S can be zero or an integer such that the S/P + Q ratio has a value of 0 to 0.5; the P/Q ratio has a value of 0.2 to 5; A and B, which may be the same or different, are terminal groups selected from -CF3, -C2F5, -CF2H, -COF, -CF22COX where X is -F, -OH, -NH2, -NHR, -OR, where R is an alcoholic containing 1 to 8 carbon atoms, for example methyl, ethyl, etc., is subjected to a decomposition reaction. (Machine-translation by Google Translate, not legally binding)
ES389126A 1970-03-12 1971-03-11 Cyclic perfluoropolyethers Expired ES389126A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2182570 1970-03-12

Publications (1)

Publication Number Publication Date
ES389126A1 true ES389126A1 (en) 1973-06-01

Family

ID=11187378

Family Applications (1)

Application Number Title Priority Date Filing Date
ES389126A Expired ES389126A1 (en) 1970-03-12 1971-03-11 Cyclic perfluoropolyethers

Country Status (6)

Country Link
CA (1) CA958021A (en)
DE (1) DE2111696A1 (en)
ES (1) ES389126A1 (en)
FR (1) FR2084474A5 (en)
GB (1) GB1349723A (en)
NL (1) NL7103057A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4399264A (en) * 1981-11-19 1983-08-16 E. I. Du Pont De Nemours & Co. Perfluorodioxole and its polymers
US5025093A (en) * 1985-11-08 1991-06-18 Exfluor Research Corporation Pyrolysis of perfluoropolyethers
US5134211A (en) * 1990-01-31 1992-07-28 E. I. Du Pont De Nemours And Company Hydroxy containing fluorovinyl compounds and polymers thereof
FR2912418B1 (en) * 2007-02-12 2012-10-26 Arkema France REFRIGERANT FLUID BASED ON CYCLIC DIETHER.
CN104619319A (en) 2012-07-10 2015-05-13 加利福尼亚大学董事会 Methods of inducing anesthesia

Also Published As

Publication number Publication date
GB1349723A (en) 1974-04-10
DE2111696A1 (en) 1972-01-27
FR2084474A5 (en) 1971-12-17
NL7103057A (en) 1971-09-14
CA958021A (en) 1974-11-19

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