GB768949A - Manufacture of polyfluorethyl ether condensation products - Google Patents

Manufacture of polyfluorethyl ether condensation products

Info

Publication number
GB768949A
GB768949A GB6576/54A GB657654A GB768949A GB 768949 A GB768949 A GB 768949A GB 6576/54 A GB6576/54 A GB 6576/54A GB 657654 A GB657654 A GB 657654A GB 768949 A GB768949 A GB 768949A
Authority
GB
United Kingdom
Prior art keywords
partial
mixed
ether
acetals
condensation products
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
GB6576/54A
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.)
Consortium fuer Elektrochemische Industrie GmbH
Original Assignee
Consortium fuer Elektrochemische Industrie GmbH
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 Consortium fuer Elektrochemische Industrie GmbH filed Critical Consortium fuer Elektrochemische Industrie GmbH
Publication of GB768949A publication Critical patent/GB768949A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F8/00—Chemical modification by after-treatment
    • C08F8/18—Introducing halogen atoms or halogen-containing groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

Polyfluoroethyl ether condensation products are produced by condensation in aqueous alkali of a polyhydric polymer and a polyfluorochlorethane of formula C2HxFyClz, wherein x+y+z equals 6 and y is at least 2. Polymers specified are polyvinyl alcohol and its partial esters, acetals, mixed esters, mixed acetals and ester/acetals; and cellulose or partial esters thereof. Increased concentration of alkali gives increased etherification. The products obtained may be recovered as flakes or granular powders or pellets. The ethers may be further modified by partial or total or mixed esterification and acetalization, e.g. using acetaldehyde, acetic anhydride/sulphuric acid or nitric acid.ALSO:Polyfluoroethyl ether condensation products are produced by condensation in aqueous alkali of dextrin, or a partial ether thereof, and a polyfluorochlorethane of formula C2HxFyClz, wherein X + Y + Z equals 6 and Y is at least 2. Increased concentration of alkali gives increased etherification. The ethers obtained may be further modified by partial or total or mixed esterification and acetalization.
GB6576/54A 1953-03-13 1954-03-05 Manufacture of polyfluorethyl ether condensation products Expired GB768949A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE768949X 1953-03-13

Publications (1)

Publication Number Publication Date
GB768949A true GB768949A (en) 1957-02-27

Family

ID=6673857

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6576/54A Expired GB768949A (en) 1953-03-13 1954-03-05 Manufacture of polyfluorethyl ether condensation products

Country Status (1)

Country Link
GB (1) GB768949A (en)

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