GB768949A - Manufacture of polyfluorethyl ether condensation products - Google Patents
Manufacture of polyfluorethyl ether condensation productsInfo
- 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
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.
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) |
-
1954
- 1954-03-05 GB GB6576/54A patent/GB768949A/en not_active Expired
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