GB585814A - Production of solid and semi-solid polymers and interpolymers of ethylene - Google Patents
Production of solid and semi-solid polymers and interpolymers of ethyleneInfo
- Publication number
- GB585814A GB585814A GB853/44A GB85344A GB585814A GB 585814 A GB585814 A GB 585814A GB 853/44 A GB853/44 A GB 853/44A GB 85344 A GB85344 A GB 85344A GB 585814 A GB585814 A GB 585814A
- Authority
- GB
- United Kingdom
- Prior art keywords
- formamide
- acetylene
- vinyl
- ethylene
- per
- 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
- C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Ethylene containing acetylene is purified by spraying dimethyl or diethyl formamide into the top of a scrubbing tower operating at 20 to 200 lbs. per square inch pressure, the ethylene flowing countercurrent to the downwardly flowing formamide. Acetylene is removed by fractionation and the formamide recycled. Specifications 471,590, 497,643 and 578,584, [all in Group IV], are referred to.ALSO:Ethylene containing not more than 0.1 per cent by volume of acetylene is polymerized at elevated temperature and pressure in the presence of oxygen or a per-compound. The acetylene may be removed by spraying dimethyl or diethyl formamide into the top of a scrubbing tower operating at 20 to 200 pounds per square inch pressure, the ethylene flowing counter-current to the downwardly flowing formamide. Acetylene is removed by fractionation and the formamide recycled. Alternatively, the gas may be mildly hydrogenated. Suitable per-compounds are hydrogen, diethyl, lauryl, urea, butyryl, benzoyl and tetrahydronaphthalene peroxides; persuccinic acid; alkali metal, alkaline earth metal and ammonium persulphates, perborates and percarbonates. Polymerization may be effected in the presence of water, benzene, iso-octane or chlorobenzene. Interpolymers may be formed with propylene, isobutylene, styrene; vinyl formate, acetate and isobutyrate; acrylic, methacrylic, itaconic, crotonic and fumaric acids, their esters, acid halides, amides and anhydrides; vinyl and vinylidene chlorides; vinyl cyanide, N-vinyl amides, vinyl ethers, divinyl formal, divinyl butyral and methyl vinyl ketone. Specifications 471,590, 497,643 and 578,584 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US585814XA | 1943-01-16 | 1943-01-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB585814A true GB585814A (en) | 1947-02-25 |
Family
ID=22017714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB853/44A Expired GB585814A (en) | 1943-01-16 | 1944-01-17 | Production of solid and semi-solid polymers and interpolymers of ethylene |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB585814A (en) |
-
1944
- 1944-01-17 GB GB853/44A patent/GB585814A/en not_active Expired
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