GB770507A - Improvements in or relating to ethylene polymerization - Google Patents
Improvements in or relating to ethylene polymerizationInfo
- Publication number
- GB770507A GB770507A GB15363/55A GB1536355A GB770507A GB 770507 A GB770507 A GB 770507A GB 15363/55 A GB15363/55 A GB 15363/55A GB 1536355 A GB1536355 A GB 1536355A GB 770507 A GB770507 A GB 770507A
- Authority
- GB
- United Kingdom
- Prior art keywords
- modifier
- diluent
- gas
- free
- ethylene
- 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
In preparing polyethylene from crude lowpurity ethylene gas containing 30-70 per cent by volume of ethylene, the remainder being chiefly ethane with a trace of oxygen, the oxygen content is reduced to below 0.03 per cent and polymerization effected at 50 DEG to 200 DEG C. under 1000-25,000 lb./sq. inch pressure in the presence of a diluent-modifier and a peroxy catalyst. The gas may be de-oxidized to the required level by passage through a hot tube packed with copper granules. A diluent-modifier such as an aliphatic or aromatic hydrocarbon having 6 to 8 carbon atoms and free from aliphatic unsaturation such as hexane, n-heptane, iso-octane and benzene, and a catalyst such as t-butyl, benzoyl and cyclohexanone peroxides and cumene hydroperoxide are added to the de-oxidized gas and the mixture continuously polymerized, e.g. at 148 DEG C. and 300 lb./sq. inch. The diluent, free from formaldehyde, is stripped from the resulting polymer which has a molecular weight of 1500 to 5000 Staudinger and may be used as a modifier for waxes and petroleum products.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US770507XA | 1954-06-22 | 1954-06-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB770507A true GB770507A (en) | 1957-03-20 |
Family
ID=22135786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15363/55A Expired GB770507A (en) | 1954-06-22 | 1955-05-27 | Improvements in or relating to ethylene polymerization |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB770507A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2928818A (en) * | 1957-07-01 | 1960-03-15 | Eastman Kodak Co | Process of polymerizing ethylene with aluminum-titanium halide catalyst |
| US3142666A (en) * | 1959-03-05 | 1964-07-28 | Monsanto Co | Ethylene polymerization utilizing two organic peroxygen compounds as catalysts |
| WO1980002387A1 (en) * | 1979-05-02 | 1980-11-13 | Goodrich Co B F | Improved process for removal and recovery of vinyl chloride monomer from vent gas stream in polyvinyl chloride plant |
-
1955
- 1955-05-27 GB GB15363/55A patent/GB770507A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2928818A (en) * | 1957-07-01 | 1960-03-15 | Eastman Kodak Co | Process of polymerizing ethylene with aluminum-titanium halide catalyst |
| US3142666A (en) * | 1959-03-05 | 1964-07-28 | Monsanto Co | Ethylene polymerization utilizing two organic peroxygen compounds as catalysts |
| WO1980002387A1 (en) * | 1979-05-02 | 1980-11-13 | Goodrich Co B F | Improved process for removal and recovery of vinyl chloride monomer from vent gas stream in polyvinyl chloride plant |
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