GB824003A - Improvements in preparation of polyethylene - Google Patents
Improvements in preparation of polyethyleneInfo
- Publication number
- GB824003A GB824003A GB1037/57A GB103757A GB824003A GB 824003 A GB824003 A GB 824003A GB 1037/57 A GB1037/57 A GB 1037/57A GB 103757 A GB103757 A GB 103757A GB 824003 A GB824003 A GB 824003A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tetrahalide
- catalyst
- alkali metal
- hydride
- suspension
- 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)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
Abstract
A catalyst for the polymerization of ethylene consists of a mixture prepared by heating a tetrahalide of titanium, zirconium, hafnium or thorium with an alkali metal or an alkali metal hydride at between 100 DEG and 250 DEG C., the molar ratio of metal or hydride to tetrahalide being not less than two. The catalyst may be prepared by adding tetrahalide to a suspension of the other substance in an inert liquid, e.g. mineral oil or other liquid hydrocarbon such as benzene. U.S.A. Specification 2,720,444 is referred to.ALSO:Ethylene is polymerized at between 150 DEG C. and 250 DEG C. using as catalyst a mixture prepared by heating a tetrahalide of titanium, zirconium, hafnium or thorium with an alkali metal or an alkali metal hydride at between 100 DEG and 250 DEG C., the molar ratio of metal or hydride to tetrahalide being not less than two. The catalyst is usually prepared by adding the tetrahalide to a suspension of the other material in an inert liquid, e.g. mineral oil, and other liquid hydrocarbons such as benzene and the suspension produced may be used as such in the polymerization reaction. U.S.A. Specification 2,720,444 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US824003XA | 1956-01-10 | 1956-01-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB824003A true GB824003A (en) | 1959-11-25 |
Family
ID=22170956
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1037/57A Expired GB824003A (en) | 1956-01-10 | 1957-01-10 | Improvements in preparation of polyethylene |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB824003A (en) |
-
1957
- 1957-01-10 GB GB1037/57A patent/GB824003A/en not_active Expired
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