GB866679A - Process for the manufacture of high molecular polyethylene - Google Patents
Process for the manufacture of high molecular polyethyleneInfo
- Publication number
- GB866679A GB866679A GB5466/58A GB546658A GB866679A GB 866679 A GB866679 A GB 866679A GB 5466/58 A GB5466/58 A GB 5466/58A GB 546658 A GB546658 A GB 546658A GB 866679 A GB866679 A GB 866679A
- Authority
- GB
- United Kingdom
- Prior art keywords
- compound
- metal
- aluminium
- methyl
- valency
- 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)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
Abstract
Ethylene is polymerized in a low pressure polymerization process by introducing into a reaction vessel containing in an inert solvent a compound of a metal of Group 4a, 5a or 6a, the metal in this compound having a valency lower than its maximum valency and before or at the start of the polymerization adding a mixture of a methyl-aluminium organic compound and a compound of a metal of Group 4a, 5a or 6a, the metal in this compound having the maximum valency. The mixture of catalyst compounds may be added gradually or continuously to the polymerization batch, while the compound of a metal of lower valency may be prepared in a separate process by reduction of a compound containing the metal in its maximum valency. The catalyst mixture may be of a methyl-aluminium compound and a compound of tetravalent titanium, e.g. dimethyl aluminium monochloride titanium tetrachloride. The ethylene may be first introduced into a catalyst mixture of the methyl-aluminium compound, a tetravalent titanium compound and a trivalent titanium compound, and a catalyst mixture of a methyl-aluminium compound and a compound of tetravalent titanium added later. Specifications 799,392, 799,823, 801,031, 828,201 and 828,692 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE866679X | 1957-02-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB866679A true GB866679A (en) | 1961-04-26 |
Family
ID=6802033
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5466/58A Expired GB866679A (en) | 1957-02-19 | 1958-02-19 | Process for the manufacture of high molecular polyethylene |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB866679A (en) |
NL (1) | NL224925A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3509117A (en) * | 1966-04-30 | 1970-04-28 | Hoechst Ag | Process for the manufacture of polyolefins having a broad molecular weight distribution |
-
0
- NL NL224925D patent/NL224925A/xx unknown
-
1958
- 1958-02-19 GB GB5466/58A patent/GB866679A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3509117A (en) * | 1966-04-30 | 1970-04-28 | Hoechst Ag | Process for the manufacture of polyolefins having a broad molecular weight distribution |
Also Published As
Publication number | Publication date |
---|---|
NL224925A (en) |
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