GB864772A - Process for the manufacture of polyethylenes - Google Patents
Process for the manufacture of polyethylenesInfo
- Publication number
- GB864772A GB864772A GB1906457A GB1906457A GB864772A GB 864772 A GB864772 A GB 864772A GB 1906457 A GB1906457 A GB 1906457A GB 1906457 A GB1906457 A GB 1906457A GB 864772 A GB864772 A GB 864772A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cyclopentadienyl
- bis
- titanium
- chloride
- polymerization
- 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
Polyethylene of molecular weight below 100,000 is made by polymerizing ethylene in the presence of hydrogen and a catalyst system comprising a bis-cyclopentadienyl-titanium compound and an organometallic compound of a metal of Group 1(a), II(a), II(b) and III(a) of the Mendeleeff Periodic Table. The polymerization is preferably effected in the presence of an inert diluent. The polymerization may also be effected in the presence of a small amount of oxygen. Exemplified bis-cyclopentadienyl-titanium compounds are bis-cyclopentadienyl-titanium dichloride, bis-cyclopentadienyl-dimethyl-titanium, and bis-cyclopentadienyl-methyl-titanium chloride. The preferred organo-metallic compounds are of the type R3Al, R2 Al Cl, and R Al Cl2 where R is an alkyl group of 1 to 8 carbon atoms. Exemplified organometallic compounds are dimethyl and dimethylaluminium chloride. The inert diluent may be pentane, hexane, benzene, toluene, ethyl-benzene, xylenes tetrahydronaphthalene, chlorobenzene, chloronaphthalene, methylene chloride, butyl chloride, and dichlorethane. A small proportion of oxygen may also be added to the polymerization system. The polyethylene may be purified by treatment with an alcohol such as methanol or butanol, or acetone, or an ether, and if desired steam distilled under acid, neutral, or alkaline conditions. Specifications 799,392, 799,823 and 801,031 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF20534A DE1083053B (en) | 1956-06-15 | 1956-06-15 | Process for the production of unbranched polyethylenes |
Publications (1)
Publication Number | Publication Date |
---|---|
GB864772A true GB864772A (en) | 1961-04-06 |
Family
ID=7089717
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1906457A Expired GB864772A (en) | 1956-06-15 | 1957-06-17 | Process for the manufacture of polyethylenes |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1083053B (en) |
GB (1) | GB864772A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2608863A1 (en) * | 1976-03-04 | 1977-09-08 | Basf Ag | Ethylene polymerisation using Ziegler catalyst system - contg. bis-cyclopentadienyl-titanium di-alkyl cpd., aluminium tri-alkyl cpd. and water |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
LU33749A1 (en) * | 1954-08-16 |
-
1956
- 1956-06-15 DE DEF20534A patent/DE1083053B/en active Pending
-
1957
- 1957-06-17 GB GB1906457A patent/GB864772A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1083053B (en) | 1960-06-09 |
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