GB834161A - Improvements in the production of polyethylene - Google Patents
Improvements in the production of polyethyleneInfo
- Publication number
- GB834161A GB834161A GB790858A GB790858A GB834161A GB 834161 A GB834161 A GB 834161A GB 790858 A GB790858 A GB 790858A GB 790858 A GB790858 A GB 790858A GB 834161 A GB834161 A GB 834161A
- Authority
- GB
- United Kingdom
- Prior art keywords
- group
- iia
- iiib
- alcoholate
- metal
- 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 polymerization catalyst comprises (1) a Group Ia, IIa, IIb or IIIb metal, (2) a Group Ia, IIa or IIIb alcoholate, and (3) a Group IVa-VIa chlorine-containing compound. Preferred features are: (a) the said metal is Al, the said compound TiCl4 and use is made of an inert organic solvent, e.g. aliphatic, cycloaliphatic or aromatic hydrocarbons, as well as halogenated hydrocarbons, octane, cyclohexane, dimethylcyclohexane, decahydronaphthalene, benzene, toluene, xylene and tetrachloroethylene being specified; (b) the catalyst mixture is heated to 50-200 DEG C. prior to polymerization; (c) dry hydrogen halide is led into the catalyst mixture, (d) the said alcoholate is Mg or Al ethylate or Na methylate. Components also mentioned are: (1) Na, Mg, Zn, Cd, (2) Al, butyrate and octylate, (3) Cl3TiOEt, VCl4, CrO2Cl2.ALSO:Ethylene is polymerized (preferably at 70-130 DEG C. and 10-150 atm. and in presence of an inert organic solvent) by means of a catalyst comprising: (a) a Group Ia, IIa, IIb or IIIb metal such as Al; (b) a Group Ia, IIa or IIIb alcoholate such as Na methylate or Mg or Al ethylate; (c) a Group IVa-VIa chlorine-containing compound such as TiCl4 (see Group III). The solvent is preferably octane or decahydronaphthalene, but cyclohexane, dimethylcyclohexane, benzene, toluene, xylene and tetrachloroethylene are also specified. The polyethylene is isolated using water and/or dilute acids (e.g. oxalic acid) and/or alcohols, ethers and ketones. In examples, the products have molecular weights of 40,000-215,000.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB43889A DE1060597B (en) | 1957-03-14 | 1957-03-14 | Process for the polymerization of olefins |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB834161A true GB834161A (en) | 1960-05-04 |
Family
ID=6967176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB790858A Expired GB834161A (en) | 1957-03-14 | 1958-03-12 | Improvements in the production of polyethylene |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE1060597B (en) |
| FR (1) | FR1192798A (en) |
| GB (1) | GB834161A (en) |
| IT (1) | IT588764A (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH363436A (en) * | 1954-06-08 | 1962-07-31 | Montedison Spa | Product formed as a film, fiber or thread and process for its manufacture |
| NL206073A (en) * | 1955-04-07 | 1900-01-01 | Hercules Powder Co Ltd |
-
0
- IT IT588764D patent/IT588764A/it unknown
-
1957
- 1957-03-14 DE DEB43889A patent/DE1060597B/en active Pending
-
1958
- 1958-03-10 FR FR1192798D patent/FR1192798A/en not_active Expired
- 1958-03-12 GB GB790858A patent/GB834161A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| IT588764A (en) | |
| FR1192798A (en) | 1959-10-28 |
| DE1060597B (en) | 1959-07-02 |
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