GB810576A - Improvements in the production of polyolefines prepared by the low-pressure process - Google Patents
Improvements in the production of polyolefines prepared by the low-pressure processInfo
- Publication number
- GB810576A GB810576A GB555257A GB555257A GB810576A GB 810576 A GB810576 A GB 810576A GB 555257 A GB555257 A GB 555257A GB 555257 A GB555257 A GB 555257A GB 810576 A GB810576 A GB 810576A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aluminium
- specified
- phenyl
- tri
- oxide
- 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
Abstract
Polyolefins are produced by polymerizing an olefin at low pressure in the presence of a soluble catalyst system of an ester of an acid of a metal of the 4th to 8th sub-groups of the Periodic System including thorium and uranium on the one hand and an aluminium compound of formula Al(R)3 (in which R is hydrogen or an alkyl or aralkyl radical) on the other hand, in the presence of a finely-divided solid inert substance having an active surface in amounts of from 1 to 5 grams per kilogram of diluent. Specified olefins are ethylene and propylene; specified esters are tetramethyl, tetrapropyl and tetrabutyl titanates, dimethyldiethyl or dimethyldipropyl titanate, alkyl orthozirconates, triethyl vanadate, chromic ethylate and ferric ethylate; and specified aluminium compounds are aluminium-hydride, -triethyl, -tripropyl, -tributyl, -tripentyl, -diethylpropyl and -diethylbutyl, aluminium diethyl or dipropyl or dibutyl hydrides and the corresponding mono derivatives, aluminium tri-(2-phenyl-ethyl), aluminium tri-(2-phenyl-propyl), aluminium tri-(2-phenyl-butyl), and aluminium tri-(2,2-diphenylethyl). Specified inert substances are magnesium oxide, aluminium oxide, titanium oxide, silicates, active carbon, carbon black, iron oxide red, iron oxide brown, chrome yellow, chrome orange, cadmium sulphide and finely-divided polymers, e.g. low-pressure polyethylene. Specified diluents are isopropylcyclohexane, cyclohexane and hexane.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEC0012825 | 1956-04-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB810576A true GB810576A (en) | 1959-03-18 |
Family
ID=7015293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB555257A Expired GB810576A (en) | 1956-04-04 | 1957-02-19 | Improvements in the production of polyolefines prepared by the low-pressure process |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1420252A1 (en) |
| GB (1) | GB810576A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4473672A (en) * | 1981-04-09 | 1984-09-25 | Imperial Chemical Industries Plc | Polymer composition, production and use |
| WO2020114967A1 (en) * | 2018-12-04 | 2020-06-11 | Basell Poliolefine Italia S.R.L. | Zn catalyst components and process for their preparation |
| WO2020114837A1 (en) * | 2018-12-04 | 2020-06-11 | Basell Poliolefine Italia S.R.L. | Process for the preparation of a colored polypropylene |
| WO2020207880A1 (en) * | 2019-04-11 | 2020-10-15 | Basell Poliolefine Italia S.R.L. | Process for the preparation of polypropylene |
-
1956
- 1956-04-04 DE DE19561420252 patent/DE1420252A1/en active Pending
-
1957
- 1957-02-19 GB GB555257A patent/GB810576A/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4473672A (en) * | 1981-04-09 | 1984-09-25 | Imperial Chemical Industries Plc | Polymer composition, production and use |
| WO2020114967A1 (en) * | 2018-12-04 | 2020-06-11 | Basell Poliolefine Italia S.R.L. | Zn catalyst components and process for their preparation |
| WO2020114837A1 (en) * | 2018-12-04 | 2020-06-11 | Basell Poliolefine Italia S.R.L. | Process for the preparation of a colored polypropylene |
| CN113166317A (en) * | 2018-12-04 | 2021-07-23 | 巴塞尔聚烯烃意大利有限公司 | ZN catalyst component and process for its preparation |
| US11673981B2 (en) | 2018-12-04 | 2023-06-13 | Basell Poliolefine Italia S.R.L. | Zn catalyst components and process for their preparation |
| WO2020207880A1 (en) * | 2019-04-11 | 2020-10-15 | Basell Poliolefine Italia S.R.L. | Process for the preparation of polypropylene |
| CN113557247A (en) * | 2019-04-11 | 2021-10-26 | 巴塞尔聚烯烃意大利有限公司 | Preparation process of polypropylene |
| CN113557247B (en) * | 2019-04-11 | 2022-05-03 | 巴塞尔聚烯烃意大利有限公司 | Preparation process of polypropylene |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1420252A1 (en) | 1968-10-10 |
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