GB861444A - Process for polymerizing olefins - Google Patents
Process for polymerizing olefinsInfo
- Publication number
- GB861444A GB861444A GB781957A GB781957A GB861444A GB 861444 A GB861444 A GB 861444A GB 781957 A GB781957 A GB 781957A GB 781957 A GB781957 A GB 781957A GB 861444 A GB861444 A GB 861444A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pressure
- mixtures
- polymerization
- olefins
- effecting
- 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)
- Polymerisation Methods In General (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Olefins are polymerized in the presence of a Zeigler-type catalyst in the presence of an aliphatic hydrocarbon containing 2 to 4 carbon atoms and which is gaseous at room temperature and normal pressure by effecting the polymerization at a pressure above atmospheric pressure whilst maintaining the partial pressure of the dispersing media in the gaseous phase at between 20 and 40% of the total pressure. The polymerization heat is preferably eliminated by cooling the gaseous phase, which is mechanically moved, e.g. in a circuit by a ventilator blower or compressor means and effecting the cooling at the pressure side of such a means. The olefin may be continuously or intermittently introduced into the polymerization vessel. The dispersing medium may be ethane, propane, butane, or isobutane, or mixtures thereof. There may also be used mixtures of one or more of these hydrocarbons with benzene, toluene, xylene, decahydronaphthalene or a saturated hydrocarbon boiling between 80 DEG and 230 DEG C. The olefins polymerized may be ethylene, propylene, butylene, isobutylene, 1-hexene, 1-octylene, or mixtures thereof, in particular ethylene and propylene. Exemplified catalysts are aluminium triethyl and titanium tetrachloride or trichloride. Specifications 799,392, 799,832 and 801,031 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF19762A DE1102403B (en) | 1956-03-10 | 1956-03-10 | Process for the polymerisation and interpolymerisation of olefins according to the low pressure process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB861444A true GB861444A (en) | 1961-02-22 |
Family
ID=7089437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB781957A Expired GB861444A (en) | 1956-03-10 | 1957-03-08 | Process for polymerizing olefins |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1102403B (en) |
| GB (1) | GB861444A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2117364C3 (en) * | 1971-04-08 | 1983-12-01 | Basf Ag, 6700 Ludwigshafen | Process for removing the heat of reaction in the discontinuous homo- or copolymerization of vinyl chloride |
| DE2300111C3 (en) * | 1973-01-03 | 1984-10-25 | Basf Ag, 6700 Ludwigshafen | Process for removing the heat of reaction in the copolymerization of ethylene in an aqueous dispersion |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE540317A (en) * | ||||
| US2414311A (en) * | 1943-07-30 | 1947-01-14 | Du Pont | Preparation of polymers of ethylene |
| NL82046C (en) * | 1950-12-22 | |||
| DE973626C (en) * | 1953-11-17 | 1960-04-14 | Karl Dr Dr E H Ziegler | Process for the production of high molecular weight polyethylenes |
-
1956
- 1956-03-10 DE DEF19762A patent/DE1102403B/en active Pending
-
1957
- 1957-03-08 GB GB781957A patent/GB861444A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1102403B (en) | 1961-03-16 |
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