GB903588A - Method of polymerising conjugated diolefins - Google Patents
Method of polymerising conjugated diolefinsInfo
- Publication number
- GB903588A GB903588A GB189359A GB189359A GB903588A GB 903588 A GB903588 A GB 903588A GB 189359 A GB189359 A GB 189359A GB 189359 A GB189359 A GB 189359A GB 903588 A GB903588 A GB 903588A
- Authority
- GB
- United Kingdom
- Prior art keywords
- brown
- needle
- titanium trichloride
- aluminium
- polymerized
- 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
- C08F136/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
- C08F136/02—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
- C08F136/04—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
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)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The brown needle-shaped crystalline form of titanium trichloride is prepared by subjecting a gaseous mixture of the tetrachloride and hydrogen at room temperature to the action of a dark discharge. It is also formed by the decomposition of trichloromonoalkyl titanium compounds in solutions, e.g. in a hydrocarbon solvent, the decomposition occurring spontaneously. The two forms of titanium trichloride are readily distinguished by X-ray examination; the common violet form with the layer structure shows intense reflections due to planes with a rectilinear distance of 5,9 while the brown needle form shows reflections due to planes with a rectilinear distance of 5,4 . In heating to about 200 DEG C. the brown form is converted to the more stable violet form. Specification 834,554 is referred to.ALSO:Conjugated diolefines having at least one vinyl double bond are catalysed in the presence of the reaction product of aluminium alkyl and titanium trichloride in the brown, needle-shaped crystalline form; the products have a predominantly cis-1,4 configuration. Butadiene is polymerized using an aluminium dialkyl halide and an Al:Ti mole ratio of not more than 0,3; isoprene is polymerized with an aluminium trialkyl and an Al:Ti mole ratio of 0,3-1,5:1. Temperatures of -80 DEG to 150 DEG C. are used with a hydrocarbon solvent in processes as described in Specification 834,554.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT88158 | 1958-01-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB903588A true GB903588A (en) | 1962-08-15 |
Family
ID=11100223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB189359A Expired GB903588A (en) | 1958-01-22 | 1959-01-19 | Method of polymerising conjugated diolefins |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE574933A (en) |
| FR (1) | FR1221026A (en) |
| GB (1) | GB903588A (en) |
-
0
- BE BE574933D patent/BE574933A/xx unknown
-
1959
- 1959-01-19 GB GB189359A patent/GB903588A/en not_active Expired
- 1959-01-20 FR FR784497A patent/FR1221026A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1221026A (en) | 1960-05-30 |
| BE574933A (en) |
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