GB943939A - Process for the polymerization of a conjugated diene - Google Patents
Process for the polymerization of a conjugated dieneInfo
- Publication number
- GB943939A GB943939A GB147062A GB147062A GB943939A GB 943939 A GB943939 A GB 943939A GB 147062 A GB147062 A GB 147062A GB 147062 A GB147062 A GB 147062A GB 943939 A GB943939 A GB 943939A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lithium
- catalyst
- diene
- mixture
- butyl
- 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
- C08F36/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
- C08F36/02—Homopolymers and copolymers 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
- C08F36/04—Homopolymers and copolymers 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
Polymers of conjugated dienes are made by polymerizing a diene in the presence of a catalyst that contains lithium and/or lithium compounds, at a temperature from 0 DEG C. to 100 DEG C. in an inert atmosphere, by adding the catalyst, "essentially continuously" to a mixture of the diene and solvent until the polymerization begins. By the expression "essentially continuously" means that the catalyst is fed into the reactor as a continuous stream without interruption, or incrementally at short time intervals. The catalyst is an alkyl lithium compound, admixed if desired with lithium metal, a lithium amide or a transition metal halide. Exemplified catalysts are n-butyl, and sec-butyl lithium, and an equimolar mixture of lithium isopropoxide and amyl lithium. The diene may be butadiene or isoprene. The solvent may be isopentane, or a mixture of amylenes.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US8273161A | 1961-01-16 | 1961-01-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB943939A true GB943939A (en) | 1963-12-11 |
Family
ID=22173072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB147062A Expired GB943939A (en) | 1961-01-16 | 1962-01-15 | Process for the polymerization of a conjugated diene |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE612647A (en) |
| ES (1) | ES273732A1 (en) |
| GB (1) | GB943939A (en) |
| NL (1) | NL273538A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3669943A (en) * | 1969-05-31 | 1972-06-13 | Japan Synthetic Rubber Co Ltd | Process for producing conjugated diolefin polymer with reduced cold flow |
-
0
- NL NL273538D patent/NL273538A/xx unknown
- BE BE612647D patent/BE612647A/xx unknown
-
1962
- 1962-01-15 GB GB147062A patent/GB943939A/en not_active Expired
- 1962-01-15 ES ES0273732A patent/ES273732A1/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3669943A (en) * | 1969-05-31 | 1972-06-13 | Japan Synthetic Rubber Co Ltd | Process for producing conjugated diolefin polymer with reduced cold flow |
Also Published As
| Publication number | Publication date |
|---|---|
| ES273732A1 (en) | 1962-03-16 |
| NL273538A (en) | |
| BE612647A (en) |
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