GB856317A - Process for polymerizing isoprene - Google Patents
Process for polymerizing isopreneInfo
- Publication number
- GB856317A GB856317A GB119159A GB119159A GB856317A GB 856317 A GB856317 A GB 856317A GB 119159 A GB119159 A GB 119159A GB 119159 A GB119159 A GB 119159A GB 856317 A GB856317 A GB 856317A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aluminium
- ether
- organo
- aralkyl
- isoprene
- 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
- C08F136/08—Isoprene
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
Isoprene is polymerized in the presence of titanium tetrachloride and an etherate of an organo-aluminium compound but in the absence of free ether; the products have an essentially cis:1, 4 configuration. The organo-aluminium compound may have the formula A1 R1R2R3 wherein R1 is alkyl, aryl or aralkyl and R2 and R3 are alkyl, aryl, aralkyl or hydrogen, a large number being specified; the used of aluminium triethyl and triisobutyl are exemplified. The ether used to form the etherate may be dimethyl, diethyl, di-n-propyl, di-isopropyl, di-n-butyl, di-isobutyl, or diamyl ether. The mol ratio of aluminium to titanium can be 0,5 to 2 and the total amount of catalyst 0,5-5 parts per 100 parts by weight of isoprene. Inert diluents may be present, e.g. cyclohexane, heptane, hexane, pentane or benzene, or mass polymerization may be used, or isoprene vapour can be contacted with the catalyst.ALSO:A catalyst for polymerizing isoprene comprises titanium tetrachloride and an etherate of an organo-aluminium compound, free ether being absent. The organo-aluminium may have the formula Al R1 R2 R3 where R1 is alkyl, aryl or aralkyl and R2 and R3 are hydrogen, alkyl, aryl or aralkyl. A large number are specified and the uses of the triethyl and triisobutyl are exemplified. The ether may be dimethyl, diethyl, di-n- or -iso-propyl, di-n- or -iso-butyl or diamyl ether. The mol ratio of aluminium to titanium can be from 0.5 to 2.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB119159A GB856317A (en) | 1959-01-13 | 1959-01-13 | Process for polymerizing isoprene |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB119159A GB856317A (en) | 1959-01-13 | 1959-01-13 | Process for polymerizing isoprene |
Publications (1)
Publication Number | Publication Date |
---|---|
GB856317A true GB856317A (en) | 1960-12-14 |
Family
ID=9717757
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB119159A Expired GB856317A (en) | 1959-01-13 | 1959-01-13 | Process for polymerizing isoprene |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB856317A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1228422B (en) * | 1961-02-04 | 1966-11-10 | Snam Spa | Process for the stereospecific polymerization of isoprene |
DE1258095B (en) * | 1964-06-12 | 1968-01-04 | Goodyear Tire & Rubber | Process for the polymerization of conjugated diolefins |
US3462405A (en) * | 1962-08-03 | 1969-08-19 | Goodyear Tire & Rubber | Preparation of polymerization catalyst |
-
1959
- 1959-01-13 GB GB119159A patent/GB856317A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1228422B (en) * | 1961-02-04 | 1966-11-10 | Snam Spa | Process for the stereospecific polymerization of isoprene |
US3462405A (en) * | 1962-08-03 | 1969-08-19 | Goodyear Tire & Rubber | Preparation of polymerization catalyst |
DE1258095B (en) * | 1964-06-12 | 1968-01-04 | Goodyear Tire & Rubber | Process for the polymerization of conjugated diolefins |
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