IE38237L - Diene copolymers-organolithium catalysis - Google Patents
Diene copolymers-organolithium catalysisInfo
- Publication number
- IE38237L IE38237L IE731614A IE161473A IE38237L IE 38237 L IE38237 L IE 38237L IE 731614 A IE731614 A IE 731614A IE 161473 A IE161473 A IE 161473A IE 38237 L IE38237 L IE 38237L
- Authority
- IE
- Ireland
- Prior art keywords
- aromatic hydrocarbon
- copolymer
- vinyl aromatic
- pseudorandom
- vinyl
- Prior art date
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
- C08F236/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
- C08F236/02—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
- C08F236/04—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
- C08F236/10—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 with vinyl-aromatic monomers
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Polymerization Catalysts (AREA)
Abstract
1446183 Anionic copolymerization; pseudorandom copolymers UNIROYAL Inc 4 Sept 1973 [14 Sept 1972] 41433/73 Heading C3P [Also in Division C2] A monomer mixture comprising a conjugated diene and a vinyl aromatic hydrocarbon is copolymerized by contact with a catalyst comprising (a) an organomonolithium compound and (b) a potassium phenolate complex of the formula where each R<SP>1</SP> is an alkyl group at least one of which has 8 to 26 carbon atoms, y is 1 to 3, Ar is an arylene radical containing one aromatic ring, and R<SP>11</SP> is hydrogen or hydrocarbyl, in a solvent which is a saturated aliphatic hydrocarbon or aromatic hydrocarbon which does not contain benzylic hydrogen atoms (compounds such as toluene acting as molecular weight regulators in this system). The complex (b) is obtainable by reaction of a phenol with potassium hydroxide or hydrocarbyloxide. The copolymer products may be random or "pseudorandom". In particular a pseudorandom copolymer is characterized by (i) containing 23 to 50% by weight of the vinyl aromatic hydrocarbon, (ii) having blocks of 3 or 4 units of the vinyl aromatic hydrocarbon interspersed throughout the copolymer chain, (iii) a vinyl (1,2-) content of 7 to 15%, and (iv) a Tg which is at least 10 C. lower than the Tg of a random copolymer having the same vinyl aromatic hydrocarbon content. In the examples, butadiene and styrene are copolymerized in heptane or benzene in the presence of (a) C 4 H 9 Li and (b) C 9 H 19 -C 6 H 4 -OK.HOC 4 H 9 or a polyisobutylene phenol-KOH reaction product.
[GB1446183A]
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US28904272A | 1972-09-14 | 1972-09-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE38237L true IE38237L (en) | 1974-03-14 |
| IE38237B1 IE38237B1 (en) | 1978-02-01 |
Family
ID=23109780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE1614/73A IE38237B1 (en) | 1972-09-14 | 1973-09-11 | Soluttion diene elastomers by organolithium catalysis |
Country Status (17)
| Country | Link |
|---|---|
| JP (1) | JPS4948344B2 (en) |
| AR (1) | AR197159A1 (en) |
| AU (1) | AU476689B2 (en) |
| BE (1) | BE804716A (en) |
| BR (1) | BR7307036D0 (en) |
| CS (1) | CS171291B2 (en) |
| DE (1) | DE2345755A1 (en) |
| FR (1) | FR2200284B1 (en) |
| GB (1) | GB1446183A (en) |
| IE (1) | IE38237B1 (en) |
| IT (1) | IT999542B (en) |
| LU (1) | LU68409A1 (en) |
| NL (1) | NL173853C (en) |
| PL (1) | PL89413B1 (en) |
| RO (1) | RO63547A (en) |
| SU (1) | SU624577A3 (en) |
| ZA (1) | ZA735903B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6055527B2 (en) * | 1976-12-03 | 1985-12-05 | ジェイエスアール株式会社 | Method for producing conjugated diene copolymer |
| JPS5515587U (en) * | 1978-07-17 | 1980-01-31 | ||
| US4277591A (en) * | 1979-11-20 | 1981-07-07 | Phillips Petroleum Company | Process for producing random copolymers of conjugated dienes and alpha-methylstyrene type monomers |
| JPS57100112A (en) * | 1980-12-16 | 1982-06-22 | Asahi Chem Ind Co Ltd | Perfectly random styrene-butadiene copolymer rubber |
| JPS5836705A (en) * | 1981-08-27 | 1983-03-03 | Bridgestone Corp | Pneumatic tire with improved tread |
| JP6907599B2 (en) * | 2017-03-02 | 2021-07-21 | 横浜ゴム株式会社 | Rubber composition for tires and pneumatic tires |
| JP6907597B2 (en) * | 2017-03-02 | 2021-07-21 | 横浜ゴム株式会社 | Rubber composition for studless tires and studless tires |
| JP6919233B2 (en) * | 2017-03-02 | 2021-08-18 | 横浜ゴム株式会社 | Rubber composition for tires and pneumatic tires |
| JP6911385B2 (en) * | 2017-03-02 | 2021-07-28 | 横浜ゴム株式会社 | Rubber composition for tires and pneumatic tires |
| JP6907598B2 (en) * | 2017-03-02 | 2021-07-21 | 横浜ゴム株式会社 | Rubber composition for tires and pneumatic tires |
| CN109485791B (en) * | 2017-09-13 | 2021-10-19 | 中国石油化工股份有限公司 | Linear styrene-butadiene copolymer, process for producing the same, composition thereof, aromatic vinyl resin and process for producing the same |
| EP4428160A1 (en) * | 2023-03-07 | 2024-09-11 | Evonik Operations GmbH | Process for preparing 1,3-butadiene copolymers |
-
1973
- 1973-08-28 ZA ZA735903A patent/ZA735903B/en unknown
- 1973-08-30 AU AU59829/73A patent/AU476689B2/en not_active Expired
- 1973-09-04 IT IT69640/73A patent/IT999542B/en active
- 1973-09-04 GB GB4143373A patent/GB1446183A/en not_active Expired
- 1973-09-05 AR AR249943A patent/AR197159A1/en active
- 1973-09-10 FR FR7332486A patent/FR2200284B1/fr not_active Expired
- 1973-09-11 IE IE1614/73A patent/IE38237B1/en unknown
- 1973-09-11 DE DE19732345755 patent/DE2345755A1/en active Pending
- 1973-09-11 BR BR7036/73A patent/BR7307036D0/en unknown
- 1973-09-11 BE BE135539A patent/BE804716A/en unknown
- 1973-09-12 LU LU68409A patent/LU68409A1/xx unknown
- 1973-09-13 JP JP48103727A patent/JPS4948344B2/ja not_active Expired
- 1973-09-13 PL PL1973165190A patent/PL89413B1/pl unknown
- 1973-09-13 SU SU731961038A patent/SU624577A3/en active
- 1973-09-13 NL NLAANVRAGE7312657,A patent/NL173853C/en not_active IP Right Cessation
- 1973-09-14 CS CS6375A patent/CS171291B2/cs unknown
- 1973-09-14 RO RO7300076074A patent/RO63547A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| PL89413B1 (en) | 1976-11-30 |
| BE804716A (en) | 1974-03-11 |
| IT999542B (en) | 1976-03-10 |
| NL173853B (en) | 1983-10-17 |
| AU476689B2 (en) | 1976-09-30 |
| FR2200284B1 (en) | 1976-04-30 |
| CS171291B2 (en) | 1976-10-29 |
| LU68409A1 (en) | 1975-05-21 |
| JPS4948344B2 (en) | 1974-12-20 |
| BR7307036D0 (en) | 1974-07-18 |
| DE2345755A1 (en) | 1974-04-04 |
| ZA735903B (en) | 1974-07-31 |
| GB1446183A (en) | 1976-08-18 |
| FR2200284A1 (en) | 1974-04-19 |
| IE38237B1 (en) | 1978-02-01 |
| NL7312657A (en) | 1974-03-18 |
| AR197159A1 (en) | 1974-03-15 |
| JPS4967986A (en) | 1974-07-02 |
| AU5982973A (en) | 1975-03-06 |
| SU624577A3 (en) | 1978-09-15 |
| RO63547A (en) | 1978-08-15 |
| NL173853C (en) | 1984-03-16 |
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