US3755284A
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Process for polymerization of conjugated diene
Assignee: Mitsubishi Chemical Corp
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Filing: 1971-08-03
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Granted: 1973-08-28
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Expires: 1991-08-03
Abstract
Abstract A conjugated diene is polymerized in the presence of a twocomponent catalyst wherein the first component has the general formula:
Inventors
- 👤 T Yamawaki
- 👤 T Suzuki
- 👤 S Hino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:36
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C08F2410/00; C08F2410/03
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
28 words
The process for polymerization of a conjugated diene according to claim 1, wherein the polymerization reaction is conducted in the presence of an inert solvent at -20*C. -100*C.
Claim 2
Dependent Claim
38 words
The process for polymerization of a conjugated diene according to claim 1, wherein the polymerization reaction is conducted in the presence of a molecular weight regulator selected from the group consisting of water, vinylcycloolefin, and an organic-fluoro compound.
Claim 3
Dependent Claim
50 words
The process for polymerization of a conjugated diene according to claim 1, wherein the molar ratio of the first catalyst component to the conjugated diene is 10 6 - 1 : 1 and the molar ratio of the second catalyst component to the first catalyst component is 0.01 - 2000:1.
Claim 4
Dependent Claim
45 words
The process for polymerization of a conjugated diene according to claim 1, wherein the molar ratio of the first component to the conjugated diene is 10 5 - 10 1:1 and the molar ratio of the second component to the first component is 0.2 -1000:1.
Claim 5
Dependent Claim
22 words
The process for polymerization of a conjugated diene according to claim 1, wherein the first component is a complex of hydrogen oxide.
Claim 6
Dependent Claim
50 words
The process for polymerization of a conjugated diene according to claim 1, wherein the first catalyst component is selected from the group consisting of complexes of ligands of alcohols, phenols, carboxylic acids, amines, amides, and nitriles, carboxylic acid esters and ketones, having active hydrogen atom bonded to a carbon atom.
Claim 7
Dependent Claim
89 words
The process for polymerization of a conjugated diene, according to claim 1, wherein the first component is prepared by reacting a hydrogen oxide complex of the corresponding metal compound with an organic ligand selected from the group consisting of an alcohol, phenol, carboxylic acid, amine, amide, and nitrile, carboxylic acid ester and a ketone having an active hydrogen atom bonded to a carbon atom, and wherein the hydrogen oxide complex of the corresponding metal compound is prepared by reacting a fluorine-containing acid with a basic salt of Ni, Co.
Claim 8
Dependent Claim
42 words
The process for polymerization of a conjugated diene according to claim 1, wherein the second component is an organometallic compound of an alkyl radical of one-20 carbon atoms, a cycloalkyl radical of one-20 carbon atoms, an aryl radical or an aralkyl radical.
Claim 9
Dependent Claim
30 words
The process for polymerization of a cOnjugated diene according to claim 1, wherein first and second catalyst components are prepared by being mixed in the presence of a conjugated diene.
Claim 10
Dependent Claim
18 words
The process for polymerization of a conjugated diene according to claim 10, wherein said conjugated diene is 1,3-butadiene.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |