Patent US4096322A successfully refreshed from Google Patents.
US4096322A
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Polymerization of butadiene
Assignee: Goodyear Tire and Rubber Co
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Filing: 1974-12-23
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Granted: 1978-06-20
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Expires: 1994-12-23
Abstract
Abstract A process for producing cis-1,4-polybutadiene by contacting butadiene with a catalyst consisting of (1) at least one organoaluminum compound, (2) at least one organonickel compound selected from the class consisting of nickel salts of carboxylic acids, organic complex compounds of nickel and nickel tetracarbonyl, (3) boron trifluoride gas or a boron trifluoride etherate complex, and (4) at least one alkyl substituted hydroxy containing aromatic compound wherein the alkyl groups leave the hydroxy groups unhindered for chemical activity in that no alkyl groups are present simultaneously on both positions ortho to the hydroxy groups.
Inventors
- 👤 Morford C. Throckmorton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:58
CPC Classifications
C; C08; C08F; C08F136/00; C08F136/02; C08F136/04; C08F136/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
173 words
The process for the polymerization of butadiene to form polybutadiene containing a high proportion of butadiene units in the cis-1,4 configuration comprising contacting butadiene with a catalyst consisting essentially of (1) at least one organoaluminum compound, (2) at least one organonickel compound selected from the group consisting of nickel salts of carboxylic acids, organic complex compounds of nickel and nickel tetracarbonyl, (3) a boron trifluoride etherate, and (4) at least one alkyl substituted hydroxy containing aromatic compound wherein the alkyl groups leave the hydroxy groups unhindered for chemical activity in that no alkyl groups are present simultaneously on both positions ortho to the hydroxy groups and in which the mole ratio of component (1) to component (2) ranges from about 0.3/1 to about 300/1, the mole ratio of component (3) to component (2) ranges from about 0.5/1 to about 100/1, the mole ratio of component (3) to component (1) ranges from about 0.3/1 to about 10/1 and the mole ratio of component (4) to component (1) ranges from about 0.01/1 to about 2/1.
Claim 2
Dependent Claim
173 words
The process for the polymerization of butadiene to form polybutadiene containing a high proportion of butadiene units in the cis-1,4 configuration comprising contacting butadiene with a catalyst consisting essentially of (1) at least one organoaluminum compound, (2) at least one organonickel compound selected from the group consisting of nickel salts of carboxylic acids, organic complex compounds of nickel and nickel tetracarbonyl, (3) a boron trifluoride etherate, and (4) at least one alkyl substituted hydroxy containing aromatic compound wherein the alkyl groups leave the hydroxy groups unhindered for chemical activity in that no alkyl groups are present simultaneously on both positions ortho to the hydroxy groups and in which the mole ratio of component (1) to component (2) ranges from about 0.3/1 to about 300/1, the mole ratio of component (3) to component (2) ranges from about 0.5/1 to about 100/1, the mole ratio of component (3) to component (1) ranges from about 0.3/1 to about 10/1 and the mole ratio of component (4) to component (1) ranges from about 0.01/1 to about 2/1.
Claim 3
Dependent Claim
60 words
The process according to claim 1 in which the mole ratio of (Al/Ni) ranges from about 2/1 to about 80/1, the mole ratio of BF 3 /Ni ranges from about 1/1 to about 50/1, the mole ratio of BF 3 /Al ranges from about 0.2`to about 5/1 and the mole ratio of OH/Al ranges from about .03/1 to about 1/1.
Claim 4
Dependent Claim
35 words
The process according to claim 1 in which the hydroxy containing aromatic compound is selected from the group consisting of 4-tertiary butylcatechol, 3,5-ditertiary butylcatechol, 4-methylcatechol, 5-hexylcatechol, 3-ethylcatechol, tertiary, butylhydroquinone, ethylhydroquinone, para-tertiary-butylphenol, and meta tertiary butylphenol.
Claim 5
Dependent Claim
22 words
The process according to claim 1 in which the hydroxy containing compound is selected from the group consisting of 4-tertiary-butylcatechol, and para-t-butylphenol.
Claim 6
Dependent Claim
56 words
A process according to claim 1 in which (1) the organoaluminum compound is selected from the group consisting of a trialkylaluminum and a dialkylaluminum hydride, (2) the organonickel compound is a nickel salt of carboxylic acid, and (3) the alkyl substituted hydroxy containing compound is selected from the group consisting of 4-tertiary-butylcatechol, and para-tertiary butylphenol and
Claim 7
Dependent Claim
80 words
A catalytic composition consisting of (1) at least one organoaluminum compound, (2) at least one organonickel compound selected from the group consisting of nickel salts of carboxylic acids, organic complex compounds of nickel and nickel tetracarbonyl, (3) a boron trifluoride etherate, and (4) at least one alkyl substituted hydroxy containing aromatic compound wherein the alkyl groups leave the hydroxy groups unhindered for chemical activity in that no alkyl groups are present simultaneously on both positions ortho to the hydroxy groups.
Claim 8
Dependent Claim
80 words
A catalytic composition consisting of (1) at least one organoaluminum compound, (2) at least one organonickel compound selected from the group consisting of nickel salts of carboxylic acids, organic complex compounds of nickel and nickel tetracarbonyl, (3) a boron trifluoride etherate, and (4) at least one alkyl substituted hydroxy containing aromatic compound wherein the alkyl groups leave the hydroxy groups unhindered for chemical activity in that no alkyl groups are present simultaneously on both positions ortho to the hydroxy groups.
Claim 9
Dependent Claim
43 words
A catalytic composition according to claim 6 wherein (1) the organoaluminum compound is a trialkylaluminum, (2) the organonickel compound is a nickel salt of a carboxylic acid, and (3) the hydroxy containing compound is selected from the group consisting of 4-tertiary-butylcatechol, and para-tertiary-butylphenol.
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) | 1981-06-19 | 1981-12-19 | 1982-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-19 | 1985-12-19 | 1986-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-19 | 1989-12-19 | 1990-06-20 | $7700.00 | Window Closed / Lapsed |