Patent EP0168966A2 successfully refreshed from Google Patents.
US3966697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of high-vinyl group, high-molecular weight unsaturated hydrocarbon polymers
Assignee: Huels AG
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Filing: 1974-12-09
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Granted: 1976-06-29
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Expires: 1994-12-09
Abstract
Abstract High molecular weight polybutadiene, polyisoprene and other hydrocarbon polymers having a high vinyl and a low 1,4-trans-double bond content, which are useful in the manufacture of tire treads and carcasses, are produced employing as catalyst system (a) a cobalt compound; (b) a halogen-containing organoaluminum compound; and (c) a tris-(aryl) phosphite of the formula P--(OR 1 ), (--OR 2 ),--OR 3 wherein R 1 , R 2 and R 3 are monocyclic halogenated aryl, or diaryl, naphthyl, anthracenyl or phenanthryl or the corresponding halogenated and/or alkylated polycyclic aryl; and optionally (d) an H-acidic compound, e.g., water.
Inventors
- 👤 Wolfgang Kampf
- 👤 Karl-Heinz Nordsiek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:52
CPC Classifications
C; C08; C08F; C08F136/00; C08F136/02; C08F136/04
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
164 words
In a process for the production of a vinyl-group containing unsaturated hydrocarbon polymer by the polymerization of a conjugated diene in the presence of a solvent, employing as catalyst system consisting essentially of (a) one or both of cobalt octoate and cobalt acetylacetonate, (b) a halogen-containing organoaluminum compound in an amount such that the molar ratio of the cobalt in (a) to the aluminum in (b) is 1:1 to 1:2,000, and (c) an organic phosphorus compound, alone or in combination with (d) an H-acidic compound in a molar ratio to the aluminum in (b) of up to 1.5 : 1, the improvement wherein component (c) is a tris(aryl)phosphite of the general formula ##EQU3## wherein R 1 , R 2 and R 3 are monocyclic halogenated aryl or diphenyl, naphthyl, anthracenyl or phenanthryl, or a corresponding diphenyl, naphthyl, anthracenyl or phenanthryl substituted by at least one of halo and alkyl, in a molar ratio of from 0.1 to 50 moles per mole of cobalt compound.
Claim 2
Dependent Claim
164 words
In a process for the production of a vinyl-group containing unsaturated hydrocarbon polymer by the polymerization of a conjugated diene in the presence of a solvent, employing as catalyst system consisting essentially of (a) one or both of cobalt octoate and cobalt acetylacetonate, (b) a halogen-containing organoaluminum compound in an amount such that the molar ratio of the cobalt in (a) to the aluminum in (b) is 1:1 to 1:2,000, and (c) an organic phosphorus compound, alone or in combination with (d) an H-acidic compound in a molar ratio to the aluminum in (b) of up to 1.5 : 1, the improvement wherein component (c) is a tris(aryl)phosphite of the general formula ##EQU3## wherein R 1 , R 2 and R 3 are monocyclic halogenated aryl or diphenyl, naphthyl, anthracenyl or phenanthryl, or a corresponding diphenyl, naphthyl, anthracenyl or phenanthryl substituted by at least one of halo and alkyl, in a molar ratio of from 0.1 to 50 moles per mole of cobalt compound.
Claim 3
Dependent Claim
14 words
A process according to claim 1 wherein the catalyst system contains an H-acidic compound.
Claim 4
Dependent Claim
17 words
A process according to claim 2 wherein the acidic compound is a bronsted acid or an alcohol.
Claim 5
Dependent Claim
12 words
A process according to claim 2 wherein the H-acidic compound is water.
Claim 6
Dependent Claim
11 words
A process according to claim 1 wherein the tris(aryl)phosphite is tris(o-phenylphenyl)phosphite.
Claim 7
Dependent Claim
13 words
A process according to claim 1 wherein the tris(aryl)phosphite is tris-1- or tris-2-naphthylphosphite.
Claim 8
Dependent Claim
11 words
A process according to claim 1 wherein the tris(aryl)phosphite is tris(o-chlorophenyl)phosphite.
Claim 9
Dependent Claim
11 words
A process according to claim 1 wherein (a) is cobalt octoate.
Claim 10
Dependent Claim
19 words
A process according to claim 1 wherein the halogen-containing organoaluminum compound is dimethylaluminum chloride, diethylaluminum chloride or diisobutylaluminum chloride.
Claim 11
Dependent Claim
14 words
A process according to claim 1 wherein the conjugated diene is butadiene or isoprene.
Claim 12
Dependent Claim
37 words
A process according to claim 1 wherein the catalyst system is a. one or both of cobalt octoate and cobalt acetylacetonate, b. diethylaluminum chloride, c. tris(o-phenylphenyl) phosphite, tris-1- or tris-2-naphthyl phosphite or tris(o-chlorophenyl) phosphite, and d. water.
Claim 13
Dependent Claim
14 words
A process according to claim 11 wherein the conjugated diene is butadiene or isoprene.
Claim 14
Dependent Claim
130 words
A catalyst system for polymerizing conjugated dienes consisting essentially of a. one or both of cobalt octoate and cobalt acetylacetonate; b. a halogen-containing organoaluminum compound in an amount such that the molar ratio of the cobalt in (a) to the aluminum in (b) is 1:1 to 1:2,000; c. a phosphite of the general formula ##EQU4## wherein R 1 , R 2 and R 3 are monocyclic halogenated aryl or diphenyl, naphthyl, anthracenyl or phenanthryl, or a corresponding diphenyl, naphthyl, anthracenyl or phenanthryl substituted by at least one of halo and alkyl, in a molar ratio of from 0.1 to 50 moles per mole of cobalt compound, alone or in combination with (d), an H-acidic compound in a molar ratio to the aluminum in (b) of up to 1.5 : 1.
Claim 15
Dependent Claim
130 words
A catalyst system for polymerizing conjugated dienes consisting essentially of a. one or both of cobalt octoate and cobalt acetylacetonate; b. a halogen-containing organoaluminum compound in an amount such that the molar ratio of the cobalt in (a) to the aluminum in (b) is 1:1 to 1:2,000; c. a phosphite of the general formula ##EQU4## wherein R 1 , R 2 and R 3 are monocyclic halogenated aryl or diphenyl, naphthyl, anthracenyl or phenanthryl, or a corresponding diphenyl, naphthyl, anthracenyl or phenanthryl substituted by at least one of halo and alkyl, in a molar ratio of from 0.1 to 50 moles per mole of cobalt compound, alone or in combination with (d), an H-acidic compound in a molar ratio to the aluminum in (b) of up to 1.5 : 1.
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) | 1979-06-29 | 1979-12-29 | 1980-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-29 | 1983-12-29 | 1984-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-29 | 1987-12-29 | 1988-06-29 | $7700.00 | Window Closed / Lapsed |