US3676411A
Expired / Lapsed
US
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Ternary catalyst systems for the polymerization of conjugated diolefins
Assignee: Goodyear Tire and Rubber Co
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Filing: 1970-12-17
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Granted: 1972-07-11
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Expires: 1990-12-17
Abstract
Abstract There is disclosed a process for the polymerization of conjugated diolefins and mixtures thereof which comprises contacting at least one conjugated diolefin with a catalyst system comprising (A) at least one compound selected from the group consisting of metal salts of carboxylic acids, metal salts of inorganic acids and organic complex compounds of metals wherein the metal is selected from a group consisting of uranium and thorium, (B) at least one trialkylaluminum or dialkylaluminum hydride, and (C) at least one halide ion containing compound selected from a group consisting of hydrogen halides, organometallic halides wherein the metal is selected from Groups II, III-A and IV-A of the Periodic Table and halides of metals of Groups III, IV, V, VI-B and VIII of the Periodic Table.
Inventors
- 👤 Morford C Throckmorton
- 👤 William M Saltman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:00
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
12 words
The process according to claim 1 wherein the conjugated diolefin is butadiene.
Claim 2
Dependent Claim
18 words
organometallic halides wherein the metal is selected from Groups II, III-A and IV-A of the Periodic Table, and
Claim 3
Dependent Claim
18 words
organometallic halides wherein the metal is selected from Groups II, IIIA and IVA of the Periodic Table, and
Claim 4
Dependent Claim
40 words
halides of metals of Groups III, IV, VIB and VIII of the Periodic Table and wherein the mole ratio (B)/(A) ranges from about 6/1 TO about 40/1 and the mole ratio of (C)/(A) ranges from about 0.7/1 to about 1.5/1.
Claim 5
Dependent Claim
56 words
halides of metals of Groups III, IV, V, VI-B and VIII of the periodic Table, and wherein the mole ratio of the catalyst component (B) to catalyst component (A) ranges from about 5:1 to about 60:1 and wherein the mole ratio of catalyst component (C) to catalyst component (A) ranges from about 0.5:1 to about 2.5:1.
Claim 6
Dependent Claim
19 words
The process according to claim 1 wherein a mixture of conjugated diolefins consisting of butadiene and isoprene is polymerized.
Claim 7
Dependent Claim
20 words
The process according to claim 1 wherein the trialkylaluminum compound is selected from a group consisting of triisobutylaluminum and triisohexylaluminum.
Claim 8
Dependent Claim
14 words
The process according to claim 1 in which the dialkylaluminum hydride is diisobutylaluminum hydride.
Claim 9
Dependent Claim
23 words
The process according to claim 1 in which the halide ion is selected from a group consisting of bromide, chloride and iodide ions.
Claim 10
Dependent Claim
32 words
The process according to claim 1 wherein the halide ion containing compound is selected from a group consisting of hydrogen bromide, hydrogen chloride, hydrogen iodide, diethylaluminum bromide, diethylaluminum iodide and ethylaluminum dichloride.
Claim 11
Dependent Claim
19 words
The process according to claim 1 wherein the mole ratio of (C)/(A) ranges from about 0.7/1 to about 1.5/1.
Claim 12
Dependent Claim
18 words
The process according to claim 1 wherein the mole ratio of (B)/(A) ranges from about 6/1 to 40/1.
Claim 13
Dependent Claim
73 words
A catalyst composition comprising A. at least one compound selected from a group consisting of metal salts of carboxylic acids, metal salts of inorganic acids and organic complex compounds of metals wherein the metal is selected from a group consisting of uranium and thorium, B. at least one compound selected from the group consisting of trialkylaluminum and dialkylaluminum hydrides and C. at least one halide ion-containing compound selected from the group consisting of
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) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |