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US4340705A
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Preparation of interpolymers of alpha-olefins and nonconjugated alpha, omega-polyenes
Assignee: Goodyear Tire and Rubber Co
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Filing: 1977-12-19
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Granted: 1982-07-20
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Expires: 1997-12-19
Abstract
Abstract Interpolymers of alpha-olefins and nonconjugated alpha, omega-polyenes are prepared by organoaluminum compound-transition metal compound catalysts modified with hexaalkylphosphoric triamides or at least one compound of the formula Q=P(X Y) 3 , wherein P is phosphorous, Q is oxygen or sulfur, X is oxygen or sulfur and Y is a hydrocarbon radical containing 1 to 20 carbon atoms.
Inventors
- 👤 Joginder Lal
- 👤 Michael L. Senyek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:26
CPC Classifications
C; C08; C08F; C08F210/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
146 words
A process of making low-gel, improved unsaturation interpolymers from about 95 to about 5 mole percent of at least one alpha-olefin containing from 4 to 12 carbon atoms and about 5 to about 50 mole percent of at least one second monomer selected from the class of alpha, omega-polyenes containing at least two ethylenic double bonds and having at least 8 carbon atoms in the presence of coordination catalysts prepared from components (A) an organoaluminum compound, (B) a transition metal compound selected from Groups IVB, VB, and VIB of the Periodic Table, and (C) at least one compound of the general formula Q═P(XY) 3 where P is phosphorous, Q is oxygen or sulfur, X is oxygen or sulfur and Y is a hydrocarbon radical containing from 1 to 20 carbon atoms or a hexahydrocarbon phosphoric triamide having 1 to 20 carbon atoms in the hydrocarbon radical.
Claim 2
Dependent Claim
146 words
A process of making low-gel, improved unsaturation interpolymers from about 95 to about 5 mole percent of at least one alpha-olefin containing from 4 to 12 carbon atoms and about 5 to about 50 mole percent of at least one second monomer selected from the class of alpha, omega-polyenes containing at least two ethylenic double bonds and having at least 8 carbon atoms in the presence of coordination catalysts prepared from components (A) an organoaluminum compound, (B) a transition metal compound selected from Groups IVB, VB, and VIB of the Periodic Table, and (C) at least one compound of the general formula Q═P(XY) 3 where P is phosphorous, Q is oxygen or sulfur, X is oxygen or sulfur and Y is a hydrocarbon radical containing from 1 to 20 carbon atoms or a hexahydrocarbon phosphoric triamide having 1 to 20 carbon atoms in the hydrocarbon radical.
Claim 3
Dependent Claim
20 words
The process of claim 1 wherein the second monomer is selected from the class consisting of 1,7-octadiene, 1,9-decadiene and 1,13-tetradecadiene.
Claim 4
Dependent Claim
31 words
The process of claim 1 wherein the component (C) is selected from the class consisting of hexamethylphosphoric triamide, hexaethylphosphoric triamide, hexamethylthiophosphoric triamide, triethyl phosphate, tri-n-butyl phosphate, triphenyl phosphate, and S,S,S-trimethyl phosphorotrithioate.
Claim 5
Dependent Claim
33 words
The process of claim 1 wherein the molar ratio of component (A) to component (B) is 0.5 to 15 and the molar ratio of component (C) to component (A) is 0.1 to 2.
Claim 6
Dependent Claim
12 words
The process of claim 1 wherein component (B) is a titanium compound.
Claim 7
Dependent Claim
17 words
The process of claim 1 wherein the alpha, omega-polyene is 1,7-octadiene and component (C) is hexamethylphosphoric triamide.
Claim 8
Dependent Claim
28 words
The process of claim 1 wherein the alpha, omega-polyene is 1,7-octadiene and component (C) is selected from the class consisting of triethyl phosphate, tri-n-butyl phosphate, and S,S,S-trimethyl phosphorotrithioate.
References Cited (Backward Citations)
GB836790A
Cited
US2933480A
Cited
GB1089333A
Cited
US3900452A
Cited
US3574176A
Cited
US3595842A
Cited
US3746694A
Cited
US3975336A
Cited
US3933769A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-07-19 | 1986-01-18 | 1986-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-19 | 1990-01-18 | 1990-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-19 | 1994-01-18 | 1994-07-20 | $7700.00 | Window Closed / Lapsed |