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| United States Patent | 5,278,239 |
| Hoxmeier | Jan. 11, 1994 |
Anionically polymerized polymers coupled with fullerenes
| Inventors: | Hoxmeier; Ronald J.
(Houston, TX).
|
| Assignee: | Shell Oil Company
(Houston, TX).
|
| Appl. No.: | 085,227 |
| Filed: | Jun. 30, 1993 |
| Intl. Cl.: | C08F 297/04; |
| U.S. Cl.: | 525/232.; 525/314.; |
| Field of Search: | 232;314;332.5;333.2;333.3
|
References Cited
U.S. Patent Documents
| 5,177,248 | Jan., 1993 | Chiang et al. | 560/ 86 |
Primary Examiner: Seidleck; James J.
Assistant Examiner: Delaney; Patrick R.
Abstract
A process is described for producing a coupled polymer by anionically
polymerizing monomers selected from the group consisting of a vinyl
aromatic hydrocarbon, a conjugated diene or both with an organo alkali
metal compound to produce living polymer arms which are then contacted
with a fullerene which reacts with the living polymer arms to form a
coupled polymer. The coupled polymer has a novel composition and novel
characteristics.
14 Claims,
No Drawings
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