Patent US5278239A successfully refreshed from Google Patents.
US5278239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anionically polymerized polymers coupled with fullerenes
Assignee: Shell USA Inc
•
Filing: 1993-06-30
•
Granted: 1994-01-11
•
Expires: 2013-06-30
Abstract
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.
Inventors
- 👤 Ronald J. Hoxmeier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:45
CPC Classifications
C; C08; C08G; C08G81/00; C08G81/02; C08G81/021; C08G81/022; C08F; C08F297/00; C08F297/02; C08F297/04; C08F297/044; Y; Y10; Y10S; Y10S977/00; Y10S977/70; Y10S977/734; Y10S977/753; Y10S977/84; Y10S977/842
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
13 words
An anionically polymerized polymer comprised of conjugated diene arms coupled with a fullerene.
Claim 2
Dependent Claim
13 words
An anionically polymerized polymer comprised of conjugated diene arms coupled with a fullerene.
Claim 3
Dependent Claim
14 words
An anionically polymerized polymer comprised of vinyl aromatic hydrocarbon arms coupled with a fullerene.
Claim 4
Dependent Claim
14 words
An anionically polymerized polymer comprised of vinyl aromatic hydrocarbon arms coupled with a fullerene.
Claim 5
Dependent Claim
28 words
The polymer of claim 1 wherein the polymer also contains arms comprised of a conjugated diene and a vinyl aromatic hydrocarbon which are also coupled with the fullerene.
Claim 6
Dependent Claim
21 words
An anionically polymerized polymer comprised of arms comprised of a conjugated diene and a vinyl aromatic hydrocarbon coupled with a fullerene.
Claim 7
Dependent Claim
21 words
An anionically polymerized polymer comprised of arms comprised of a conjugated diene and a vinyl aromatic hydrocarbon coupled with a fullerene.
Claim 8
Dependent Claim
67 words
An anionically polymerized coupled polymer produced by the process which comprises: (a) 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, (b) contacting the living polymer arms with a fullerene which reacts with the living polymer arms, thereby forming a coupled polymer, and (c) terminating the polymerization.
Claim 9
Dependent Claim
67 words
An anionically polymerized coupled polymer produced by the process which comprises: (a) 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, (b) contacting the living polymer arms with a fullerene which reacts with the living polymer arms, thereby forming a coupled polymer, and (c) terminating the polymerization.
Claim 10
Dependent Claim
27 words
The product of claim 5 wherein the coupling reaction of step (b) is carried out at a temperature of from about 0° C. to about 150° C.
Claim 11
Dependent Claim
22 words
The product of claim 5 wherein the living polymer arms made in step (a) comprise blocks of at least two different monomers.
Claim 12
Dependent Claim
77 words
The product of claim 5 wherein after step (a) but before step (b), anionically polymerizing monomers different from those of step (a) and selected from the group consisting of a vinyl aromatic hydrocarbon, a conjugated diene or both with an organo alkali metal compound to produce a second set of living polymer arms, wherein the polymer arms from step (a) and the second set of polymer arms are coupled in step (b) to produce an asymmetric polymer.
Claim 13
Dependent Claim
93 words
The product of claim 5 wherein the following additional steps are added after step (c): (d) anionically polymerizing monomers different from those of step (a) and 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, (e) contacting the living polymer arms of step (d) with the coupled and terminated polymer of step (c) wherein the living polymer arms of step (d) react with the fullerene and form an asymmetric coupled polymer, and (f) terminating the polymerization.
Claim 14
Dependent Claim
16 words
The product of claim 5 wherein the organo alkali metal compound is a hydrocarbon lithium compound.
Claim 15
Dependent Claim
13 words
The product of claim 10 wherein the hydrocarbon lithium compound is sec-butyl lithium.
Claim 16
Dependent Claim
11 words
The product of claim 5 wherein the coupled polymer is hydrogenated.
Claim 17
Dependent Claim
11 words
The product of claim 8 wherein the coupled polymer is hydrogenated.
Claim 18
Dependent Claim
11 words
The product of claim 5 wherein the coupled polymer is hydrogenated.
References Cited (Backward Citations)
US5177248A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-01-10 | 1997-07-12 | 1998-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-01-10 | 2001-07-12 | 2002-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-01-10 | 2005-07-12 | 2006-01-11 | $7700.00 | Window Closed / Lapsed |