Patent US4762941A successfully refreshed from Google Patents.
US4762941A
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Polyurethane elastomers comprising a charge control agent and shaped elements therefrom
Assignee: Eastman Kodak Co
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Filing: 1987-10-16
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Granted: 1988-08-09
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Expires: 2007-10-16
Abstract
Abstract Herein are disclosed polyurethane elastomers comprising a charge-control agent of the formula: ##STR1## The elastomers are useful in making shaped articles.
Inventors
- 👤 Tsang J. Chen
- 👤 Donald A. Upson
- 👤 Paul D. Yacobucci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:28
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5021; C08G18/08; C08G18/0804; C08G18/0819; C08G18/42; C08G18/46; C08G18/4676; C08G18/70; C08G18/72; C08G18/80; C08G18/8003; C08G18/8006; C08G18/8041; G; G03; G03G; G03G15/00; G03G15/14; G03G15/16; G03G15/1665; G03G15/167; G03G15/1685
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
103 words
A compound of the formula: ##STR11## R 2 represents oxyphenylene sulfonate, oxycyclohexylene sulfonate, or p-toluenesulfonamidosulfonyl; R 3 represents a straight or branched chain alkylene group having 2 to 7 carbon atoms; R 4 is the same as R 3 or is --(--R 5 --O--) x --R 5 ; R 5 is the same as R 3 ; R 7 represents ##STR12## m and n are integers which together are of sufficient value to achieve an R 7 molecular weight of 300 to 30,000; and M represents hydrogen, an alkali metal, ammonium or P + (C 6 H 5 ) 3 CH 3 .
Claim 2
Dependent Claim
103 words
A compound of the formula: ##STR11## R 2 represents oxyphenylene sulfonate, oxycyclohexylene sulfonate, or p-toluenesulfonamidosulfonyl; R 3 represents a straight or branched chain alkylene group having 2 to 7 carbon atoms; R 4 is the same as R 3 or is --(--R 5 --O--) x --R 5 ; R 5 is the same as R 3 ; R 7 represents ##STR12## m and n are integers which together are of sufficient value to achieve an R 7 molecular weight of 300 to 30,000; and M represents hydrogen, an alkali metal, ammonium or P + (C 6 H 5 ) 3 CH 3 .
Claim 3
Dependent Claim
31 words
A compound according to claim 1 of the formula: ##STR13## wherein R 8 represents ##STR14## M represents Na + or P + (C 6 H 5 ) 3 CH 3 .
Claim 4
Dependent Claim
31 words
A compound according to claim 1 having the structure: ##STR15## wherein R 8 represents ##STR16## M represents P + (C 6 H 5 ) 3 CH 3 or Na + .
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) | 1991-08-09 | 1992-02-08 | 1992-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-09 | 1996-02-08 | 1996-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-09 | 2000-02-08 | 2000-08-09 | $7700.00 | Window Closed / Lapsed |