US3197440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1, 4-di(beta-hydroxyethylmercapto)-2, 3, 5, 6 tetrachlorobenzene containing polyether urethanes
Assignee: EIDP Inc
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Filing: 1961-03-23
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Granted: 1965-07-27
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Expires: 1981-03-23
Abstract
No abstract record available.
Inventors
- 👤 John J Verbanc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:02
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A CURED POLYURETHANE POLYMER OBTAINED BY REACTING AN ISOCYANATE-TERMINATED POLYURETHANE POLYMER WITH 1,4DI(B-HYDROXYETHYLMERCAPTO)-2,3,5.6-TETRACHLOROBENZENE SAID ISOCYANATE-TERMINATED POLYURETHANE POLYMER BEING PREPARED BY REACTING AN ORGANIC POLYISOCYANATE WITH A POLYETHER POLYOL HAVING A NUMBER AVERAGE MOLECULAR WEIGHT BETWEEN ABOUT 500 AND 10,000; THE VALUE OF THE MOLAR RATIO OF -NCO GROUPS TO -OH GROUPS RANGING BETWEEN ABOUT 0.95:1 AND 1:1:1 WITH ABOUT 30 TO 80 PERCENT BY WEIGHT OF SAID CURED POLYURETHANE POLYMER BEING DERIVED FROM SAID POLYETHER POLYOL AND ABOUT 5 TO 35 PERCENT BY WEIGHT OF SAID POLYURETHANE POLYMER BEING DERIVED FROM SAID 1,4-DI(B-HYDROXYETHYLMERCAPTO)-2,3,5,6TETRACHLOROBENZENE.
Claim 2
Dependent Claim
93 words
A CURED POLYURETHANE POLYMER OBTAINED BY REACTING AN ISOCYANATE-TERMINATED POLYURETHANE POLYMER WITH 1,4DI(B-HYDROXYETHYLMERCAPTO)-2,3,5.6-TETRACHLOROBENZENE SAID ISOCYANATE-TERMINATED POLYURETHANE POLYMER BEING PREPARED BY REACTING AN ORGANIC POLYISOCYANATE WITH A POLYETHER POLYOL HAVING A NUMBER AVERAGE MOLECULAR WEIGHT BETWEEN ABOUT 500 AND 10,000; THE VALUE OF THE MOLAR RATIO OF -NCO GROUPS TO -OH GROUPS RANGING BETWEEN ABOUT 0.95:1 AND 1:1:1 WITH ABOUT 30 TO 80 PERCENT BY WEIGHT OF SAID CURED POLYURETHANE POLYMER BEING DERIVED FROM SAID POLYETHER POLYOL AND ABOUT 5 TO 35 PERCENT BY WEIGHT OF SAID POLYURETHANE POLYMER BEING DERIVED FROM SAID 1,4-DI(B-HYDROXYETHYLMERCAPTO)-2,3,5,6TETRACHLOROBENZENE.
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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |