US3036996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cured polyetherurethanes
Assignee: EIDP Inc
•
Filing: 1961-02-01
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Granted: 1962-05-29
•
Expires: 1981-02-01
Abstract
No abstract record available.
Inventors
- 👤 Irving C Kogon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:10
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/675; C08G18/08; C08G18/10; C08G18/30; C08G18/38; C08G18/3855; C08G18/3863; C08G18/3865; C08G18/3868; Y; Y10; Y10S; Y10S273/00; Y10S273/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A POLYURETHANE POLYMER PREPARED FROM (1) ORGANIC POLYISOCYANATE, (2) A POLYETHER POLYOL HAVING A NUMBER AVERAGE MOLECULAR WEIGHT BETWEEN ABOUT 500 AND 10,000 (3) 1,4-DI(B-HYDROXYETHYLMERCAPTO) 2,3,5,6-TETRACHLOROBENZENE, AND (J) AN ARYLENE DIAMINE; THERE BEING ABOUT 0.95 TO 1.1-NCO GROUPS FOR EACH -OH GROUP AND ABOUT 0.5 TO 1.0-NCO GROUP FOR EACH -NH2 GROUP; THE VALUE OF THE MOLAR RATIO OF TERACHLOROBENZENE TO ARYLENE DIAMINNE RANGING BETWEEN ABOUT 0.3:1 AND 5:1 WITH ABOUT 30 TO 80 PERCENT BY WEIGHT OF SAID POLYURETHANE POLYMER BEING DERIVED FROM SAID POLYETHER POLYOL AND ABOUT 2 TO 20 PERCENT BY WEIGHT OF SAID POLYURETHANE POLYMER BEING DERIVED FROM SAID TETRACHLOROBENZENE.
Claim 2
Dependent Claim
104 words
A POLYURETHANE POLYMER PREPARED FROM (1) ORGANIC POLYISOCYANATE, (2) A POLYETHER POLYOL HAVING A NUMBER AVERAGE MOLECULAR WEIGHT BETWEEN ABOUT 500 AND 10,000 (3) 1,4-DI(B-HYDROXYETHYLMERCAPTO) 2,3,5,6-TETRACHLOROBENZENE, AND (J) AN ARYLENE DIAMINE; THERE BEING ABOUT 0.95 TO 1.1-NCO GROUPS FOR EACH -OH GROUP AND ABOUT 0.5 TO 1.0-NCO GROUP FOR EACH -NH2 GROUP; THE VALUE OF THE MOLAR RATIO OF TERACHLOROBENZENE TO ARYLENE DIAMINNE RANGING BETWEEN ABOUT 0.3:1 AND 5:1 WITH ABOUT 30 TO 80 PERCENT BY WEIGHT OF SAID POLYURETHANE POLYMER BEING DERIVED FROM SAID POLYETHER POLYOL AND ABOUT 2 TO 20 PERCENT BY WEIGHT OF SAID POLYURETHANE POLYMER BEING DERIVED FROM SAID TETRACHLOROBENZENE.
References Cited (Backward Citations)
US2843568A
Cited
US2961428A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-28 | 1965-11-27 | 1966-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-28 | 1969-11-27 | 1970-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-28 | 1973-11-27 | 1974-05-29 | $7700.00 | Window Closed / Lapsed |