US3828007A
Expired / Lapsed
US
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Process of reacting isocyanate or isothiocyanate and compositions therefor
Assignee: Ashland LLC
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Filing: 1972-02-18
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Granted: 1974-08-06
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Expires: 1992-02-18
Abstract
Abstract AN OGANIC COMPOUND CONTAINING ISOCYANATE AND/OR ISOTHIOCYANATE GROUP IS REACTED WITH SUBSTANCE HAVING REACTIVE HYDROGEN AS DETERMINED BY THE ZEREWITIONOFF METHOD IN CONTACT WITH A CATALYTIC AMOUNT OF ORGANOMETALLIC COMPOUND HAVING ONE OF THE FOLLOWING STRUCTURAL FORMULAS: R1-ME(-R2)<(-O-CH2-C(<(-CH2-X-CH2-))-CH2-O-) I R1-ME(-R2)<(-O-CH2-C(-R)(-Y)-Z-) WHEREIN ME IS A GROUP IV-A METAL; X IS O, S, OR CH2; Y IS EITHER NO2, NH2, OH, CF3 OR CH2OH; Z IS OCH2, OR IS NH, OR OCH2 WHEN Y IS CH2OH; R IS AN ALKYL GROUP; AND EACH R1 AND R2 INDIVIDUALLY IS ALKYL, ARYL, CYCLOALKYL, ARALKYL, AND ALKARYL.
Inventors
- 👤 R Slagel
- 👤 P Throckmorton
- 👤 Killip W Mc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:19
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/22; C08G18/24; C08G18/242; C07; C07F; C07F7/00; C07F7/22; C07F7/2224; C07F7/2284; Y; Y10; Y10S; Y10S528/00; Y10S528/903; Y10S528/905; Y10S528/906
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |