US3203955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface active mixtures of polyoxyalkylene compounds having a single heteric polyoxypropylene-polyoxyethylene chain
Assignee: Wyandotte Chemicals Corp
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Filing: 1962-10-09
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Granted: 1965-08-31
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Expires: 1982-10-09
Abstract
No abstract record available.
Inventors
- 👤 Donald R Jackson
- 👤 Lester G Lundsted
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:01
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/38; C11D1/42; C11D1/44; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A SURFACE ACTIVE MIXTURE OF CONJUGATED POLYOXYALKYLENE COMPOUNDS CONSISTING OF OXYPROPYLENE GROUPS, OXYETHYLENE GROUPS AND THE NUCLEUS OF MORPHOLINE AS A REACTIVE HYDROGEN COMPOUND HAVING ONLY A SINGLE REACTIVE HYDROGEN ATOM, SAID COMPOUNDS BEING CHARACTERIZED BY HAVING A HETERIC POLYMERIC CHAIN OF OXYPROPYLENE AND OXYETHYLENE GROUPS ATTACHED AT ONE END THEREOF TO SAID NUCLEUS OF MORPHOLINE AT THE SITE OF ITS REACTIVE HYDROGEN ATOM AND BY HAVING A CHAIN OF OXYETHYLENE GROUPS ATTACHED TO THE OTHER END OF SAID HETERIC CHAIN, SAID HETERIC POLYOXPROPYLENE-POLYOXYETHYLENE CHAIN HAVING FROM FIVE TO 40 WEIGHT PERCENT OF OXYETHYLENE GROUPS, BASED ON THE WEIGHT OF SAID HETERIC CHAIN, AND HAVING AN AVERAGE MOLECULAR WEIGHT OF AT LEAST ABOUT 400 AND UP TO ABOUT 25,000 AND THE OXYETHYLENE GROUPS IN SAID OXYETHYLENE CHAIN BEING SUFFICIENT IN WEIGHT SO AS TO CONSTITUTE FROM ABOUT 20 TO 80 WEIGHT PERCENT OF THE MIXTURE OF SURFACE ACTIVE COMPOUNDS.
Claim 2
Dependent Claim
149 words
A SURFACE ACTIVE MIXTURE OF CONJUGATED POLYOXYALKYLENE COMPOUNDS CONSISTING OF OXYPROPYLENE GROUPS, OXYETHYLENE GROUPS AND THE NUCLEUS OF MORPHOLINE AS A REACTIVE HYDROGEN COMPOUND HAVING ONLY A SINGLE REACTIVE HYDROGEN ATOM, SAID COMPOUNDS BEING CHARACTERIZED BY HAVING A HETERIC POLYMERIC CHAIN OF OXYPROPYLENE AND OXYETHYLENE GROUPS ATTACHED AT ONE END THEREOF TO SAID NUCLEUS OF MORPHOLINE AT THE SITE OF ITS REACTIVE HYDROGEN ATOM AND BY HAVING A CHAIN OF OXYETHYLENE GROUPS ATTACHED TO THE OTHER END OF SAID HETERIC CHAIN, SAID HETERIC POLYOXPROPYLENE-POLYOXYETHYLENE CHAIN HAVING FROM FIVE TO 40 WEIGHT PERCENT OF OXYETHYLENE GROUPS, BASED ON THE WEIGHT OF SAID HETERIC CHAIN, AND HAVING AN AVERAGE MOLECULAR WEIGHT OF AT LEAST ABOUT 400 AND UP TO ABOUT 25,000 AND THE OXYETHYLENE GROUPS IN SAID OXYETHYLENE CHAIN BEING SUFFICIENT IN WEIGHT SO AS TO CONSTITUTE FROM ABOUT 20 TO 80 WEIGHT PERCENT OF THE MIXTURE OF SURFACE ACTIVE COMPOUNDS.
References Cited (Backward Citations)
US2677700A
Cited
US3078315A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |