US3574755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High purity olefin oxide adducts of alkyl and alkenyl amines
Assignee: NORTHERN PETRO CHEM CO
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Filing: 1968-10-14
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Granted: 1971-04-13
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Expires: 1988-10-14
Abstract
Abstract DISCLOSED ARE OLEFIN OXIDE ADDUCTS OF ALKYL AND ALKENYL PRIMARY AMINES AND OLEFIN OXIDE ADDUCTS OF ALKYL AND ALKENYL TRIMETHYLENE DIAMINES. THE AMINE IS FIRST REACTED WITH ABOUT ONE TO THREE MOLES OF AN OLEFIN OXIDE CONTAINING AT LEAST THREE CARBONS TO FORM AN INTERMEDIATE WHICH IS THEN REACTED WITH ETHYLENE OXIDE TO FORM THE DESIRED PRODUCTS. THE PRODUCTS ARE SURFACE ACTIVE AGENTS CHARACTERIZED BY LIGHT COLOR AND LOW AMOUNTS OF NONAMINE IMPURITIES.
Inventors
- 👤 Robert B Mcconnell
- 👤 Robert A Swenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:23
CPC Classifications
C; C09; C09K; C09K23/00; C09K23/16
Claims Analysis
Total Claims: 0
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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) | 1974-04-12 | 1974-10-12 | 1975-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-12 | 1978-10-12 | 1979-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-12 | 1982-10-12 | 1983-04-13 | $7700.00 | Window Closed / Lapsed |