US3121749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxyalkylated tris(hydroxymethyl)-aminomethanes
Assignee: Baker Petrolite LLC
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Filing: 1959-11-13
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Granted: 1964-02-18
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Expires: 1979-11-13
Abstract
No abstract record available.
Inventors
- 👤 Groote Melvin De
- 👤 Owen H Pettingill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:47
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/62; C08G59/64; C10; C10G; C10G33/00; C10G33/04; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A COGNERIC MIXTURE OF A HOMOLOGOUS SERIES OF GLYCOL ETHERS OF TRIS(HYDROXYMETHYL)AMINOMETHANE; SAID COGENERIC MIXTURE BEING DERIVED EXCLUSIVELY FROM TRIS(HYDROXYMETHYL)AMINOMETHANE REACTED SUCCESSIVELY WITH BUTYLENE OXIDE, PROPYLENE OXIDE AND ETHYLENE OXIDE UNDER OXYALKYLATION CONDITIONS IN SUCH WEIGHT PROPORTIONS, SO THAT THE AVERAGE COMPOSITION OF SAID COGENERIC MIXTURE STATED IN TERMS OF THE INITIAL REACTANTS, IN SUCH THAT THE PERCENTAGE OF ETHYLENE OXIDE IS WITHIN THE LIMITS OF 2% TO 39.5%, BY WEIGHT, AND THE REMAINING THREE INITIAL REACTANTS RECALCULATED TO 100% BASIS, LIE APPROXIMATELY WITHIN THE TRAINGLE DEFINED IN FIGURE 2 BY POINTS 1, 4 AND 6.
Claim 2
Dependent Claim
96 words
A COGNERIC MIXTURE OF A HOMOLOGOUS SERIES OF GLYCOL ETHERS OF TRIS(HYDROXYMETHYL)AMINOMETHANE; SAID COGENERIC MIXTURE BEING DERIVED EXCLUSIVELY FROM TRIS(HYDROXYMETHYL)AMINOMETHANE REACTED SUCCESSIVELY WITH BUTYLENE OXIDE, PROPYLENE OXIDE AND ETHYLENE OXIDE UNDER OXYALKYLATION CONDITIONS IN SUCH WEIGHT PROPORTIONS, SO THAT THE AVERAGE COMPOSITION OF SAID COGENERIC MIXTURE STATED IN TERMS OF THE INITIAL REACTANTS, IN SUCH THAT THE PERCENTAGE OF ETHYLENE OXIDE IS WITHIN THE LIMITS OF 2% TO 39.5%, BY WEIGHT, AND THE REMAINING THREE INITIAL REACTANTS RECALCULATED TO 100% BASIS, LIE APPROXIMATELY WITHIN THE TRAINGLE DEFINED IN FIGURE 2 BY POINTS 1, 4 AND 6.
References Cited (Backward Citations)
US2552530A
Cited
US2674619A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-17 | 1967-08-19 | 1968-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-17 | 1971-08-19 | 1972-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-17 | 1975-08-19 | 1976-02-18 | $7700.00 | Window Closed / Lapsed |