US3280179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processes for producing acyclic surfactant sulfobetaines
Assignee: Henkel Corp
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Filing: 1961-03-16
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Granted: 1966-10-18
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Expires: 1981-03-16
Abstract
No abstract record available.
Inventors
- 👤 Ernst Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:46
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/16; C07D213/20; C07D233/00; C07D233/04; C07D233/06; C07D233/08; C07D233/12; C07D233/14; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A PROCESS FOR PRODUCING IONIC NEUTRAL SULFOBETAINES WHICH COMPRISES MIXING A TERTIARY AMINE WITH PROPANE SULTONE. IN A SOLVENT CHOSEN FROM THE GROUP CONSISTING OF WATER AND MIXTURES OF WATER AND AN ALCOHOL CHOSEN FROM THE GROUP CONSISTING OF ETHANOL AND ISOPROPANOL, SAID PROPANE SULTONE BEING EMPLOYED IN A MOLAR RATIO OF AT LEAST ONE MOLE OF PROPANE SULTONE PER ATOM OF SAID TERTIARY AMINE CONTAINING SUBSTITUENTS ON THE NITROGEN WHICH ARE ALL LINKED TO THE NITROGEN THROUGH A NONAROMATIC CARBON, AND AT LEAST ONE AND NOT MORE THAN TWO OF SAID SUBSTITUENTS ON THE SAID TERTIARY NITROGEN CONTAINING UNINTERRUPTED STRAIGHT CARBON-CARBON CHAINS LINKED TO THE TERTIARY NITROGEN THROUGH A NON-AROMATIC CARBON, SAID CHAINS BEING NOT LESS THAN C8 AND NOT MORE THAN C18 AND SAID SUBSTITUENTS BEING SUBSTANTIALLY FREE OF OXYGENATED GROUPS SELECTED FROM THE GROUP CONSISTING OF HYDROXY ALKYL AND POLYGLYCOL ETHER GROUPS, AND MAINTAINING SAID PROPANE SULTONE AND SAID TERTIARY AMINE AT AN ELEVATED TEMPERATURE TO FORM THE SAID SULFOBETAINE. TERTIARY NITROGEN PRESENT IN SAID TERTIARY AMINE,
Claim 2
Dependent Claim
170 words
A PROCESS FOR PRODUCING IONIC NEUTRAL SULFOBETAINES WHICH COMPRISES MIXING A TERTIARY AMINE WITH PROPANE SULTONE. IN A SOLVENT CHOSEN FROM THE GROUP CONSISTING OF WATER AND MIXTURES OF WATER AND AN ALCOHOL CHOSEN FROM THE GROUP CONSISTING OF ETHANOL AND ISOPROPANOL, SAID PROPANE SULTONE BEING EMPLOYED IN A MOLAR RATIO OF AT LEAST ONE MOLE OF PROPANE SULTONE PER ATOM OF SAID TERTIARY AMINE CONTAINING SUBSTITUENTS ON THE NITROGEN WHICH ARE ALL LINKED TO THE NITROGEN THROUGH A NONAROMATIC CARBON, AND AT LEAST ONE AND NOT MORE THAN TWO OF SAID SUBSTITUENTS ON THE SAID TERTIARY NITROGEN CONTAINING UNINTERRUPTED STRAIGHT CARBON-CARBON CHAINS LINKED TO THE TERTIARY NITROGEN THROUGH A NON-AROMATIC CARBON, SAID CHAINS BEING NOT LESS THAN C8 AND NOT MORE THAN C18 AND SAID SUBSTITUENTS BEING SUBSTANTIALLY FREE OF OXYGENATED GROUPS SELECTED FROM THE GROUP CONSISTING OF HYDROXY ALKYL AND POLYGLYCOL ETHER GROUPS, AND MAINTAINING SAID PROPANE SULTONE AND SAID TERTIARY AMINE AT AN ELEVATED TEMPERATURE TO FORM THE SAID SULFOBETAINE. TERTIARY NITROGEN PRESENT IN SAID TERTIARY AMINE,
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |