US3232968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing n-acyl taurates using hypophosphorous acid as catalyst
Assignee: GAF Chemicals Corp
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Filing: 1959-12-01
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Granted: 1966-02-01
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Expires: 1979-12-01
Abstract
No abstract record available.
Inventors
- 👤 Leslie M Schenck
- 👤 Jr Leslie G Nunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:42
CPC Classifications
C; C07; C07C; C07C309/00; C07C309/01; C07C309/02; C07C309/03; C07C309/13; C07C309/14; C07C309/15; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A PROCESS COMPRISING ADMIXING AT LEAST ONE MOLE OF AN ACYLATING AGENT SELECTED FROM THE GROUP CONSISTING OF FREE ALIPHATIC AND ALICYCLIC MONOCARBOXYLIC ACIDS OF FROM 8 TO 22 CARBON ATOMS WITH A CATALYTIC AMOUNT OF HYPOPHOSPHOROUS ACID, AND THEN ADDING ONE MOLE OF A TAURINE SALT OF THE FORMULA HR''N-CHR-CHR-SO3M WHEREIN R'' IS SELECTED FROM THE GROUP CONSISTING OF H, CYCLOHEXYL, ABIETINYL, PHENYL, AND ALIPHATIC HYDROCARBON RADICALS OF 1 TO 20 CARBON ATOMS, R IS SELECTED FROM THE GROUP CONSISTING OF H AND LOWER ALKYL, AND M IS A CATION SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS, AND HEATING THE RESULTING MIXTURE AT A TEMPERATURE OF ABOUT 140 TO 320*C. WHILE REMOVING THE WATER FORMED DURING THE REACTION.
Claim 2
Dependent Claim
124 words
A PROCESS COMPRISING ADMIXING AT LEAST ONE MOLE OF AN ACYLATING AGENT SELECTED FROM THE GROUP CONSISTING OF FREE ALIPHATIC AND ALICYCLIC MONOCARBOXYLIC ACIDS OF FROM 8 TO 22 CARBON ATOMS WITH A CATALYTIC AMOUNT OF HYPOPHOSPHOROUS ACID, AND THEN ADDING ONE MOLE OF A TAURINE SALT OF THE FORMULA HR''N-CHR-CHR-SO3M WHEREIN R'' IS SELECTED FROM THE GROUP CONSISTING OF H, CYCLOHEXYL, ABIETINYL, PHENYL, AND ALIPHATIC HYDROCARBON RADICALS OF 1 TO 20 CARBON ATOMS, R IS SELECTED FROM THE GROUP CONSISTING OF H AND LOWER ALKYL, AND M IS A CATION SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS, AND HEATING THE RESULTING MIXTURE AT A TEMPERATURE OF ABOUT 140 TO 320*C. WHILE REMOVING THE WATER FORMED DURING THE REACTION.
References Cited (Backward Citations)
US3150156A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |