US3231494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rust preventive prepared from sodium nitrite and the reaction product of fatty acid and imidazoline
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1961-08-22
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Granted: 1966-01-25
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Expires: 1981-08-22
Abstract
No abstract record available.
Inventors
- 👤 Arnold J Morway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:22
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C07; C07D; C07D233/00; C07D233/04; C07D233/06; C07D233/08; C07D233/12; C07D233/16; C10; C10M; C10M1/00; C10M1/08; C10M2201/00; C10M2201/04; C10M2201/041; C10M2201/08; C10M2201/082; C10M2201/083; C10M2201/10; C10M2201/102; C10M2201/103; C10M2201/105; C10M2205/00; C10M2205/02; C10M2205/022; C10M2205/14; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/125; C10M2207/129; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/22; C10M2215/223; C10M2215/224; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A METHOD OF PREPARING A RUST PREVENTIVE ADDITIVE CONCENTRATE CONTAINING FINELY DIVIDED SODIUM NITRITE COMPRISING REACTING BY SIMPLE MIXING OF A MOLAR PROPORTION OF IMIDAZOLINE WITH 1 TO 2 MOLAR PROPORTIONS OF A C2 TO C30 FATTY ACID IN THE PRESENCE OF WATER TO FORM A GEL, DISPERSING SODIUM NITRITE INTO SAID GEL, HEATING SAID GEL TO VOLATILIZE THE WATER PRESENT AND THEREBY FORM A DEHYDRATED GEL, AND THEN ADDING AND MIXING MINERAL LUBRICATING OIL AND COOLING THE PRODUCT TO THEREBY FORM SAID CONCENTRATE AS A STABLE DISPERSION OF SMALL PARTICLE SIZE SODIUM NITRITE IN THE REACTION PRODUCT OF SAID IMIDAZOLINE AND SAID FATTY ACID, WHEREIN THE AMOUNT OF SODIUM NITRITE IS ABOUT 0.1 TO 10.0 PARTS BY WEIGHT PER PART BY WEIGHT OF SAID REACTION PRODUCT, AND SAID OIL CONSTITUTES 10 TO 90 WT. PERCENT OF SAID CONCENTRATE, WHEREIN SAID IMIDAZOLINE HAS THE GENERAL FORMULA
Claim 2
Independent Claim
146 words
A METHOD OF PREPARING A RUST PREVENTIVE ADDITIVE CONCENTRATE CONTAINING FINELY DIVIDED SODIUM NITRITE COMPRISING REACTING BY SIMPLE MIXING OF A MOLAR PROPORTION OF IMIDAZOLINE WITH 1 TO 2 MOLAR PROPORTIONS OF A C2 TO C30 FATTY ACID IN THE PRESENCE OF WATER TO FORM A GEL, DISPERSING SODIUM NITRITE INTO SAID GEL, HEATING SAID GEL TO VOLATILIZE THE WATER PRESENT AND THEREBY FORM A DEHYDRATED GEL, AND THEN ADDING AND MIXING MINERAL LUBRICATING OIL AND COOLING THE PRODUCT TO THEREBY FORM SAID CONCENTRATE AS A STABLE DISPERSION OF SMALL PARTICLE SIZE SODIUM NITRITE IN THE REACTION PRODUCT OF SAID IMIDAZOLINE AND SAID FATTY ACID, WHEREIN THE AMOUNT OF SODIUM NITRITE IS ABOUT 0.1 TO 10.0 PARTS BY WEIGHT PER PART BY WEIGHT OF SAID REACTION PRODUCT, AND SAID OIL CONSTITUTES 10 TO 90 WT. PERCENT OF SAID CONCENTRATE, WHEREIN SAID IMIDAZOLINE HAS THE GENERAL FORMULA
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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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |