US3867296A
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Process for preparing clear bright oleaginous aluminum dispersions
Assignee: Vista Chemical Co
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Filing: 1973-06-25
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Granted: 1975-02-18
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Expires: 1993-06-25
Abstract
Abstract A process for preparing clear bright oleaginous aluminum dispersions comprising admixing an oil soluble dispersing agent, an oleaginous carrier and a volatile solvent with a dispersible alumina, heating and recovering a clear bright oleaginous aluminum dispersion.
Inventors
- 👤 Mack W Hunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:49
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/20; B; B01; B01J; B01J13/00; B01J13/0004; B01J13/0047; C01; C01F; C01F7/00; C01F7/02; C01F7/34; C01F7/36; C10L; C10L1/00; C10L1/10; C10L1/12; C10L1/1233; C01P; C01P2004/00; C01P2004/60; C01P2004/61; C01P2006/00; C01P2006/10; C01P2006/12; C01P2006/14; C01P2006/60; C10M2201/00; C10M2201/02; C10M2201/04; C10M2201/06; C10M2201/062; C10M2203/00; C10M2203/06; C10M2203/10; C10M2203/102; C10M2203/104; C10M2203/106; C10M2203/108; C10M2205/00; C10M2205/02; C10M2205/024; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/14; C10M2207/141; C10M2207/142; C10M2207/16; C10M2207/18; C10M2207/26; C10M2207/262; C10M2207/28; C10M2207/282; C10M2207/34; C10M2207/40; C10M2207/402; C10M2207/404; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/105; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10N; C10N2010/00; C10N2010/06; Y; Y10; Y10S; Y10S516/00; Y10S516/922; Y10S516/924; Y10S516/928
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
215 words
A PROCESS FOR PREPARING CLEAR, BRIGHT ALUMINUMCONTAINING DISPERSIONS CONTAINING AT LEAST 6 WEIGHT PERCENT ALUMINUM, SAID PROCESS COMPRISING: A. ADMIXING AN OIL SOLUBLE DISPERSING AGENT SELECTED FROM THE GROUP CONSISTING OF OIL SOLUBLE SULFONIC ACIDS IN WHICH THE HYDROCARBON PORTION HAS A MOLECULAR WEIGHT BETWEEN ABOUT 350 AND 100 AND HYDROCARBYL CARBOXYLIC ACIDS CONTAINING AT LEAST 8 CARBON ATOMS, AN OLEAGINOUS CARRIER SELECTED FROM THE GROUP CONSISTING OF MINERAL LUBRICATING OILS, SYNTHETIC LUBRICATING OILS, VEGETABLE OILS AND ANIMAL OILS AND A VOLATILE HYDROCARBON SOLVENT HAVING A BOILING POINT AT ATMOSPHERIC PRESSURE BELOW ABOUT 300*F. WITH ALUMINA PREPARED BY THE WATER HYDROLYSIS OF ALUMINUM ALKOXIDES AND HAVING THE FOLLOWING PROPERTIES: (1) CRYSTAL STRUCTURE - ALPHA ALUMINA MONOHYDRATE (2) CRYSTAL STRUCTURE AFTER CALCINING TO 900*F - GAMMA ALUMINA (3) ULTIMATE CRYSTAL SIZE (X-RAY DIFFRACTION) 020 REFLECTION 30-70 A 021 REFLECTION 60-110 A (4) PORE VOLUME 0.35-0.65 CC/G (5) LOOSE BULK DENSITY 35-70 LB/FT (6) PARTICLE SIZE (SIEVE) 45 MICRON : 20% 45 MICRON - 80% (7) AL2O3 CONTENT 65 - 85 WT. % (8) LOSS ON IGNITION 15 - 35 WT. % (9) SURFACE AREA 150 - 350 M2/G TO FORM A MIXTURE OF UNIFORM CONSISTENCY; B. HEATING SAID MIXTURE TO REMOVE SUBSTANTIALLY ALL OF SAID VOLATILE HYDROCARBON SOLVENT; AND C. RECOVERING SAID CLEAR BRIGHT ALUMINUM-CONTAINING DISPERSION.
Claim 2
Dependent Claim
215 words
A PROCESS FOR PREPARING CLEAR, BRIGHT ALUMINUMCONTAINING DISPERSIONS CONTAINING AT LEAST 6 WEIGHT PERCENT ALUMINUM, SAID PROCESS COMPRISING: A. ADMIXING AN OIL SOLUBLE DISPERSING AGENT SELECTED FROM THE GROUP CONSISTING OF OIL SOLUBLE SULFONIC ACIDS IN WHICH THE HYDROCARBON PORTION HAS A MOLECULAR WEIGHT BETWEEN ABOUT 350 AND 100 AND HYDROCARBYL CARBOXYLIC ACIDS CONTAINING AT LEAST 8 CARBON ATOMS, AN OLEAGINOUS CARRIER SELECTED FROM THE GROUP CONSISTING OF MINERAL LUBRICATING OILS, SYNTHETIC LUBRICATING OILS, VEGETABLE OILS AND ANIMAL OILS AND A VOLATILE HYDROCARBON SOLVENT HAVING A BOILING POINT AT ATMOSPHERIC PRESSURE BELOW ABOUT 300*F. WITH ALUMINA PREPARED BY THE WATER HYDROLYSIS OF ALUMINUM ALKOXIDES AND HAVING THE FOLLOWING PROPERTIES: (1) CRYSTAL STRUCTURE - ALPHA ALUMINA MONOHYDRATE (2) CRYSTAL STRUCTURE AFTER CALCINING TO 900*F - GAMMA ALUMINA (3) ULTIMATE CRYSTAL SIZE (X-RAY DIFFRACTION) 020 REFLECTION 30-70 A 021 REFLECTION 60-110 A (4) PORE VOLUME 0.35-0.65 CC/G (5) LOOSE BULK DENSITY 35-70 LB/FT (6) PARTICLE SIZE (SIEVE) 45 MICRON : 20% 45 MICRON - 80% (7) AL2O3 CONTENT 65 - 85 WT. % (8) LOSS ON IGNITION 15 - 35 WT. % (9) SURFACE AREA 150 - 350 M2/G TO FORM A MIXTURE OF UNIFORM CONSISTENCY; B. HEATING SAID MIXTURE TO REMOVE SUBSTANTIALLY ALL OF SAID VOLATILE HYDROCARBON SOLVENT; AND C. RECOVERING SAID CLEAR BRIGHT ALUMINUM-CONTAINING DISPERSION.
Claim 3
Dependent Claim
25 words
The process of claim 1 wherein from about 1 to about 20 weight percent water, based on the alumina added is included in the mixture.
Claim 4
Dependent Claim
23 words
The process of claim 1 wherein said hydrocarbon portion of the sulfonic acid has an average molecular weight between about 370 and 700.
Claim 5
Dependent Claim
44 words
The process of claim 1 wherein said carboxylic acid is selected from the group consisting of naphthenic acids, hydrocarbyl substituted cyclohexane monocarboxylic acids, hydrocarbyl substituted polycyclic hydrocarbyl monocarboxylic acids containing at least 15 carbon atoms and naturally occurring mixtures of predominantly unsaturated fatty acids.
Claim 6
Dependent Claim
17 words
The process of claim 1 wherein said dispersions contain from 8 to about 20 weight percent aluminum.
Claim 7
Dependent Claim
37 words
The process of claim 1 wherein said volatile solvent is selected from the group consisting of petroleum naptha, hexane, heptane, octane, benzene, toluene, glycol ethers and monohydric alcohols containing from about 1 to about 6 carbon atoms.
Claim 8
Dependent Claim
27 words
The process of claim 5 wherein said volatile solvent is selected from the group consisting of hexane, heptane, benzene, butanol and the monomethyl ethers of ethylene glycol.
Claim 9
Dependent Claim
19 words
The process of claim 1 wherein said oleaginous carrier is selected from mineral lubricating oils, and synthetic lubricating oils.
Claim 10
Dependent Claim
24 words
The process of claim 1 wherein stripping gas is introduced during the latter portion of the heating step to further remove said volatile solvent.
Claim 11
Dependent Claim
59 words
The process of claim 1 wherein said oil soluble dispersing agent is an oil soluble sulfonic acid having an average molecular weight of about 420, said volatile solvent is hexane, said oleaginous carrier is 80 pale oil, said heating is conducted at 150*C for about 20 minutes and nitrogen is introduced as a stripping gas during the heating step.
Claim 12
Dependent Claim
25 words
The process of claim 10 wherein water is added to the mixture in an amount equal to about 10 weight percent of the alumina added.
Claim 13
Dependent Claim
79 words
Clear bright aluminum-containing dispersions containing at least about 6 weight percent aluminum dispersed in an oil-soluble dispersing agent selected from the group consisting of oil-soluble sulfonic acids in which the hydrocarbon portion has a molecular weight between about 350 and 1000 and hydrocarbyl carboxylic acids containing at least 8 carbon atoms, and an oleaginous carrier selected from the group consisting of mineral lubricating oils, synthetic lubricating oils, vegetable oils and animal oils, prepared by the process of claim 1.
Claim 14
Dependent Claim
45 words
The dispersion of claim 12 wherein said aluminum is present in a form selected from salts of said sulfonic acids, salts of said hydrocarbyl carboxylic acids and alpha alumina monohydrate and in an amount equal to 8 to about 20 weight percent of the dispersion.
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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |