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US4122033A
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Oxidation inhibitor and compositions containing the same
Assignee: Individual
•
Filing: 1976-11-26
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Granted: 1978-10-24
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Expires: 1996-11-26
Abstract
Abstract A method for stabilizing organic materials against autoxidation, a composition useful therefor and organic compositions containing the autoxidation stabilizers. The method comprises the steps of adding a compound capable of reducing the peroxide content and a transition metal containing compound to an organic material and thereafter recovering a stabilized composition. The components of the inhibitor may be added separately or simultaneously and the same may be added directly to the organic material or first combined in a concentrated solution and then added to the organic material. The basic and neutral primary, secondary and tertiary amines have been found particularly effective in reducing the peroxide content. Also, the transition metal salts containing cations which easily change valence by a single electron are the most effective transition metal salts. The inhibitor combination is effective in both liquid and solid compositions. The inhibitor combination is particularly effective in both natural and synthetic lubricating oil compositions, grease compositions, polymers and the like. When used at the most effective relative and actual concentrations, the inhibitor combination will yield stability comparable to that exhibited by conventional oxidation inhibitors even though one component is a known oxidation catalyst.
Inventors
- 👤 James F. Black
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 05:53
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C09; C09K; C09K15/00; C09K15/04; C09K15/32; C09K15/322; C09K15/324; C10M; C10M159/00; C10M159/12; C10M159/18; C10M2201/00; C10M2201/08; C10M2201/081; C10M2201/082; C10M2201/084; C10M2203/00; C10M2203/10; C10M2203/102; C10M2205/00; C10M2205/02; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/125; C10M2207/129; C10M2207/14; C10M2207/142; C10M2207/16; C10M2207/22; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/30; C10M2207/302; C10M2207/304; C10M2207/32; C10M2207/34; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/24; C10M2215/26; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/085; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/06; C10M2223/061; C10M2223/065; C10M2227/00; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/02; C10N2010/14; C10N2010/16; C10N2050/00; C10N2050/10; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 45
Claim 1
Independent Claim
112 words
A method for stabilizing an organic material against autoxidation comprising the steps of: (a) adding about 100 to about 20,000 ppm by weight of a compound capable of reducing the peroxide content and compatible with the other components of the system, said compound selected from the group consisting of: (i) aliphatic amines, (ii) alkyl selenides, and (iii) alkyl phosphines and phosphites; wherein the aliphatic and alkyl portions of said compound each contain from about 1 to about 50 carbon atoms; (b) adding at least about 100 ppm by weight of a transition metal containing compound which is compatible with the other components of the system; and (c) recovering a stabilized organic material.
Claim 2
Independent Claim
112 words
A method for stabilizing an organic material against autoxidation comprising the steps of: (a) adding about 100 to about 20,000 ppm by weight of a compound capable of reducing the peroxide content and compatible with the other components of the system, said compound selected from the group consisting of: (i) aliphatic amines, (ii) alkyl selenides, and (iii) alkyl phosphines and phosphites; wherein the aliphatic and alkyl portions of said compound each contain from about 1 to about 50 carbon atoms; (b) adding at least about 100 ppm by weight of a transition metal containing compound which is compatible with the other components of the system; and (c) recovering a stabilized organic material.
Claim 3
Dependent Claim
27 words
The method of claim 1 wherein the cation portion of the transition metal compound is derived from a transition metal which changes valence easily by one electron.
Claim 4
Dependent Claim
18 words
The method of claim 2 wherein said compound capable of reducing the peroxide content is an aliphatic amine.
Claim 5
Dependent Claim
27 words
The method of claim 3 wherein the transition metal containing compound is a salt of an organic acid having from about 1 to about 50 carbon atoms.
Claim 6
Dependent Claim
22 words
The method of claim 4 wherein said transition metal is selected from the group consisting of copper, manganese, chromium, iron and cobalt.
Claim 7
Dependent Claim
30 words
The method of claim 5 wherein said aliphatic amine is a primary, secondary or tertiary aliphatic amine wherein each aliphatic group contains from about 8 to about 18 carbon atoms.
Claim 8
Dependent Claim
23 words
The method of claim 6 wherein the hydrocarbon portion of said transition metal salt contains from about 8 to about 18 carbon atoms.
Claim 9
Dependent Claim
13 words
The method of claim 7 wherein the transition metal salt is copper naphthenate.
Claim 10
Dependent Claim
14 words
The method of claim 7 wherein a mixture of transition metal salts is used.
Claim 11
Dependent Claim
21 words
The method of claim 9 wherein the transition metal salt mixture comprises a salt of chromium and a salt of manganese.
Claim 12
Dependent Claim
20 words
The method of claim 9 wherein the transition metal mixture comprises a salt of chromium and a salt of cobalt.
Claim 13
Dependent Claim
21 words
The method of claim 9 wherein the transition metal salt mixture comprises a salt of manganese and a salt of iron.
Claim 14
Dependent Claim
21 words
The method of claim 9 wherein the transition metal salt mixture comprises a salt of manganese and a salt of copper.
Claim 15
Dependent Claim
21 words
The method of claim 9 wherein the transition metal salt mixture comprises a salt of iron and a salt of cobalt.
Claim 16
Dependent Claim
21 words
The method of claim 9 wherein the transition metal salt mixture comprises a salt of cobalt and a salt of copper.
Claim 17
Dependent Claim
10 words
The method of claim 7 wherein the amine is trioctylamine.
Claim 18
Dependent Claim
10 words
The method of claim 7 wherein the amine is dodecylamine.
Claim 19
Dependent Claim
21 words
The method of claim 7 wherein from about 1000 to about 10,000 ppm by weight of said aliphatic amine is used.
Claim 20
Dependent Claim
22 words
The method of claim 18 wherein from about 100 to about 5000 ppm by weight of said transition metal salt is used.
Claim 21
Dependent Claim
22 words
The method of claim 4 wherein the compound capable of reducing the peroxide content and the transition metal salt are added simultaneously.
Claim 22
Dependent Claim
37 words
The method of claim 20 wherein the compound capable of reducing the peroxide content and the transition metal salt are added to the organic material as a concentrated solution of said components dissolved in an organic solvent.
Claim 23
Dependent Claim
102 words
An organic composition stabilized against autoxidation comprising an organic material and (a) from about 100 to about 20,000 ppm by weight of a compound capable of reducing the peroxide content and compatible with the other components of the composition, said compound selected from the group consisting of: (i) aliphatic amines, (ii) alkyl selenides, and (iii) alkyl phosphines and phosphites; wherein the aliphatic and alkyl portions of said compound each contain from about 1 to about 50 carbon atoms; and (b) at least about 100 ppm by weight of a transition metal compound which is compatible with the other components of the composition.
Claim 24
Dependent Claim
102 words
An organic composition stabilized against autoxidation comprising an organic material and (a) from about 100 to about 20,000 ppm by weight of a compound capable of reducing the peroxide content and compatible with the other components of the composition, said compound selected from the group consisting of: (i) aliphatic amines, (ii) alkyl selenides, and (iii) alkyl phosphines and phosphites; wherein the aliphatic and alkyl portions of said compound each contain from about 1 to about 50 carbon atoms; and (b) at least about 100 ppm by weight of a transition metal compound which is compatible with the other components of the composition.
Claim 25
Dependent Claim
27 words
The composition of claim 22 wherein the cation of said transition metal containing compound is derived from a transition metal which changes valence easily by one electron.
Claim 26
Dependent Claim
16 words
The composition of claim 23 wherein said compound capable of reducing peroxide is an aliphatic amine.
Claim 27
Dependent Claim
27 words
The composition of claim 24 wherein the transition metal containing compound is a salt of an organic acid having from about 1 to about 50 carbon atoms.
Claim 28
Dependent Claim
22 words
The composition of claim 25 wherein said transition metal is selected from the group consisting of copper, manganese, chromium, iron and cobalt.
Claim 29
Dependent Claim
30 words
The composition of claim 26 wherein said aliphatic amine is a primary, secondary or tertiary aliphatic amine wherein each aliphatic group contains from about 8 to about 18 carbon atoms.
Claim 30
Dependent Claim
23 words
The composition of claim 27 wherein the hydrocarbon portion of said transition metal salt contains from about 8 to about 18 carbon atoms.
Claim 31
Dependent Claim
21 words
The composition of claim 28 wherein from about 1000 to about 10,000 ppm by weight of said aliphatic amine is used.
Claim 32
Dependent Claim
22 words
The composition of claim 29 wherein from about 100 to about 5000 ppm by weight of said transition metal salt is used.
Claim 33
Dependent Claim
12 words
The composition of claim 29 wherein said amine is trioctylamine or dodecylamine.
Claim 34
Dependent Claim
13 words
The composition of claim 31 wherein the transition metal salt is copper naphthenate.
Claim 35
Dependent Claim
26 words
The composition of claim 32 wherein said organic material is selected from the group consisting of hydrocarbons, hydrocarbon polymers and natural or synthetic lubricating base oils.
Claim 36
Dependent Claim
12 words
The composition of claim 24 wherein said organic material is a polymer.
Claim 37
Dependent Claim
11 words
The composition of claim 34 wherein said polymer is a polyolefin.
Claim 38
Dependent Claim
15 words
The composition of claim 34 wherein said polymer is a polymer of a substituted olefin.
Claim 39
Dependent Claim
10 words
The composition of claim 34 wherein said polymer is polypropylene.
Claim 40
Dependent Claim
15 words
The composition of claim 24 wherein said organic material is a lubricating base oil stock.
Claim 41
Dependent Claim
17 words
The composition of claim 38 wherein said lubricating base oil stock is a solvent neutral base oil.
Claim 42
Dependent Claim
16 words
The composition of claim 38 wherein said lubricating base oil stock is an ester base oil.
Claim 43
Dependent Claim
13 words
The composition of claim 24 wherein said organic material is a solid lubricant.
Claim 44
Dependent Claim
17 words
The composition of claim 41 wherein said solid lubricant is a lithium hydroxy substituted stearate thickened grease.
Claim 45
Dependent Claim
17 words
The composition of claim 41 wherein said solid lubricant is a lithium epoxy substituted stearate thickened grease.
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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) | 1981-10-23 | 1982-04-24 | 1982-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-23 | 1986-04-24 | 1986-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-23 | 1990-04-24 | 1990-10-24 | $7700.00 | Window Closed / Lapsed |