US4701273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant compositions containing antioxidants, amine phosphates and 4- (5-) methyl-1-[di-(2-ethylhexyl) aminomethyl]-benzotriazole
Assignee: BASF Corp
•
Filing: 1986-09-10
•
Granted: 1987-10-20
•
Expires: 2006-09-10
Abstract
Abstract Lubricant formulations containing a combination, which has a synergistic action in respect of metal deactivation, composed of 1-[di-(2-ethylhexyl)-aminomethyl]-benztriazole which is methylated in the benzene ring in the 4-position and/or 5-position, and an antioxidant selected from a small group of antioxidants. Further additives can be added to these lubricant formulations. The compositions mentioned above reduce the abrasion phenomena in the components to be lubricated if they are added to mineral and synthetic lubricating oils, hydraulic fluids and lubricating greases.
Inventors
- 👤 Arthur Brady
- 👤 Ulrich Kristen
- 👤 Hermann F. Angerer
- 👤 Franz Regenass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:34
CPC Classifications
C; C10; C10M; C10M141/00; C10M129/00; C10M129/02; C10M129/04; C10M129/10; C10M129/14; C10M129/68; C10M129/76; C10M133/00; C10M133/02; C10M133/04; C10M133/12; C10M133/38; C10M133/44; C10M135/00; C10M135/20; C10M135/22; C10M135/26; C10M137/00; C10M137/02; C10M137/04; C10M137/08; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2207/026; C10M2207/027; C10M2207/28; C10M2207/287; C10M2207/288; C10M2207/289; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/066; C10M2215/067; C10M2215/068; C10M2215/22; C10M2215/221; C10M2215/223; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/085; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/043
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
64 words
A stabilizer system which contains (a) 1-[di-(2-ethylhexyl)-aminomethyl[-benztriazole which is substituted by methyl in the 4-position and/or 5-position in the benzene ring, and (b) at least one antioxidant selected from the group consisting of pentaerythrityl tetrakis-[3-(3,5-di-tert.-butyl-4-hydroxyphenyl)-propionate], isooctyl 3,5-di-tert.-butyl-4-hydroxybenzylmercaptoacetate, o-tert.-butylphenol, 2,6-di-tert.-butyl-4-methylphenol, 4,4'-methylenebis-(2,6-di-tert.-butylphenol), tert.-octylated N-phenyl-1-naphthylamine, and a mixture of monoalkylated and dialkylated tert.-butyldiphenyl-amines/tert.-octyldiphenylamines, where the weight ratio between component (a) and component (b) is 1:2 to 1:10.
Claim 2
Dependent Claim
64 words
A stabilizer system which contains (a) 1-[di-(2-ethylhexyl)-aminomethyl[-benztriazole which is substituted by methyl in the 4-position and/or 5-position in the benzene ring, and (b) at least one antioxidant selected from the group consisting of pentaerythrityl tetrakis-[3-(3,5-di-tert.-butyl-4-hydroxyphenyl)-propionate], isooctyl 3,5-di-tert.-butyl-4-hydroxybenzylmercaptoacetate, o-tert.-butylphenol, 2,6-di-tert.-butyl-4-methylphenol, 4,4'-methylenebis-(2,6-di-tert.-butylphenol), tert.-octylated N-phenyl-1-naphthylamine, and a mixture of monoalkylated and dialkylated tert.-butyldiphenyl-amines/tert.-octyldiphenylamines, where the weight ratio between component (a) and component (b) is 1:2 to 1:10.
Claim 3
Dependent Claim
87 words
A stabilizer system according to claim 1 which additionally contains (c) a compound of formula I ##STR2## in which R 1 , R 2 and R 3 are identical or different and R 1 , R 2 and R 3 are each hydrogen or C 1 -C 18 -alkyl, C 16 -C 18 -alkenyl methyl, phenyl, naphthyl or C 5 -C 6 -cycloalkyl and R is C 4 -C 12 -alkyl, where the weight ratio between component (c) and components (a) plus (b) is 1:0.5 to 1:4.
Claim 4
Dependent Claim
59 words
A lubricant composition which comprises (a) a mineral or snythetic lubricating oil, fluid or grease, (b) 0.01 to 5% by weight, based on the total weight of the composition, of an antioxidant according to claim 1 , and (c) 0.001 to 5% by weight, based on the total weight of the composition, of the 4-(5-)-methyl-1-[di-(2-ethylhexyl)aminomethyl]-benzotriazole according to claim 1.
Claim 5
Dependent Claim
29 words
A composition according to claim 3 wherein, based on the total composition, 0.1 to 2% by weight of antioxidant; and 0.01 to 1% by weight of 4-(5-)-methyl-1-[di-((2-ethylhexyl)aminomethyl]-benzotriazole are present.
Claim 6
Dependent Claim
82 words
A lubricant composition according to claim 3 which additionally contains (d) 0.01 to 2% by weight, based on the total composition, of a compound of formula I ##STR3## in which R 1 , R 2 and R 3 are identical or different and R 1 , R 2 and R 3 are each hydrogen or C 1 -C 18 -alkyl, C 16 -C 18 -alkenyl methyl, phenyl, naphthyl or C 5 -C 6 -cycloalkyl and R is C 4 -C 12 -alkyl.
Claim 7
Dependent Claim
20 words
A method of stabilising lubricants by adding to them an effective amount of the stabiliser system according to claim 1.
Claim 8
Dependent Claim
20 words
A method of stabilising lubricants by adding to them an effective amount of the stabiliser system according to claim 2.
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) | 1990-10-19 | 1991-04-20 | 1991-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-19 | 1995-04-20 | 1995-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-19 | 1999-04-20 | 1999-10-20 | $7700.00 | Window Closed / Lapsed |