EP0150957A2
Expired / Lapsed
EP
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Improved additive for power transmission shift fluids
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1985-01-16
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Granted: —
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Expires: 2005-01-16
Abstract
Abstract There are disclosed improved additives for power shift transmission fluids being amine or ammonium salts of mercaptobenzothiazole dissolved in excess amine. The additives are useful as corrosion inhibitors, anti-oxidants and friction modifiers.
Inventors
- 👤 Jack Ryer
- 👤 Harold Eugene Deen
- 👤 Ricardo Alfredo Bloch
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 01:32
CPC Classifications
C; C10; C10M; C10M135/00; C10M135/32; C10M135/36; C10M2215/00; C10M2215/086; C10M2215/24; C10M2215/28; C10N; C10N2040/00; C10N2040/08; C10N2040/25; C10N2040/252; C10N2040/253
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
102 words
A power shift transmission fluid composition comprising a major amount of a hydrocarbon mineral oil of lubricating viscosity and an effective oxidation and corrosion inhibiting and friction modifying amount of an additive being an amine or ammonium salt of mercaptobenzothiazole dissolved in an excess of amine, said salt being formed by reacting mercaptobenzothiazole with a molar excess of a liquid amine of the formula R l R 2 R 3 N at 50-80°C wherein R 1 and R 2 are hydrogen or lower alkyl and R 3 is a C 6 -C 20 alkyl or mixture of C 6 -C 20 alkyls.
Claim 2
Dependent Claim
102 words
A power shift transmission fluid composition comprising a major amount of a hydrocarbon mineral oil of lubricating viscosity and an effective oxidation and corrosion inhibiting and friction modifying amount of an additive being an amine or ammonium salt of mercaptobenzothiazole dissolved in an excess of amine, said salt being formed by reacting mercaptobenzothiazole with a molar excess of a liquid amine of the formula R l R 2 R 3 N at 50-80°C wherein R 1 and R 2 are hydrogen or lower alkyl and R 3 is a C 6 -C 20 alkyl or mixture of C 6 -C 20 alkyls.
Claim 3
Dependent Claim
58 words
A composition according to claim 1 wherein R 1 and R 2 are hydrogen and R 3 is a tertiary alkyl group of the formula R 4 R 5 R 6 C- wherein R 4 and R 5 are methyl and R 6 represents either C 15 -C 20 or C 9 -C 11 mixed branched alkyl groups.
Claim 4
Dependent Claim
16 words
The composition of claim 2 wherein there is present 0.2 to 0.5 wt% of said additive.
Claim 5
Dependent Claim
16 words
The composition of claim 1 wherein said power shift transmission fluid is an automatic transmission fluid.
Claim 6
Dependent Claim
18 words
The composition of claim 1 wherein said power shift transmission fluid is a universal heavy duty diesel oil.
Claim 7
Dependent Claim
90 words
The use as an oxidation and corrosion inhibitor and friction modifier for power shift transmission fluids of an amine or ammonium salt of mercaptobenzothiazole dissolved in an excess of amine, said salt being formed by reacting mercaptobenzothiazole with a molar excess of a liquid amine of the formula R 1 R 2 R 3 N at 50 - 80°C wherein R I and R 2 are hydrogen or lower alkyl and R 3 is a C 6 - C 20 alkyl or mixture of C 6 - C 20 alkyls.
Claim 8
Dependent Claim
90 words
The use as an oxidation and corrosion inhibitor and friction modifier for power shift transmission fluids of an amine or ammonium salt of mercaptobenzothiazole dissolved in an excess of amine, said salt being formed by reacting mercaptobenzothiazole with a molar excess of a liquid amine of the formula R 1 R 2 R 3 N at 50 - 80°C wherein R I and R 2 are hydrogen or lower alkyl and R 3 is a C 6 - C 20 alkyl or mixture of C 6 - C 20 alkyls.
References Cited (Backward Citations)
No citation records indexed.
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