US3876550A
Expired / Lapsed
US
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Lubricant compositions
Assignee: Lubrizol Corp
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Filing: 1974-04-15
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Granted: 1975-04-08
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Expires: 1994-04-15
Abstract
Abstract Lubricant compositions comprising a novel additive combination to improve the anti-oxidant and rust-inhibiting properties of these compositions are disclosed. The additive combination comprises an alkylene dithiocarbamate and an aliphatic hydrocarbon-substituted succinic acid or certain derivatives thereof. Lubricant compositions containing the novel additive combination are useful in a variety of applications.
Inventors
- 👤 Zenowie Michael Holubec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:01
CPC Classifications
C; C10; C10M; C10M141/00; C10M141/08; C10M129/00; C10M129/02; C10M129/26; C10M129/28; C10M129/38; C10M129/42; C10M129/68; C10M129/76; C10M135/00; C10M135/12; C10M135/14; C10M135/18; C10M145/00; C10M145/18; C10M145/24; C10M145/26; C10M2203/00; C10M2203/02; C10M2203/022; C10M2203/024; C10M2203/04; C10M2203/06; C10M2203/10; C10M2203/102; C10M2203/104; C10M2203/106; C10M2203/108; C10M2205/00; C10M2205/02; C10M2205/022; C10M2205/024; C10M2205/026; C10M2205/04; C10M2205/14; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/026; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/125; C10M2207/129; C10M2207/22; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/287; C10M2207/288; C10M2207/289; C10M2207/34; C10M2207/40; C10M2207/402; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/106; C10M2209/107; C10M2209/109; C10M2211/00; C10M2211/02; C10M2211/022; C10M2211/04; C10M2211/044; C10M2211/06; C10M2211/08; C10M2213/00; C10M2213/02; C10M2213/06; C10M2213/062; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/20; C10M2215/202; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/02; C10M2217/024; C10M2217/04; C10M2217/042; C10M2217/043; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/068; C10M2219/08; C10M2219/082; C10M2219/083; C10M2219/085; C10M2219/087; C10M2219/088; C10M2219/089; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/045; C10M2223/06; C10M2223/061; C10M2223/12; C10M2225/00; C10M2225/04; C10M2227/00; C10M2227/02; C10M2227/06; C10M2227/061; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/042; C10M2229/045; C10M2229/046; C10M2229/047; C10M2229/048; C10M2229/05; C10N; C10N2010/00; C10N2010/02; C10N2040/00; C10N2040/12; C10N2040/13; C10N2040/135; C10N2040/20; C10N2040/25; C10N2040/252; C10N2040/253; C10N2040/255; C10N2040/26; C10N2040/28; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
113 words
A LUBRICANT COMPOSITION COMPRISING A MAJOR PROPORTION OF A LUBRICATING OIL AND A MINOR PROPORTION, SUFFICIENT TO IMPROVE THE ANTI-OXIDANT AND RUST-INHIBITING PROPERTIES OF THE COMPOSITION, OF AN ADDITIVE COMBINATION COMPRISING (A) ONE OR MORE ALKYLENE DITHIOCARBAMATES AND (B) ONE OR MORE RUST INHIBITORS SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC HYDROCARBON-SUBSTITUTED SUCCINIC ACID, ALIPHATIC HYDROCARBONSUCCINIC ACID ANHYDRIDE, AND THE REACTION PRODUCT OBTAINED BY THE ESTERIFICATION OF THE ACID OR THE ANHYDRATE WITH FROM ABOUT 0.1 MOLE TO ABOUT 1.0 MOLE PER MOLE OF THE ACID OR THE ANHYDRIDE, OF AT LEAST ONE ALKYLENE OXIDE OR ALKYLENE GLYCOL CONTAINING UP TO ABOUT 20 CARBON ATOMS; WHEREIN THE ALKYLENE DITHIOCARBAMATE CORRESPONDS TO THE FORMULA:
Claim 2
Dependent Claim
113 words
A LUBRICANT COMPOSITION COMPRISING A MAJOR PROPORTION OF A LUBRICATING OIL AND A MINOR PROPORTION, SUFFICIENT TO IMPROVE THE ANTI-OXIDANT AND RUST-INHIBITING PROPERTIES OF THE COMPOSITION, OF AN ADDITIVE COMBINATION COMPRISING (A) ONE OR MORE ALKYLENE DITHIOCARBAMATES AND (B) ONE OR MORE RUST INHIBITORS SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC HYDROCARBON-SUBSTITUTED SUCCINIC ACID, ALIPHATIC HYDROCARBONSUCCINIC ACID ANHYDRIDE, AND THE REACTION PRODUCT OBTAINED BY THE ESTERIFICATION OF THE ACID OR THE ANHYDRATE WITH FROM ABOUT 0.1 MOLE TO ABOUT 1.0 MOLE PER MOLE OF THE ACID OR THE ANHYDRIDE, OF AT LEAST ONE ALKYLENE OXIDE OR ALKYLENE GLYCOL CONTAINING UP TO ABOUT 20 CARBON ATOMS; WHEREIN THE ALKYLENE DITHIOCARBAMATE CORRESPONDS TO THE FORMULA:
Claim 3
Dependent Claim
26 words
The lubricant composition of claim 1, wherein the anti-oxidant component of the additive combination is present in the range of from about 0.1 to about 5%.
Claim 4
Dependent Claim
26 words
The lubricant composition of claim 1, wherein the anti-rust component of the additive combination is present in the range of from about 0.01 to about 1%.
Claim 5
Dependent Claim
22 words
The lubricant composition of claim 1, wherein R.sub.5 and R.sub.6 are heterocyclic radicals selected from the group consisting of pyrrolidinyl and piperidino.
Claim 6
Dependent Claim
28 words
The lubricant composition of claim 1, wherein the aliphatic hydrocarbon substituent of the aliphatic hydrocarbon-succinic acid or anhydride has from about 8 to about 30 aliphatic carbon atoms.
Claim 7
Dependent Claim
39 words
The lubricant composition of claim 5, wherein the anti-rust component of the additive combination is the reaction product of the succinic acid or its anhydride with an alkylene oxide or alkylene glycol having from 2 to 6 carbon atoms.
Claim 8
Dependent Claim
22 words
The lubricant composition of claim 6, wherein R.sub.5 and R.sub.6 are heterocyclic radicals selected from the group consisting of pyrrolidinyl and piperidino.
Claim 9
Dependent Claim
23 words
The lubricant composition of claim 6, wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are, independently, alkyl radicals having from 1 to 8 carbon atoms.
Claim 10
Dependent Claim
15 words
The lubricant composition of claim 6, wherein the alkylene radical, X, is a methylene radical.
Claim 11
Dependent Claim
38 words
The lubricant composition of claim 6, wherein the anti-rust component is present in the range of from about 0.02 to about 0.1% and the anti-oxidant component is present in the range of from about 0.25 to about 1%.
Claim 12
Dependent Claim
19 words
The lubricant composition of claim 5, wherein the anti-rust component of the additive combination is an aliphatic hydrocarbon-succinic acid.
Claim 13
Dependent Claim
22 words
The lubricating composition of claim 11, wherein R.sub.5 and R.sub.6 are heterocyclic radicals selected from the group consisting of pyrrolidinyl land piperidino.
Claim 14
Dependent Claim
23 words
The lubricant composition of claim 11, wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are, independently, alkyl radicals having from 1 to 8 carbon atoms.
Claim 15
Dependent Claim
38 words
The lubricating composition of claim 11, wherein the anti-rust component is present in the range of from about 0.01 to about 0.1% and the anti-oxidant component is present in the range of from about 0.25 to about 1%.
Claim 16
Dependent Claim
15 words
The lubricating composition of claim 11, wherein the alkylene radical, X, is a methylene radical.
Claim 17
Dependent Claim
23 words
An additive concentrate comprising a substantially inert carrier and from about 20 to about 90 percent of the additive combination of claim 1.
Claim 18
Dependent Claim
23 words
An additive concentrate comprising a substantially inert carrier and from about 20 to about 90 percent of the additive combination of claim 8.
Claim 19
Dependent Claim
23 words
An additive concentrate comprising a substantially inert carrier and from about 20 to about 90 percent of the additive combination of claim 15.
Claim 20
Dependent Claim
116 words
A steam turbine lubricant composition comprising a major proportion of lubricating oil and a minor proportion, sufficient to improve the anti-oxidant and rust-inhibiting properties of the composition, of an additive combination comprising (A) one or more alkylene dithiocarbamates and (B) one or more rust inhibitors selected from the group consisting of aliphatic hydrocarbon-substituted succinic acid, aliphatic hydrocarbon-succinic acid anhydride, and the reaction product obtained by the esterification of the acid or anhydride with from about 0.1 mole to about 1.0 mole per mole of the acid or anhydride, of at least one alkylene oxide or alkylene glycol containing up to about 20 carbon atoms; wherein the alkylene dithiocarbamate corresponds to the formula: R.sub.1 R.sub.2 N--C(S)--S--X--S--(S)C--NR.sub.3 R.sub.4
Claim 21
Dependent Claim
116 words
A steam turbine lubricant composition comprising a major proportion of lubricating oil and a minor proportion, sufficient to improve the anti-oxidant and rust-inhibiting properties of the composition, of an additive combination comprising (A) one or more alkylene dithiocarbamates and (B) one or more rust inhibitors selected from the group consisting of aliphatic hydrocarbon-substituted succinic acid, aliphatic hydrocarbon-succinic acid anhydride, and the reaction product obtained by the esterification of the acid or anhydride with from about 0.1 mole to about 1.0 mole per mole of the acid or anhydride, of at least one alkylene oxide or alkylene glycol containing up to about 20 carbon atoms; wherein the alkylene dithiocarbamate corresponds to the formula: R.sub.1 R.sub.2 N--C(S)--S--X--S--(S)C--NR.sub.3 R.sub.4
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) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |