US4832860A
Expired / Lapsed
US
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Lubricating oil for metal working
Assignee: Idemitsu Kosan Co Ltd
•
Filing: 1988-07-25
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Granted: 1989-05-23
•
Expires: 2008-07-25
Abstract
Abstract A lubricating oil for metal working comprises a base oil and a diester of a branched aliphatic dicarboxylic acid having from 12 to 28 carbon atoms and a straight chain aliphatic alcohol having from 1 to 6 carbon atoms. The lubricating oil is excellent in rolling properties and causes no heat scratching, and permits the production of rolled plates having good gloss. These properties are further improved by adding a monoester compound having from 13 to 48 carbon atoms to the above oil.
Inventors
- 👤 Tadashi Katafuchi
- 👤 Hiroo Mitazaki
- 👤 Seiichi Shido
- 👤 Yasunori Tomari
- 👤 Kenji Onodera
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:35
CPC Classifications
C; C10; C10M; C10M129/00; C10M129/02; C10M129/68; C10M101/00; C10M101/02; C10M105/00; C10M105/02; C10M105/06; C10M105/08; C10M105/32; C10M107/00; C10M107/20; C10M107/30; C10M107/32; C10M107/34; C10M129/70; C10M129/72; C10M169/00; C10M169/04; C10M2203/00; C10M2203/06; C10M2203/065; C10M2203/10; C10M2203/1006; C10M2203/102; C10M2203/1025; C10M2203/104; C10M2203/1045; C10M2203/106; C10M2203/1065; C10M2203/108; C10M2203/1085; C10M2205/00; C10M2205/02; C10M2205/026; C10M2207/00; C10M2207/28; C10M2207/2805; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/284; C10M2207/285; C10M2207/286; C10M2207/34; C10M2207/345; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/1033; C10M2209/104; C10M2209/1045; C10M2209/105; C10M2209/1055; C10M2209/106; C10M2209/1065; C10M2209/107; C10M2209/1075; C10M2209/108; C10M2209/1085; C10M2209/109; C10M2209/1095; C10N; C10N2040/00; C10N2040/20
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
126 words
A lubricating oil for metal working which comprises mineral oils for synthetic oils having a dynamic viscosity at 40° C. of from 1 to 30 cst, and from 0.5 to 40% by weight based on the weight of a final product of a diester of a branched aliphatic dicarboxylic acid having from 16 to 28 carbon atoms and a straight chain aliphatic alcohol having from 1 to 4 carbon atoms, said dicarboxylic acid being selected from the group consisting of ##STR15## wherein subscript l is 1-3, m is 0-5 and n is 6-18; ##STR16## wherein subscripts p and r is 6 or 7 and subscript q is 2-4; ##STR17## wherein subscript s is 0-2; and ##STR18## wherein subscripts t, u and v are 0-2 and t+u+v=2.
Claim 2
Dependent Claim
126 words
A lubricating oil for metal working which comprises mineral oils for synthetic oils having a dynamic viscosity at 40° C. of from 1 to 30 cst, and from 0.5 to 40% by weight based on the weight of a final product of a diester of a branched aliphatic dicarboxylic acid having from 16 to 28 carbon atoms and a straight chain aliphatic alcohol having from 1 to 4 carbon atoms, said dicarboxylic acid being selected from the group consisting of ##STR15## wherein subscript l is 1-3, m is 0-5 and n is 6-18; ##STR16## wherein subscripts p and r is 6 or 7 and subscript q is 2-4; ##STR17## wherein subscript s is 0-2; and ##STR18## wherein subscripts t, u and v are 0-2 and t+u+v=2.
Claim 3
Dependent Claim
19 words
The lubricating oil as claimed in claim 1, wherein the aliphatic dicarboxylic acid is a saturated aliphatic dicarboxylic acid.
Claim 4
Dependent Claim
16 words
The lubricating oil of claim 1, wherein the dicarboxylic acid has 14 to 24 carbon atoms.
Claim 5
Dependent Claim
16 words
The lubricating oil of claim 1 wherein the dicarboxylic acid has 16 to 20 carbon atoms.
Claim 6
Dependent Claim
15 words
The lubricating oil of claim 1 containing 1 to 30% by weight of the diester.
Claim 7
Dependent Claim
12 words
The lubricating oil of claim 1 wherein the dicarboxylic acid is ##STR19##
Claim 8
Dependent Claim
12 words
The lubricating oil of claim 1 wherein the dicarboxylic acid is ##STR20##
Claim 9
Dependent Claim
12 words
The lubricating oil of claim 1 wherein the dicarboxylic acid is ##STR21##
Claim 10
Dependent Claim
24 words
The lubricating oil of claim 1 wherein the dicarboxylic acid is ##STR22## wherein subscript l is 1-3, m is 0-5 and n is 6-18.
Claim 11
Dependent Claim
12 words
The lubricating oil of claim 1 wherein the dicarboxylic acid is ##STR23##
Claim 12
Dependent Claim
26 words
The lubricating oil of claim 1 wherein the dicarboxylic acid is ##STR24## wherein subscripts p and r is 6 or 7 and subscript q is 2-4.
Claim 13
Dependent Claim
12 words
The lubricating oil of claim 1 wherein the dicarboxylic acid is ##STR25##
Claim 14
Dependent Claim
17 words
The lubricating oil of claim 1 wherein the dicarboxylic acid is ##STR26## wherein subscript s is 0-2.
Claim 15
Dependent Claim
12 words
The lubricating oil of claim 1 wherein the dicarboxylic acid is ##STR27##
Claim 16
Dependent Claim
22 words
The lubricating oil of claim 1 wherein the dicarboxylic acid is ##STR28## wherein subscripts t, u and v are 0-2 and t+u+v=2.
Claim 17
Dependent Claim
12 words
The lubricating oil of claim 1 wherein the dicarboxylic acid is ##STR29##
Claim 18
Dependent Claim
152 words
A lubricating oil for metal working which comprises mineral oils or synthetic oils having a dynamic viscosity at 40° C. of from 1 to 30 cst, and from 0.5 to 40% by weight based on the weight of a final product of a diester of a branched aliphatic dicarboxylic acid having from 16 to 28 carbon atoms and a straight chain aliphatic alcohol having from 1 to 4 carbon atoms, and from 0.5 to 40% by weight based on the weight of a final product of a monoester compound having from 19 to 36 carbon atoms, said dicarboxylic acid being selected from the group consisting of ##STR30## wherein subscript l is 1-3, m is 0-5 and n is 6-18; ##STR31## wherein subscripts p and r is 6 or 7 and subscript q is 2-4; ##STR32## wherein subscript s is 0-2; and ##STR33## wherein subscripts t, u and v are 0-2 and t+u+v=2.
Claim 19
Dependent Claim
152 words
A lubricating oil for metal working which comprises mineral oils or synthetic oils having a dynamic viscosity at 40° C. of from 1 to 30 cst, and from 0.5 to 40% by weight based on the weight of a final product of a diester of a branched aliphatic dicarboxylic acid having from 16 to 28 carbon atoms and a straight chain aliphatic alcohol having from 1 to 4 carbon atoms, and from 0.5 to 40% by weight based on the weight of a final product of a monoester compound having from 19 to 36 carbon atoms, said dicarboxylic acid being selected from the group consisting of ##STR30## wherein subscript l is 1-3, m is 0-5 and n is 6-18; ##STR31## wherein subscripts p and r is 6 or 7 and subscript q is 2-4; ##STR32## wherein subscript s is 0-2; and ##STR33## wherein subscripts t, u and v are 0-2 and t+u+v=2.
Claim 20
Dependent Claim
19 words
The lubricating oil as claimed in claim 17, wherein the aliphatic dicarboxylic acid is a saturated aliphatic dicarboxylic acid.
Claim 21
Dependent Claim
17 words
The lubricating oil of claim 17, wherein the monoester compound has from 13 to 36 carbon atoms.
Claim 22
Dependent Claim
13 words
The lubricating oil of claim 17, wherein the monoester compound is methyl stearate.
Claim 23
Dependent Claim
13 words
The lubricating oil of claim 17, wherein the monoester compound is butyl stearate.
Claim 24
Dependent Claim
13 words
The lubricating oil of claim 17, wherein the monoester compound is octyl stearate.
Claim 25
Dependent Claim
12 words
The lubricating oil of claim 17, wherein the monoester is octyl palmitate.
Claim 26
Dependent Claim
15 words
The lubricating oil of claim 17 comprising 3 to 40% by weight of the monoester.
Claim 27
Dependent Claim
23 words
The lubricating oil of claim 17, comprising 1to 30% by weight of the diester and 3 to 40% by weight of the monoester.
Claim 28
Dependent Claim
12 words
The lubricating oil of claim 17 wherein the dicarboxylic acid is ##STR34##
Claim 29
Dependent Claim
12 words
The lubricating oil of claim 17 wherein the dicarboxylic acid is ##STR35##
Claim 30
Dependent Claim
12 words
The lubricating oil of claim 17 wherein the dicarboxylic acid is ##STR36##
Claim 31
Dependent Claim
24 words
The lubricating oil of claim 17 wherein the dicarboxylic acid is ##STR37## wherein subscript l is 1-3, m is 0-5 and n is 6-18.
Claim 32
Dependent Claim
12 words
The lubricating oil of claim 17 wherein the dicarboxylic acid is ##STR38##
Claim 33
Dependent Claim
26 words
The lubricating oil of claim 17 wherein the dicarboxylic acid is ##STR39## wherein subscripts p and r is 6 or 7 and subscript q is 2-4.
Claim 34
Dependent Claim
12 words
The lubricating oil of claim 17 wherein the dicarboxylic acid is ##STR40##
Claim 35
Dependent Claim
17 words
The lubricating oil of claim 17 wherein the dicarboxylic acid is ##STR41## wherein subscript s is 0-2.
Claim 36
Dependent Claim
12 words
The lubricating oil of claim 17 wherein the dicarboxylic acid is ##STR42##
Claim 37
Dependent Claim
22 words
The lubricating oil of claim 17 wherein the dicarboxylic acid is ##STR43## wherein subscripts t, u and v are 0-2 and t+u+v=2.
Claim 38
Dependent Claim
12 words
The lubricating oil of claim 17 wherein the dicarboxylic acid is ##STR44##
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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) | 1992-05-22 | 1992-11-21 | 1993-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-22 | 1996-11-21 | 1997-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-22 | 2000-11-21 | 2001-05-23 | $7700.00 | Window Closed / Lapsed |