US4612128A
Expired / Lapsed
US
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Lubricant for plastic working of metals
Assignee: Hitachi Ltd
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Filing: 1985-10-02
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Granted: 1986-09-16
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Expires: 2005-10-02
Abstract
Abstract A lubricating composition comprising (a) a lubricating oil, (b) at least one phosphite ester of pentaerythritol, and (c) at least one compound selected from phosphate monoesters and diesters and phosphonates is suitable for metal forming, particularly for plastic working of aluminum and aluminum alloy with excellent formability and heat resistance.
Inventors
- 👤 Takao Uematsu
- 👤 Hiroshi Suzuki
- 👤 Shigeki Komatsuzaki
- 👤 Fumio Nakano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:40
CPC Classifications
C; C10; C10M; C10M137/00; C10M137/02; C10M137/04; C10M105/00; C10M105/74; C10M111/00; C10M137/12; C10M2201/00; C10M2201/04; C10M2201/041; C10M2201/042; C10M2201/06; C10M2201/061; C10M2201/065; C10M2201/066; C10M2201/16; C10M2201/18; C10M2205/00; C10M2205/02; C10M2205/026; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2211/00; C10M2211/06; C10M2213/00; C10M2213/02; C10M2213/06; C10M2213/062; C10M2223/00; C10M2223/003; C10M2223/02; C10M2223/023; C10M2223/04; C10M2223/0405; C10M2223/041; C10M2223/042; C10M2223/049; C10M2223/0495; C10M2223/06; C10M2223/0603; C10M2223/061; C10M2223/065; C10M2223/08; C10M2223/083; C10M2223/10; C10M2223/103; C10M2225/00; C10M2225/02; C10N; C10N2040/00; C10N2040/20; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
38 words
A lubricating composition suitable for metal forming comprising: (a) a lubricating oil, (b) at least one phosphite ester of pentaerythritol, and (c) at least one compound selected from the group consisting of phosphate monoesters, phosphate diesters and phosphonates.
Claim 2
Dependent Claim
38 words
A lubricating composition suitable for metal forming comprising: (a) a lubricating oil, (b) at least one phosphite ester of pentaerythritol, and (c) at least one compound selected from the group consisting of phosphate monoesters, phosphate diesters and phosphonates.
Claim 3
Dependent Claim
48 words
A lubricating composition according to claim 1, wherein the proportion of the component (a) is 98 to 40% by weight and the proportion of a total of the components (b) and (c) is 2 to 60% by weight, the ratio of the components (c)/(b) being 5/95 to 95/5.
Claim 4
Dependent Claim
42 words
A lubricating composition according to claim 1, wherein the phosphite ester of pentaerythritol is represented by the formula: ##STR4## wherein R 1 is an alkyl group, or an alkylphenyl group; and R 2 is an alkyl group, an alkylphenyl group or hydrogen.
Claim 5
Dependent Claim
128 words
A lubricating composition according to claim 1, wherein the phosphate monoester is represented by the formula: ##STR5## wherein R 3 is an alkyl group; R 6 is an alkylphenyl group; R 4 O is an ethylene oxide group, a propylene oxide group, or a butylene oxide group; and m and p are independently an integer of 2 to 15, and the phosphate diester is represented by the formula: ##STR6## wherein R 3 and R 5 are independently an alkyl group; R 4 O is an ethylene oxide group, a propylene oxide group, or a butylene oxide group; R 6 and R 7 are independently an alkylphenyl group; n, s, q and r are independently an integer and (n+s)/2 being 2 to 15 and (q+r)/2 being 2 to 15.
Claim 6
Dependent Claim
32 words
A lubricating composition according to claim 1, wherein the phosphonate is represented by the formula: ##STR7## wherein R 8 is an alkyl group; and t is zero or an integer of 1.
Claim 7
Dependent Claim
45 words
A lubricating composition according to claim 1, wherein the proportion of the component (a) is 95 to 40% by weight, the proportion of the component (b) is 2 to 25% by weight, and the proportion of the component (c) is 3 to 35% by weight.
Claim 8
Dependent Claim
43 words
A process for plastic forming a metallic workpiece which comprises coating the lubricating composition of claim 1 on a surface of a metallic workpiece, and conducting plastic forming of the metallic workpiece in the presence of a film formed by the lubricating composition.
Claim 9
Dependent Claim
17 words
A process according to claim 7, wherein the metallic workpiece is made of aluminum or aluminum alloy.
Claim 10
Dependent Claim
11 words
A metallic workpiece coated with the lubricating composition of claim 1.
Claim 11
Dependent Claim
18 words
A metallic workpiece according to claim 9, wherein the metallic workpiece is made of aluminum or aluminum alloy.
Claim 12
Dependent Claim
67 words
A lubricating composition suitable for metal forming comprising (a) a lubricating oil, (b) at least one phosphite ester of pentaerythritol represented by the formula: ##STR8## wherein R 1 and R 2 are independently an alkyl group or an alkylphenyl group, and (c) at least one phosphonate represented by the formula: ##STR9## wherein R 8 is an alkyl group; and t is zero or an integer of 1.
Claim 13
Dependent Claim
67 words
A lubricating composition suitable for metal forming comprising (a) a lubricating oil, (b) at least one phosphite ester of pentaerythritol represented by the formula: ##STR8## wherein R 1 and R 2 are independently an alkyl group or an alkylphenyl group, and (c) at least one phosphonate represented by the formula: ##STR9## wherein R 8 is an alkyl group; and t is zero or an integer of 1.
Claim 14
Dependent Claim
45 words
A lubricating composition according to claim 11, wherein the proportion of the component (a) is 95 to 40% by weight, the proportion of the component (b) is 2 to 25% by weight, and the proportion of the component (c) is 3 to 35% by weight.
Claim 15
Dependent Claim
19 words
A lubricating composition according to claim 11, wherein the lubricating oil is a mineral oil or a synthetic oil.
Claim 16
Dependent Claim
69 words
A lubricating composition according to claim 11, wherein the alkyl group in the definitions of R 1 and R 2 in the formula (I) is an octyl group, an isodecyl group, a lauryl group, a tridecyl group, a palmityl group or a stearyl group; and the alkylphenyl group in the definitions of R 1 and R 2 in the formula (I) is a nonylphenyl group or an octylphenyl group.
Claim 17
Dependent Claim
29 words
A lubricating composition according to claim 11, wherein the alkyl group in the definition of R 8 in the formula (VI) is a butyl group or an octyl group.
Claim 18
Dependent Claim
131 words
A lubricating composition suitable for metal forming comprising (a) a lubricating oil, (b) at least one phosphite ester of pentaery thritol represented by the formula: ##STR10## wherein R 1 is an alkyl group or an alkylphenyl group; and R 2 is an alkyl group, an alkylphenyl group or hydrogen, and (c) at least one compound selected from the group consisting of phosphate monoesters and diesters represented by the formulae: ##STR11## wherein R 3 and R 5 are independently an alkyl group; R 4 O is an ethylene oxide group, a propylene oxide group or a butylene oxide group; R 6 and R 7 are independently an alkylphenyl group; m and p are independently an integer of 2 to 15, and (n+s)/2 and (q+r)/2 are independently an integer of 2 to 15.
Claim 19
Dependent Claim
131 words
A lubricating composition suitable for metal forming comprising (a) a lubricating oil, (b) at least one phosphite ester of pentaery thritol represented by the formula: ##STR10## wherein R 1 is an alkyl group or an alkylphenyl group; and R 2 is an alkyl group, an alkylphenyl group or hydrogen, and (c) at least one compound selected from the group consisting of phosphate monoesters and diesters represented by the formulae: ##STR11## wherein R 3 and R 5 are independently an alkyl group; R 4 O is an ethylene oxide group, a propylene oxide group or a butylene oxide group; R 6 and R 7 are independently an alkylphenyl group; m and p are independently an integer of 2 to 15, and (n+s)/2 and (q+r)/2 are independently an integer of 2 to 15.
Claim 20
Dependent Claim
48 words
A lubricating composition according to claim 16, wherein the proportion of the component (a) is 98 to 40% by weight and the proportion of a total of the components (b) and (c) is 2 to 60% by weight, the ratio of the components (c)/(b) being 5/95 to 95/5.
Claim 21
Dependent Claim
19 words
A lubricating composition according to claim 16, wherein the component (a) is a mineral oil or a synthetic oil.
Claim 22
Dependent Claim
60 words
A lubricating composition according to claim 16, wherein the alkyl group in the definition of R 1 and R 2 in the formula (I) is an octyl group, an isodecyl group or a lauryl group, and the alkylphenyl group in the definition of R 1 and R 2 in the formula (I) is a nonylphenyl group or an octylphenyl group.
Claim 23
Dependent Claim
76 words
A lubricating composition according to claim 16, wherein the alkyl group in the definitions of R 3 and R 5 in the formulae (II) and (III) is an octyl group, an isodecyl group, a lauryl group, a tridecyl group, a palmityl group, a stearyl group or an oleyl group, and the alkylphenyl group in the definitions of R 6 and R 7 in the formulae (IV) and (V) is a nonylphenyl group or an octylphenyl group.
Claim 24
Dependent Claim
43 words
A process for plastic forming a metallic workpiece which comprises coating the lubricating composition of claim 11 on a surface of a metallic workpiece, and conducting plastic forming of the metallic workpiece in the presence of a film formed by the lubricating composition.
Claim 25
Dependent Claim
43 words
A process for plastic forming a metallic workpiece which comprises coating the lubricating composition of claim 16 on a surface of a metallic workpiece, and conducting plastic forming of the metallic workpiece in the presence of a film formed by the lubricating composition.
Claim 26
Dependent Claim
11 words
A metallic workpiece coated with the lubricating composition of claim 11.
Claim 27
Dependent Claim
11 words
A metallic workpiece coated with the lubricating composition of claim 16,
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) | 1989-09-15 | 1990-03-17 | 1990-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-15 | 1994-03-17 | 1994-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-15 | 1998-03-17 | 1998-09-16 | $7700.00 | Window Closed / Lapsed |