US4430234A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machining fluid of water soluble type using organic surfactants
Assignee: Nissan Motor Co Ltd
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Filing: 1982-07-06
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Granted: 1984-02-07
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Expires: 2002-07-06
Abstract
Abstract A water soluble machining fluid for use in cutting, grinding, etc. of metal materials. This machining fluid comprises 5-20 parts by weight of either an erythritol fatty acid ester or a glycerol fatty acid ester, 3-15 parts by weight of a sorbitan fatty acid ester, 3-15 parts by weight of an alkylolamide of fatty acid, 3-10 parts by weight of propylene glycol, 1-5 parts by weight of a chelating agent, 0.5-3 parts by weight of a fluorine-containing surface-active agent which is preferably a perfluoro compound, and a suitable amount of water. This machining fluid is high in the lubricating and rust-inhibiting ability, is harmless to the human body and is very low in COD value.
Inventors
- 👤 Masami Hasegawa
- 👤 Takashi Kato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:03
CPC Classifications
C; C10; C10M; C10M173/00; C10M173/02; C10M2201/00; C10M2201/02; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/287; C10M2207/289; C10M2211/00; C10M2211/04; C10M2211/042; C10M2211/044; C10M2211/06; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/08; C10M2215/082; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/28; C10M2215/30; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10N; C10N2040/00; C10N2040/20; C10N2040/22; C10N2050/00; C10N2050/01
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
98 words
A machining fluid for use in machining of metal materials, comprising: water; 5 to 20 parts by weight of a surface-active component which is selected from the group consisting of erythritol fatty acid esters and glycerol fatty acid esters; 3 to 15 parts by weight of a sorbitan fatty acid ester; 3 to 15 parts by weight of an alkylolamide of a fatty acid; 3 to 10 parts by weight of propylene glycol; 1 to 5 parts by weight of a chelating agent for metal ions; and 0.5 to 3 parts by weight of a fluorine-containing surface-active agent.
Claim 2
Dependent Claim
98 words
A machining fluid for use in machining of metal materials, comprising: water; 5 to 20 parts by weight of a surface-active component which is selected from the group consisting of erythritol fatty acid esters and glycerol fatty acid esters; 3 to 15 parts by weight of a sorbitan fatty acid ester; 3 to 15 parts by weight of an alkylolamide of a fatty acid; 3 to 10 parts by weight of propylene glycol; 1 to 5 parts by weight of a chelating agent for metal ions; and 0.5 to 3 parts by weight of a fluorine-containing surface-active agent.
Claim 3
Dependent Claim
17 words
A machining fluid according to claim 1, wherein said fluorine-containing surface-active agent is a perfluoro surface-active agent.
Claim 4
Dependent Claim
25 words
A machining fluid according to claim 2, wherein said perfluoro surface-active agent is a perfluoroalkylcarboxylate the alkyl of which has 5 to 8 carbon atoms.
Claim 5
Dependent Claim
27 words
A machining fluid according to claim 2, wherein said perfluoro surface-active agent is a perfluoroalkylethylene oxide adduct the alkyl of which has 5 to 8 carbon atoms.
Claim 6
Dependent Claim
26 words
A machining fluid according to claim 4, wherein the mole number of ethylene oxide in said adduct is in the range from 8 to 22 moles.
Claim 7
Dependent Claim
26 words
A machining fluid according to claim 2, wherein said perfluoro surface-active agent is a perfluoroalkyl sulfonate the alkyl of which has 5 to 8 carbon atoms.
Claim 8
Dependent Claim
28 words
A machining fluid according to claim 2, wherein side perfluoro surface-active agent is a perfluoroalkyl phosphoric acid ester the alkyl of which has 5 to 8 carbon atoms.
Claim 9
Dependent Claim
25 words
A machining fluid according to claim 1, wherein the fatty acid of the compound selected as said surface-active component has 8 to 22 carbon atoms.
Claim 10
Dependent Claim
28 words
A machining fluid according to claim 8, wherein the fatty acid of said compound is selected from the group consisting of oleic acid, stearic acid and lauric acid.
Claim 11
Dependent Claim
23 words
A machining fluid according to claim 1, wherein the fatty acid of said sorbitan fatty acid ester has 12 to 18 carbon atoms.
Claim 12
Dependent Claim
29 words
A machining fluid according to claim 10, wherein the fatty acid of said sorbitan fatty acid ester is selected from the group consisting of oleic acid and lauric acid.
Claim 13
Dependent Claim
19 words
A machining fluid according to claim 10, wherein said sorbitan fatty acid ester is selected from mono-, sesqui-and di-esters.
Claim 14
Dependent Claim
22 words
A machining fluid according to claim 1, wherein the fatty acid of the fatty acid alkylolamide has 8 to 18 carbon atoms.
Claim 15
Dependent Claim
31 words
A machining fluid according to claim 13, wherein the fatty acid of the fatty acid alkylolamide is selected from the group consisting of fatty acids of coconut oil and palm oil.
Claim 16
Dependent Claim
30 words
A machining fluid according to claim 13, wherein the alkylolamine for the fatty acid alkylolamide is selected from the group consisting of monoethanolamine, diethanolamine, triethanolamine, ethylenediamine, diethylenetriamine, triethylenetetramine and morpholine.
Claim 17
Dependent Claim
27 words
A machining fluid according to claim 1, wherein said chelating agent is selected from the group consisting of salts of ethylenediaminetetraacetic acid, soluble citrates and soluble gluconates.
Claim 18
Dependent Claim
29 words
A machining fluid according to claim 1, wherein the amount of said water is such that the total quantity of the machinining fluid becomes about 100 parts by weight.
References Cited (Backward Citations)
US4237021A
Cited
US4362634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-06 | 1987-08-08 | 1988-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-06 | 1991-08-08 | 1992-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-06 | 1995-08-08 | 1996-02-07 | $7700.00 | Window Closed / Lapsed |