Patent US1903372A successfully refreshed from Google Patents.
Patent US4655947A successfully refreshed from Google Patents.
US4655947A
Expired / Lapsed
US
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Metalworking with a trimethylolalkane ester lubricant
Assignee: Alcoa Corp
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Filing: 1986-07-23
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Granted: 1987-04-07
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Expires: 2006-07-23
Abstract
Abstract A metalworking lubricant composition comprising mineral oil and a trimethylolalkane ester. A metalworking lubricant emulsion is prepared by mixing about 1-5 wt % of the composition with about 95-99 wt % water. A preferred lubricant composition exhibits an unusual combination of lower wear than prior art compositions along with higher friction when tested on aluminum alloy samples. Accordingly, the lubricant composition is suitable for hot rolling or cold rolling aluminum and aluminum alloys.
Inventors
- 👤 Mei-Yuan Tsai
- 👤 Joseph T. Laemmle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:39
CPC Classifications
C; C10; C10M; C10M173/00; C10M129/00; C10M129/02; C10M129/68; C10M129/74; C10M2201/00; C10M2201/02; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10N; C10N2040/00; C10N2040/20; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247; C10N2050/00; C10N2050/01
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
55 words
A metalworking lubricant composition comprising: (a) about 50-99 wt % mineral oil, and (b) about 1-50 wt % of a trimethylolalkane ester having the formula CH 3 (CH 2 ) n C(CH 2 OCOR) 3 , wherein n=2-18 and R=CH 3 , CH 2 CH 3 , or CH 2 CH 2 CH 3 .
Claim 2
Dependent Claim
55 words
A metalworking lubricant composition comprising: (a) about 50-99 wt % mineral oil, and (b) about 1-50 wt % of a trimethylolalkane ester having the formula CH 3 (CH 2 ) n C(CH 2 OCOR) 3 , wherein n=2-18 and R=CH 3 , CH 2 CH 3 , or CH 2 CH 2 CH 3 .
Claim 3
Dependent Claim
27 words
A metalworking lubricant as claimed in claim 1 wherein said composition comprises about 85-98 wt % mineral oil and about 2-15 wt % of the trimethylolalkane ester.
Claim 4
Dependent Claim
27 words
A metalworking lubricant as claimed in claim 1 wherein said composition comprises about 92-97 wt % mineral oil and about 3-8 wt % of the trimethylolalkane ester.
Claim 5
Dependent Claim
16 words
A metalworking lubricant as claimed in claim 1 wherein the ester is a triacetate and n=2-7.
Claim 6
Dependent Claim
25 words
A metalworking lubricant as claimed in claim 4 wherein said triacetate is selected from the group consisting of trimethylolbutane triacetate, trimethylolhexane triacetate, and trimethyloloctane triacetate.
Claim 7
Dependent Claim
14 words
A metalworking lubricant as claimed in claim 4 wherein said triacetate is trimethylolbutane triacetate.
Claim 8
Dependent Claim
48 words
A metalworking lubricant emulsion comprising about 1-5 wt % of the composition of claim 1 wherein the mineral oil comprises about 50-85 wt % of the composition and the ester comprises about 15-50 wt % of the composition, said emulsion further comprising: (c) about 95-99 wt % water.
Claim 9
Dependent Claim
28 words
The emulsion of claim 7 wherein the mineral oil comprises about 60-80 wt % of the composition and the ester comprises about 20-40 wt % of the composition.
Claim 10
Dependent Claim
13 words
The emulsion of claim 7 wherein said ester is a triacetate and n=2-7.
Claim 11
Dependent Claim
22 words
The emulsion of claim 7 wherein said ester is selected from the group consisting of trimethylolbutane triacetate, trimethylolhexane triacetate, and trimethyloloctane triacetate.
Claim 12
Independent Claim
47 words
A method of metalworking comprising the steps of: (a) applying to a metal object a lubricant composition comprising a trimethylolalkane ester having the formula CH 3 (CH 2 ) n C(CH 2 OCOR) 3 , wherein n=2-18, and (b) performing a metalworking operation on the metal object.
Claim 13
Independent Claim
47 words
A method of metalworking comprising the steps of: (a) applying to a metal object a lubricant composition comprising a trimethylolalkane ester having the formula CH 3 (CH 2 ) n C(CH 2 OCOR) 3 , wherein n=2-18, and (b) performing a metalworking operation on the metal object.
Claim 14
Dependent Claim
23 words
A method of metalworking as claimed in claim 11 wherein said composition comprises about 1-100 wt % of the ester, remainder mineral oil.
Claim 15
Dependent Claim
27 words
A method of metalworking as claimed in claim 11 wherein said composition comprises about 85-98 wt % mineral oil and about 2-15 wt % of the ester.
Claim 16
Dependent Claim
27 words
A method of metalworking as claimed in claim 11 wherein said composition comprises about 92-97 wt % mineral oil and about 3-8 wt % of the ester.
Claim 17
Dependent Claim
18 words
A method of metalworking as claimed in claim 11 wherein said metal is aluminum or an aluminum alloy.
Claim 18
Dependent Claim
21 words
A method of metalworking as claimed in claim 11 wherein step (b) comprises hot rolling or cold rolling the metal obJect.
Claim 19
Dependent Claim
26 words
A method of metalworking as claimed in claim 11 wherein said ester is selected from the group consisting of trimethylolbutane triacetate, trimethylolhexane triacetate, and trimethyloloctane triacetate.
Claim 20
Independent Claim
106 words
A method for hot rolling or cold rolling a metal object comprising aluminum or an aluminum alloy, said method comprising the steps of: (a) applying to the metal object a lubricant emulsion comprising about 95-99 wt % water and about 1-5 wt % of a lubricant composition comprising about 50-85 wt % mineral oil and about 15-50 wt % of a trimethylolalkane ester having the formula CH 3 (CH 2 ) n C(CH 2 OCOR) 3 , wherein n=1-18 and R=CH 3 , CH 2 CH 3 , or CH 2 CH 2 CH 3 , and (b) hot rolling or cold rolling the metal object.
Claim 21
Independent Claim
106 words
A method for hot rolling or cold rolling a metal object comprising aluminum or an aluminum alloy, said method comprising the steps of: (a) applying to the metal object a lubricant emulsion comprising about 95-99 wt % water and about 1-5 wt % of a lubricant composition comprising about 50-85 wt % mineral oil and about 15-50 wt % of a trimethylolalkane ester having the formula CH 3 (CH 2 ) n C(CH 2 OCOR) 3 , wherein n=1-18 and R=CH 3 , CH 2 CH 3 , or CH 2 CH 2 CH 3 , and (b) hot rolling or cold rolling the metal object.
Claim 22
Dependent Claim
30 words
A method as claimed in claim 18 wherein the mineral oil comprises about 60-80 wt % of the composition and the ester comprises about 20-40 wt % of the composition.
Claim 23
Dependent Claim
15 words
A method as claimed in claim 18 wherein the ester is a triacetate and n=1-7.
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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) | 1990-04-06 | 1990-10-06 | 1991-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-06 | 1994-10-06 | 1995-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-06 | 1998-10-06 | 1999-04-07 | $7700.00 | Window Closed / Lapsed |