US4390438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dibasic acids to reduce coefficient of friction in rolling oils
Assignee: ChampionX LLC
•
Filing: 1981-10-16
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Granted: 1983-06-28
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Expires: 2001-10-16
Abstract
Abstract An improved high-content animal fat rolling oil formulation used for cold rolling sheet steel and steel strip for tin plate is achieved by adding effective amounts of a saturated dibasic acid containing from 4-4 carbon atoms to an animal fat formulation including: 1. refined animal fat, 2. minor portions of lubricity additives, 3. anti-oxidants, and 4. emulsifiers and other additives. This improved rolling oil formulation exhibits a drastically decreased coefficient of friction when applied between two metal surfaces.
Inventors
- 👤 Carl S. Kennedy
- 👤 Fred Zellmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:54
CPC Classifications
C; C10; C10M; C10M169/00; C10M169/04; C10M101/00; C10M101/04; C10M129/00; C10M129/02; C10M129/26; C10M129/28; C10M129/30; C10M129/34; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/125; C10M2207/129; C10M2207/22; C10M2207/28; C10M2207/282; C10M2207/34; C10M2207/40; C10M2207/401; C10M2207/404; C10M2207/4045; 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: 4
Claim 1
Independent Claim
65 words
In an improved high animal fat content rolling oil formulation used in cold rolling sheet steel and steel strip for tinplate, comprising a major portion of a refined animal fat, minor portions of lubricity additives, anti-oxidants and emulsifiers, the improvement comprising the further inclusion of a friction reducing amount of at least 0.2 weight percent of a saturated dibasic acid containing from 4-14 carbon atoms.
Claim 2
Dependent Claim
65 words
In an improved high animal fat content rolling oil formulation used in cold rolling sheet steel and steel strip for tinplate, comprising a major portion of a refined animal fat, minor portions of lubricity additives, anti-oxidants and emulsifiers, the improvement comprising the further inclusion of a friction reducing amount of at least 0.2 weight percent of a saturated dibasic acid containing from 4-14 carbon atoms.
Claim 3
Dependent Claim
36 words
The improved high content animal fat rolling oil of claim 1 wherein the saturated dibasic acid is chosen from the group consisting of adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, and mixtures thereof.
Claim 4
Dependent Claim
19 words
The improved high content animal fat rolling oil of claim 1 wherein the saturated dibasic acid is azelaic acid.
References Cited (Backward Citations)
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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) | 1986-06-27 | 1986-12-27 | 1987-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-27 | 1990-12-27 | 1991-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-27 | 1994-12-27 | 1995-06-28 | $7700.00 | Window Closed / Lapsed |