Patent US4243537A successfully refreshed from Google Patents.
US4243537A
Expired / Lapsed
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Synthetic metal working lubricant
Assignee: Alcoa Corp
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Filing: 1978-08-08
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Granted: 1981-01-06
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Expires: 1998-08-08
Abstract
Abstract A synthetic metal working lubricant characterized by an absence of mineral oil and dispersible in water comprises an alkanolamine such as triethanolamine, a 12 to 18 carbon aliphatic acid, such as oleic acid, and a water-dispersible or miscible polyoxyalkylene alcohol. The lubricant may optionally also contain an aliphatic carboxylic acid ester or diester. The resulting lubricant can be disposed of in accordance with existing EPA regulations on amounts of effluent extractable with hexane in comparison with prior art mineral oil based lubricants.
Inventors
- 👤 James E. Knepp
- 👤 William G. Johnston
- 👤 Myron J. Jursich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:11
CPC Classifications
C; C10; C10M; C10M173/00; C10M173/02; C10M2201/00; C10M2201/02; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; 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: 5
Claim 1
Independent Claim
70 words
A synthetic lubricant for metal working dispersible or miscible in water comprising: (a) 5 to 15 parts by weight triethanolamine; (b) 5 to 15 parts by weight 16 to 18 carbon atom aliphatic acid; (c) 10 to 55 parts by weight polyoxyalkylene alcohol and dihydric alcohols; (d) an aliphatic carboxylic acid ester in amount not more than 20 parts by weight; and (e) 10 to 35 parts by weight water.
Claim 2
Dependent Claim
70 words
A synthetic lubricant for metal working dispersible or miscible in water comprising: (a) 5 to 15 parts by weight triethanolamine; (b) 5 to 15 parts by weight 16 to 18 carbon atom aliphatic acid; (c) 10 to 55 parts by weight polyoxyalkylene alcohol and dihydric alcohols; (d) an aliphatic carboxylic acid ester in amount not more than 20 parts by weight; and (e) 10 to 35 parts by weight water.
Claim 3
Dependent Claim
73 words
A synthetic metal working lubricant characterized by an absence of mineral oil and dispersible or miscible in water which comprises: (a) 5 to 15 parts by weight alkanolamine; (b) 5 to 15 parts by weight 12 to 18 carbon atom aliphatic acid; (c) 10 to 55 parts by weight polyoxyalkylene alcohol; (d) 10 to 35 parts by weight water; and (e) 10 to 20 parts by weight of an aliphatic carboxylic acid ester.
Claim 4
Dependent Claim
73 words
A synthetic metal working lubricant characterized by an absence of mineral oil and dispersible or miscible in water which comprises: (a) 5 to 15 parts by weight alkanolamine; (b) 5 to 15 parts by weight 12 to 18 carbon atom aliphatic acid; (c) 10 to 55 parts by weight polyoxyalkylene alcohol; (d) 10 to 35 parts by weight water; and (e) 10 to 20 parts by weight of an aliphatic carboxylic acid ester.
Claim 5
Dependent Claim
26 words
The lubricant of claim 1 wherein further water is added to provide an additional 8 to 9 parts by weight water per part by weight lubricant.
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) | 1984-01-06 | 1984-07-07 | 1985-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-06 | 1988-07-07 | 1989-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-06 | 1992-07-07 | 1993-01-06 | $7700.00 | Window Closed / Lapsed |