US4292187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oils for the working of metals
Assignee: Bayer AG
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Filing: 1980-03-06
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Granted: 1981-09-29
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Expires: 2000-03-06
Abstract
Abstract A condensation product from aliphatic or cycloaliphatic polyols, aliphatic saturated or once unsaturated hydroxycarboxylic acids and aliphatic or cycloaliphatic saturated or unsaturated monocarboxylic acids is an effective lubricant for the working of metals, optionally in admixture with other lubricating oils and conventional additives.
Inventors
- 👤 Karl-Heinz Hentschel
- 👤 Rolf Dhein
- 👤 Wolfgang Schule
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:36
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/06; C10; C10M; C10M107/00; C10M107/20; C10M107/30; C10M145/00; C10M145/18; C10M145/22; C10M173/00; C10M173/02; C11; C11C; C11C3/00; C11C3/003; C11C3/02; C10M2201/00; C10M2201/02; C10M2209/00; C10M2209/10; C10M2209/102; C10M2209/11; 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: 8
Claim 1
Independent Claim
168 words
A condensation product produced from (A) from 5 to 25% by weight of at least one aliphatic or cycloaliphatic polyol containing from 2 to 60 carbon atoms and from 2 to 8 alcoholic hydroxyl groups per molecule, (B) from 5 to 40% by weight of at least one aliphatic saturated or once unsaturated C 6 -C 22 -hydroxycarboxylic acid or a lactone thereof and/or an oligomeric condensation product thereof with an average degree of oligomerisation of from 2 to 50 and an average molecular weight of from 210 to 12,000, and (C) from 35 to 90% by weight of at least one saturated or unsaturated, straight-chained or slightly branched, aliphatic or cycloaliphatic C 6 -C 24 -monocarboxylic acid, wherein the sum of the components (A) to (C) is 100% by weight and the condensation product has (1) an acid number of from 0.01 to 30 mg KOH/g, (2) a hydroxyl number of from 0.01 to 60 mg KOH/g, and (3) an iodine number of from 30 to 100.
Claim 2
Dependent Claim
168 words
A condensation product produced from (A) from 5 to 25% by weight of at least one aliphatic or cycloaliphatic polyol containing from 2 to 60 carbon atoms and from 2 to 8 alcoholic hydroxyl groups per molecule, (B) from 5 to 40% by weight of at least one aliphatic saturated or once unsaturated C 6 -C 22 -hydroxycarboxylic acid or a lactone thereof and/or an oligomeric condensation product thereof with an average degree of oligomerisation of from 2 to 50 and an average molecular weight of from 210 to 12,000, and (C) from 35 to 90% by weight of at least one saturated or unsaturated, straight-chained or slightly branched, aliphatic or cycloaliphatic C 6 -C 24 -monocarboxylic acid, wherein the sum of the components (A) to (C) is 100% by weight and the condensation product has (1) an acid number of from 0.01 to 30 mg KOH/g, (2) a hydroxyl number of from 0.01 to 60 mg KOH/g, and (3) an iodine number of from 30 to 100.
Claim 3
Dependent Claim
55 words
A condensation product according to claim 1, produced from (A) from 8 to 18% by weight of the polyol, (B) from 15 to 35% by weight of the C 6 -C 22 -hydroxycarboxylic acid and/or the oligomerisation product thereof, and (C) from 47 to 77% by weight of the C 6 -C 24 -monocarboxylic acid.
Claim 4
Dependent Claim
29 words
A condensation product according to claim 1 or 2, wherein the polyol contains from 2 to 20 carbon atoms and from 2 to 6 alcoholic hydroxyl groups per molecule.
Claim 5
Dependent Claim
19 words
A condensation product according to any one of claims 1 to 3, wherein the hydroxycarboxylic acid is ricinoleic acid.
Claim 6
Dependent Claim
44 words
A condensation product according to any one of claims 1 to 4, wherein component (B) is an oligomerisation product of a hydroxycarboxylic acid having an average degree of oligomerisation of from 2 to 20 and an average molecular weight of from 210 to 5,000.
Claim 7
Dependent Claim
40 words
A lubricant for the working of metal, comprising a condensation product according to any one of claims 1 to 5 alone or in a mixture with at least one other lubricating oil, and optionally with at least one conventional additive.
Claim 8
Dependent Claim
33 words
A cooling lubricant for the non-cutting working of a metal comprising a condensation product or a lubricant according to any one of claims 1 to 5 in the form of an oil-in-water emulsion.
References Cited (Backward Citations)
US4031019A
Cited
US4191658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-09-28 | 1985-03-30 | 1985-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-28 | 1989-03-30 | 1989-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-28 | 1993-03-30 | 1993-09-29 | $7700.00 | Window Closed / Lapsed |