Back to results
US 4,292,187 AGranted
Lubricating oils for the working of metals
AssigneeBayer Aktiengesellschaft
InventorsKarl-Heinz Hentschel, Rolf Dhein, Wolfgang Schule
Life of this patent
Estimating the term…
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.
Claims7
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.sub.6 -C.sub.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.sub.6 -C.sub.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.
4 more elements
Dependencies are inferred from the claim text.