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US 10,604,718 B2Granted
Lubricant composition and use
AssigneeFuchs Petrolub SE
InventorsAchim Losch, Agnes Fundus
Life of this patent
Estimating the term…
Abstract
The present invention provides a lubricant composition which can be washed off cold and the use thereof for application to a metal strip as anti-corrosion, wash and/or forming lubricant. The composition is 50 to 90 wt % base fluid, 3 to 15 wt % sulfonate-based corrosion inhibitor, 1 to 20 wt % ester component, 0.5 to 3 wt % phosphorus source component or 1 to 10 wt % sulfur source component as high-pressure/anti-wear additive, 1 to 15 wt % emulsifier, 0.05 to 1 wt % carboxylic acid component, 0.05 to 1 wt % aminic and/or phenolic antioxidant, 0.5 to 5 wt % wax and/or thickener component, based in each case on the total weight of the composition. Further disclosed is a dry lubricant composition which can be washed off cold.
Claims28
A lubricant composition that can be washed off cold for application on a metal strip as a corrosion protection, washing and/or forming lubricant, the lubricant composition comprising:
- 50 wt % to 90 wt % base fluid, relative to the total weight of the lubricant composition, wherein the base fluid is a mixture of at least two base oils differing in their kinematic viscosity at 40° C., wherein the at least two base oils are selected from group I base oils and group II base oils with a kinematic viscosity at 40° C. of 3 mm2/s to 700 mm2/s, wherein group III base oils and group IV base oils are not excluded;
- 3 wt % to 15 wt % sulfonate-based corrosion inhibitor, relative to the total weight of the lubricant composition;
- 1 wt % to 20 wt % ester component, relative to the total weight of the lubricant composition;
- 0.5 wt % to 3 wt % phosphorus carrier component, relative to the total weight of the lubricant composition, or 1 wt % to 10 wt % sulfur carrier component, relative to the total weight of the lubricant composition, as an extreme-pressure/anti-wear additive, wherein:
- the phosphorus carrier component is selected from the group consisting of dialkyl hydrogenphosphite, wherein each alkyl residue of the dialkyl hydrogenphosphite is saturated or unsaturated and comprises 14 to 22 C atoms;
- oleyl alcohol ethoxylate phosphate;
- dimethyl octadecenyl phosphonate;
- and triaryl thiophosphate;
- and
- the sulfur carrier component is selected from the group consisting of sulfurized hydrocarbon, sulfur-polymer from lard oil, overbased Na thiophosphonate, S ester, S ester of oleic acid methylester, aminodialkyl dithiophosphate, and ethylhexyl Zn dithiophosphate;
- 1 wt % to 15 wt % emulsifier, relative to the total weight of the lubricant composition, wherein the emulsifier is selected from non-ionic surfactants, anionic surfactants, or a mixture of non-ionic surfactants and/or anionic surfactants;
- 0.05 wt % to 1 wt % carboxylic acid component, relative to the total weight of the lubricant composition, wherein the carboxylic acid component is selected from the group consisting of carboxylic acids with 16 to 22 C atoms;
- dimer acids that are dicarboxylic acids produced by dimerization of unsaturated fatty acids of tall oil;
- and mixtures thereof;
- 0.05 wt % to 1 wt % antioxidant, relative to the total weight of the lubricant composition, wherein the antioxidant is selected from the group consisting of aminic antioxidant;
- phenolic antioxidant;
- and a mixture of aminic antioxidant and phenolic antioxidant;
- 0.5 wt % to 5 wt % wax and/or thickener component, relative to the total weight of the lubricant composition, wherein the wax and/or the thickener component is selected from the group consisting of paraffinic waxes;
- castor oil derivatives;
- fatty acid derivatives that are fatty acid esters or fatty acid amides of saturated and unsaturated C16-20 fatty acids;
- and polymeric thickeners.
18 more elements
A dry lubricant composition that can be washed off cold for application on a metal strip as corrosion protection lubricant or pre-lube, the lubricant composition comprising:
- wt % to 90 wt % wax component, relative to the total weight of the lubricant composition, wherein the wax component has a melting range of 35° C. to 75° C. and is selected from the group consisting of polyalkylene glycol, polyalkylene glycol ester, ester, ester ethoxylate, a carboxylic acid ethoxylate, ether carboxylic acid and alkaline and alkaline earth soaps thereof, glycerin fatty acid ester, polyol esters and ethoxylates thereof, sorbitol esters and ethoxylates thereof, alcohols and ethoxylates thereof, fatty alcohols and ethoxylates thereof, paraffinic waxes, castor oil derivatives, fatty acid derivatives selected from fatty acid esters or fatty acid amides of saturated and unsaturated C 16-20 fatty acids;
- 3 wt % to 15 wt % sulfonate-based corrosion inhibitor, relative to the total weight of the lubricant composition;
- 0.05 wt % to 1.7 wt % of at least one further inhibitor component, relative to the total weight of the lubricant composition, wherein the at least one further inhibitor component selected from the group consisting of triazoles, benzotriazole, benzotriazole derivatives, and amines;
- 0.5 wt % to 3 wt % phosphorus carrier component, relative to the total weight of the lubricant composition, or 1 to 10 wt % sulfur carrier component, relative to the total weight of the lubricant composition, as an extreme-pressure/anti-wear additive, wherein:
- the phosphorus carrier component is selected from the group consisting of dialkyl hydrogenphosphite, wherein each alkyl residue of the dialkyl hydrogenphosphite is saturated or unsaturated and comprises 14 to 22 C atoms;
- oleyl alcohol ethoxylate phosphate;
- dimethyl octadecenyl phosphonate;
- and triaryl thiophosphate;
- and
- the sulfur carrier component is selected from the group consisting of sulfurized hydrocarbon, sulfur-polymer from lard oil, overbased Na thiophosphonate, S ester, S ester of oleic acid methylester, aminodialkyl dithiophosphate, ethylhexyl Zn dithiophosphate;
- 0 wt % to 15 wt % emulsifier, relative to the total weight of the lubricant composition, the emulsifier selected from non-ionic surfactants or anionic surfactants or a mixture of non-ionic surfactants and/or anionic surfactants, wherein the emulsifier can be omitted when the wax component comprises a sorbitan ester ethoxylate selected from sorbitan tristearate ethoxylate and sorbitan monostearate ethoxylate;
- 0.05 wt % to 1 wt % carboxylic acid component, relative to the total weight of the lubricant composition, the carboxylic acid component selected from the group consisting of carboxylic acids with 16 to 22 C atoms;
- dimer acids that are dicarboxylic acids produced by dimerization of unsaturated fatty acids from tall oil;
- or mixtures thereof;
- 0.05 wt % to 1 wt % antioxidant, relative to the total weight of the lubricant composition, wherein the antioxidant is selected from the group consisting of aminic antioxidant;
- phenolic antioxidant;
- and a mixture of aminic antioxidant and phenolic antioxidant;
- wherein the lubricant composition, depending on the proportion of the wax component, comprises a base fluid as a supplement to a total of 100 wt % of the lubricant composition, wherein the base fluid is a mixture of at least two base oils differing in their kinematic viscosity at 40° C., wherein the at least two base oils are selected from group I base oils and group II base oils with a kinematic viscosity at 40° C. of 3 mm2/s to 700 mm2/s, wherein group III base oils and group IV base oils are not excluded.
15 more elements
Dependencies are inferred from the claim text.