Demulsifier additive compositions for lubricants and fuels and concentrates containing the same
AssigneeThe Lubrizol Corporation
InventorEdward J. Friihauf
Life of this patent
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Abstract
Lubricant and fuel compositions characterized by improved demulsifying properties are disclosed, which properties are contributed substantially by an additive comprising a mixture of: (A) One or more reaction products of a hydrocarbon-substituted succinic acid or anhydride with one or more polyalkylene glycols or monoethers thereof, (B) One or more organic basic metal salts, and (C) one or more alkoxylated amines.
Claims33
A lubricant composition comprising a major proportion of a lubricating oil and a minor proportion of at least one demulsifier additive comprising the mixture of:
- (A) one or more reaction products of a hydrocarbon-substituted succinic acid or anhydride with one or more polyalkylene glycols or mono-ethers thereof, wherein said hydrocarbon substituent is an alkyl or alkenyl radical having from 4 to about 50 carbon atoms,
- (B) one or more organic basic metal salts, and
- (C) one or more alkoxylated amines.
A lubricant composition comprising a major proportion of a lubricating oil and a minor proportion of at least one demulsifier additive comprising the mixture of:
- (A) one or more reaction products of a hydrocarbon-substituted succinic acid or anhydride with one or more polyethylene glycols or mono-ethers thereof, wherein said hydrocarbon substituent is an alkyl or alkenyl radical having 6 to about 30 carbon atoms,
- (B) one or more organic basic alkaline earth metal salts, and
- (C) one or more amines characterized by having at least one group of the formula --NR.sub.1 R.sub.2 wherein R.sub.1 is --O-alkylene).sub.n OH wherein alkylene contains up to 6 carbon atoms, and n is a number of 1 to about 10, R.sub.2 is selected from hydrogen, alkyl of up to about 18 carbon atoms, and R.sub.1.
In an automatic transmission fluid having a major proportion of lubricating oil and minor proportion of one or more additives including seal swellers, viscosity modifiers, dispersants, detergents, extreme pressure agents and anti-wear agents, anti-rust agents and corrosion inhibitors, the improvement which comprises incorporating into said fluid at least one demulsifier additive comprising the mixture of:
- (A) one or more reaction products of a hydrocarbon-substituted succinic acid or anhydride with one or more polyalkylene glycols or mono-ethers thereof, wherein the hydrocarbon substituent on said acid or anhydride is an alkyl or alkenyl radical having about 6 to about 30 carbon atoms, and said polyalkylene glycols have an average molecular weight of about 200 to 1500,
- (B) one or more organic basic alkaline earth metal salts, and
- (C) one or more amines characterized by having at least one group of the formula --NR.sub.1 R.sub.2 wherein R.sub.1 is --O-alkylene).sub.n OH wherein alkylene contains up to 6 carbon atoms, and n is a number of 1 to about 10, and R.sub.2 is selected from hydrogen, alkyl of up to about 18 carbon atoms, and R.sub.1.
A concentrate suitable for imparting demulsifying properties to normally liquid fuels and lubricating compositions which comprises a normally liquid, substantially inert diluent, and from about 2 to about 50% by weight of at least one additive comprising the mixture of:
- (A) one or more reaction products of a hydrocarbon-substituted succinic acid or anhydride with one or more polyalkylene glycols or mono-ethers thereof, wherein said hydrocarbon substituent is an alkyl or alkenyl radical having from 4 to about 50 carbon atoms,
- (B) one or more organic basic metal salts, and
- (C) one or more alkoxylated amines.
A method of preparing a demulsified normally liquid fuel or lubricant composition having a major proportion of a normally liquid fuel or lubricating oil, which comprises incorporating into said fuel or lubricating oil a minor proportion of at least one additive comprising the mixture of:
- (A) one or more reaction products of a hydrocarbon-substituted succinic acid or anhydride with one or more polyalkylene glycols or mono-ethers thereof, wherein said hydrocarbon substituent is an alkyl or alkenyl radical having from 4 to about 50 carbon atoms,
- (B) one or more organic basic metal salts, and
- (C) one or more alkoxylated amines.
A fuel composition having demulsified properties resulting from the incorporation of 1 to 200 parts per million based on the fuel of a demulsifier additive comprising the mixture of:
- (A) one or more reaction products of a hydrocarbon-substituted succinic acid or anhydride with one or more polyalkylene glycols or mono-ethers thereof, wherein said hydrocarbon substituent is an alkyl or alkenyl radical having from 4 to about 50 carbon atoms,
- (B) one or more organic basic metal salts, and
- (C) one or more alkoxylated amines.
Dependencies are inferred from the claim text.