Polyetheramine salts and their use as corrosion inhibitors and friction reducers
AssigneeHuntsman Petrochemical Corporation
InventorHaibo Zhao
Life of this patent
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Abstract
The present disclosure generally relates to a fuel additive composition for use in reducing corrosion and wear in an internal combustion engine or fuel component part thereof. The fuel additive composition includes a polyetheramine salt obtained by either (a) mixing a polyoxyalkylene monoamine and at least one of a dicarboxylic acid or a tricarboxylic acid or (b) mixing a polyoxyalkylene polyamine and at least one of a monocarboxylic acid, the dicarboxylic acid, or the tricarboxylic acid.
Claims10
A fuel additive composition for reducing corrosion and increasing lubricity in hydrocarbonaceous compositions in contact with a fuel system component part or internal combustion engine comprising a polyetheramine salt obtained by either:
- (a) mixing a polyoxyalkylene monoamine and at least one of a dicarboxylic acid or a tricarboxylic acid;
- wherein the polyoxyalkylene monoamine is a compound having a general formula:
- where Z is a C1-C40 alkyl phenol group;
- each Z′ is independently hydrogen, methyl, or ethyl;
- and e is an integer from about 1 to about 50;
- and
- wherein the dicarboxylic acid comprises maleic acid, tartaric acid, succinic acid, glutaric acid, adipic acid, sebacic acid, phthalic acid, isophthalic acid, terephthalic acid, or a mixture thereof;
- and wherein the tricarboxylic acid comprises trimellitic acid, citric acid, isocitric acid, agaicic acid, or a mixture thereof.
A method for preventing corrosion and wear reduction of a metal, plastic or synthetic part or surface of a fuel system component or internal combustion engine comprising:
- combining an effective amount of a fuel additive composition comprising a polyetheramine salt obtained by either:
- (a) mixing a polyoxyalkylene monoamine and at least one of a dicarboxylic acid or a tricarboxylic acid;
- wherein the polyoxyalkylene monoamine is a compound having a general formula:
- where Z is a C1-C40 alkyl phenol group;
- each Z′ is independently hydrogen, methyl, or ethyl;
- and e is an integer from about 1 to about 50;
- and
- wherein the dicarboxylic acid comprises maleic acid, tartaric acid, succinic acid, glutaric acid, adipic acid, sebacic acid, phthalic acid, isophthalic acid, terephthalic acid, or a mixture thereof;
- and wherein the tricarboxylic acid comprises trimellitic acid, citric acid, isocitric acid, agaicic acid, or a mixture thereof;
- and
- contacting the metal, plastic or synthetic part or surface with the fuel composition during operation of the engine.
Dependencies are inferred from the claim text.