Stabilizing additive for the prevention of oxidation and peroxide formation

A method of treating liquid hydrocarbons comprising introducing a liquid hydrocarbon stabilizer into a liquid hydrocarbon selected from distillate fuels, kerosene and solvents, the liquid hydrocarbon stabilizer comprising:

• a hindered phenol in an amount in the range of from about 5 to about 50 mg/l, the hindered phenol having a general formula
• where R1, R2, and R3 are the same or different and are each alkyl, aryl, alkylaryl, arylalkyl, hydroxyalkyl, hydroxyaryl, hydroxyalkylaryl, hydroxyarylalkyl groups, or heteroatomic alkyl, aryl, alkylaryl, arylalkyl, hydroxyalkyl, hydroxyaryl, hydroxyalkylaryl, hydroxyarylalkyl groups containing nitrogen, sulfur, or oxygen and where at least one of R1 and R2 provide stearic hindrance;
• and
• a peroxide decomposer in an amount of from about 20 to about 250 mg/l, the peroxide decomposer having a general formula PR6R7R8 where R6, R7, and R8 are the same or different and are each alkyl, aryl, alkylaryl, arylalkyl, hydroxyalkyl, hydroxyaryl, hydroxyalkylaryl, hydroxyarylalkyl groups, or heteroatomic alkyl, aryl, alkylaryl, arylalkyl, hydroxyalkyl, hydroxyaryl, hydroxyalkylaryl, hydroxyarylalkyl groups containing nitrogen, sulfur, or oxygen.

A composition comprising:

• a liquid hydrocarbon selected from distillate fuels, kerosene and solvents;
• and
• a liquid hydrocarbon stabilizer comprising:
• a hindered phenol in an amount in the range of from about 5 to about 50 mg/l, the hindered phenol having a general formula
• where R1, R2, and R3 are the same or different and are each alkyl, aryl, alkylaryl, arylalkyl, hydroxyalkyl, hydroxyaryl, hydroxyalkylaryl, hydroxyarylalkyl groups, or heteroatomic alkyl, aryl, alkylaryl, arylalkyl, hydroxyalkyl, hydroxyaryl, hydroxyalkylaryl, hydroxyarylalkyl groups containing nitrogen, sulfur, or oxygen and where at least one of R1 and R2 provide stearic hindrance;
• and
• a peroxide decomposer in an amount less than about 10 g/l, the peroxide decomposer having a general formula R4—S—R5, where R4 and R5 are the same or different and are each alkyl, aryl, alkylaryl, arylalkyl, hydroxyalkyl, hydroxyaryl, hydroxyalkylaryl, hydroxyarylalkyl groups, or heteroatomic alkyl, aryl, alkylaryl, arylalkyl, hydroxyalkyl, hydroxyaryl, hydroxyalkylaryl, hydroxyarylalkyl groups containing nitrogen, sulfur, or oxygen.

A method of treating liquid hydrocarbons comprising introducing a liquid hydrocarbon stabilizer into a liquid hydrocarbon selected from distillate fuels, kerosene and solvents, the liquid hydrocarbon stabilizer comprising:

• a hindered phenol in an amount in the range of from about 5 to about 50 mg/l, the hindered phenol having a general formula
• where R1, R2, and R3 are the same or different and are each alkyl, aryl, alkylaryl, arylalkyl, hydroxyalkyl, hydroxyaryl, hydroxyalkylaryl, hydroxyarylalkyl groups, or heteroatomic alkyl, aryl, alkylaryl, arylalkyl, hydroxyalkyl, hydroxyaryl, hydroxyalkylaryl, hydroxyarylalkyl groups containing nitrogen, sulfur, or oxygen and where at least one of R1 and R2 provide stearic hindrance;
• and
• a peroxide decomposer in an amount less than about 10 g/l, the peroxide decomposer having a general formula R4—S—R5 where R4 and R5 are the same or different and are each alkyl, aryl, alkylaryl, arylalkyl, hydroxyalkyl, hydroxyaryl, hydroxyalkylaryl, hydroxyarylalkyl groups, or heteroatomic alkyl, aryl, alkylaryl, arylalkyl, hydroxyalkyl, hydroxyaryl, hydroxyalkylaryl, hydroxyarylalkyl groups containing nitrogen, sulfur, or oxygen.