Hydrocarbyl amine additives for distillate fuels
AssigneeChevron Research Company
InventorLewis R. Honnen
Life of this patent
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Abstract
A mixture of high and low molecular weight hydrocarbyl amines exhibit excellent detergency and dispersancy at low concentrations in fuels. The high molecular weight hydrocarbyl amine contains at least one hydrocarbyl group having a molecular weight from about 1,900 to 5,000 and the low molecular weight hydrocarbyl amine contains at least one hydrocarbyl group having a molecular weight from about 300 to 600. The weight ratio of low molecular weight amine to high molecular weight amine in the mixture is maintained between about 0.5 and 5:1.
Claims16
A composition of matter comprising a mixture of a high molecular weight hydrocarbyl amines and a low molecular weight hydrocarbyl amines wherein a weight ratio of low to high molecular weight amines present within said mixture is between about 0.5 and 5:1;
- said high molecular weight hydrocarbyl amines being prepared by reacting a first hydrocarbyl halide having a number average molecular weight in the hydrocarbyl portion of 1,900 to 5,000 with a mono- or polyamine having from 1 to 10 amine nitrogens and from 2 to 40 carbons with a carbon to nitrogen atomic ratio between about 1 and 10:1;
- and said low molecular weight hydrocarbyl amines being prepared by reacting a second hydrocarbyl halide having a number average molecular weight in said second hydrocarbyl portion of 300 to 600 with a mono- or polyamine having from 1 to 10 amine nitrogens and from 2 to 40 carbons with a carbon to nitrogen atomic ratio between about 1 and 10:1.
A composition of matter comprising a mixture of high and low molecular weight hydrocarbyl amines wherein said hydrocarbyl amines are prepared by reacting a high molecular weight hydrocarbyl halide having a number average molecular weight in the hydrocarbyl portion of 2,500 to 4,400 and a low molecular weight hydrocarbyl halide having a number average molecular weight in the hydrocarbyl portion of 300 to 550 with the same or a different amine having the following general structural formula:
- ##EQU4## wherein R is the same or different constituent selected from hydrogen, hydrocarbyl or the mono-keto, mono-nitro, mono-hydroxy, alkyleneoxy or alkoxy derivative thereof, and at least one of said R groups in said amine is hydrogen;
- R1 is the same or different alkylene or hydroxy substituted alkylene having from 2 to 6 carbons;
- a' is an integer from 0 to 1;
- b' is an integer from 0 to 4;
- c' is an integer from 0 to 1;
- d' is an integer from 0 to 1;
- e' is an integer from 0 to 1;
- f' is an integer from 0 to 1 and equal to 1 when
- c' is 0. said low molecular weight hydrocarbyl amines are present in said mixture in an amount from 0.5 to 5 parts by weight per weight part of said high molecular weight hydrocarbyl amines.
A concentrate comprising an inert stable oleophilic organic solvent containing from 10 to 70 weight percent of a mixture of high and low molecular weight hydrocarbyl amines prepared by reacting a high molecular weight hydrocarbyl halide having a number average molecular weight in the hydrocarbyl portion of 1,900 to 5,000 and a low molecular weight hydrocarbyl halide having a number average molecular weight in the hydrocarbyl portion of 300 to 600 with the same or a different amine having the following general structural formula:
- ##EQU5## wherein R is the same or different constituent selected from hydrogen, hydrocarbyl or hydrocarboyl having from 1 to 10 carbons or the mono-keto, mono-nitro, mono-hydroxy, alkyleneoxy or alkoxy derivative thereof, and at least one of said R groups in said amine is hydrogen;
- R1 is the same or different alkylene or hydroxy substituted alkylene having from 2 to 6 carbons;
- a' is an integer from 0 to 1;
- b' is an integer from 0 to 4;
- c' is an integer from 0 to 1;
- d' is an integer from 0 to 1;
- e' is an integer from 0 to 1;
- f' is an integer from 0 to 1 and equal to 1 when c' is 0,
- said low molecular weight hydrocarbyl amine is present in said mixture in an amount from 0.5 to 5 parts by weight per weight part of said high molecular weight hydrocarbyl amine.
A composition of matter comprising a mixture of high and low molecular weight hydrocarbyl mono- or polyamines;
- said high molecular weight hydrocarbyl amine containing at least one hydrocarbyl group having a molecular weight from 1,900 to 5,000 and said low molecular weight hydrocarbyl amine containing at least one hydrocarbyl group having a molecular weight from 300 to 600;
- the weight ratio of said low molecular weight hydrocarbyl amine to said high molecular weight hydrocarbyl amine being between about 0.5 and 5:1.
Dependencies are inferred from the claim text.