Dispersant additives derived from amido-amines
AssigneeExxon Chemical Patents Inc.
InventorsAntonio Gutierrez, Robert D. Lundberg
Life of this patent
Estimating the term…
Abstract
The present invention is directed to a dispersant additive comprising at least one adduct of (A) a polyolefin of 300 to 10,000 number average molecular weight substituted with at least 0.3 (e.g., from about 1 to 4) dicarboxylic acid producing moieties (preferably acid or anhydride moieties) per polyolefin molecule, (B) an amido-amine or thioamido-amine characterized by being a reaction product of at least a polyamine and an alpha, beta-unsaturated compound of the formula: ##STR1## wherein X is sulfur or oxygen, Y is --OR.sup.4, --SR.sup.4, or --NR.sup.4 (R.sup.5), and R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are the same or different and are hydrogen or substituted or unsubstituted hydrocarbyl.
Claims39
An oil soluble dispersant mixture useful as an oil additive comprising an adduct of:
- (A) a long chain hydrocarbyl substituted C.sub.4 to C.sub.10 monounsaturated dicarboxylic acid producing material formed by reacting an olefin polymer of C.sub.2 to C.sub.10 monoolefin having a number average molecular weight of about 300 to 10,000 and a C.sub.4 to C.sub.10 monounsaturated acid material, said acid producing material having an average of at least about 0.8 dicarboxylic acid producing moieties, per molecule of said olefin polymer present in the reaction mixture used to form said acid producing material;
- and
- (B) an amido-amine or a thioamido-amine by being a reaction product of at least a polyamine and an alpha, beta-unsaturated compound of the formula:
- ##STR23## wherein X is sulfur or oxygen, Y is --OR.sup.4, --SR.sup.4, or --NR.sup.4 (R.sup.5), and R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are the same or different and are hydrogen or substituted or unsubstituted hydrocarbyl.
A process for producing a dispersant mixture useful as an oil additive which comprises:
- (a) providing a hydrocarbyl substituted C.sub.4 to C.sub.10 monoolefin having a number average molecular weight of about 700 to 10,000 and a C.sub.4 to C.sub.10 monounsaturated acid material, said acid producing material having an average of at least about 0.8 dicarboxylic acid producing moieties, per molecule of said olefin polymer present in the reaction mixture used to form said acid producing material;
- (b) providing an amido-amine compound having at least one primary amino group prepared by reacting at least one polyamine with at least one alpha, beta-unsaturated compound of the formula:
- ##STR24## wherein X is sulfur or oxygen, Y is --OR.sup.4, --SR.sup.4, or --NR.sup.4 (R.sup.5), and R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are the same or different and are hydrogen or substituted or unsubstituted hydrocarbyl;
- and
- (c) contacting the said acid producing material with said amido-amine compound under conditions sufficient to effect reaction of at least a ortion of the primary amino groups on said amido-amine compound with at least a portion of the acid-producing groups in said acid producing material, to form said dispersant mixture.
A process for producing a dispersant useful as an oil additive which comprises:
- (a) providing a hydrocarbyl substituted C.sub.4 to C.sub.10 monoolefin having a number average molecular weight of about 700 to 10,000 and a C.sub.4 to C.sub.10 monounsaturated acid material, said acid producing material having an average of at least about 0.8 dicarboxylic acid producing moieties, per molecule of said olefin polymer present in the reaction mixture used to form said acid producing material;
- (b) providing an amido-amine compound having at least one primary amino group prepared by reacting at least one polyamine with at least one alpha, beta-unsaturated compound of the formula:
- ##STR25## wherein Y is --OR.sup.4, --SR.sup.4, or --NR.sup.4 (R.sup.5), and R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are the same or different and are hydrogen or substituted or unsubstituted hydrocarbyl;
- and
- (c) contacting the said acid producing material with said amido-amine compound under conditions sufficient to effect reaction of at least a portion of the primary amino groups on said amido-amine compound with at least a portion of the acid-producing groups in said acid producing material, to form said dispersant.
Dependencies are inferred from the claim text.