Oil soluble dispersant additives modified with monoepoxy monounsaturated compounds
AssigneeExxon Chemical Patents Inc.
InventorsJacob Emert, Antonio Gutierrez, Robert D. Lundberg
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Abstract
An oil soluble dispersant comprising the reaction products of: (1) at least one of (i) oil soluble salts, amides, imides, oxazolines, esters, or mixtures thereof of long chain hydrocarbyl substituted mono- and dicarboxylic acids or their anhydrides or esters, (ii) long chain hydrocarbon having a polyamine attached directly thereto, and (iii) long chain hydrocarbyl-substituted Mannich condensation products containing at least one reactive group selected from reactive amino groups and reactive hydroxyl groups; and (2) at least one monoepoxide monounsaturated linking reactant.
Claims33
An adduct useful as a dispersant additive to oleaginous compositions comprising cross-linked or chain-coupled reaction products of:
- (1) at least one nitrogen-containing ashless dispersant which comprises an imide-containing reaction product of long chain hydrocarbyl polymer substituted with at least one monounsaturated mono- or dicarboxylic-acid-producing moiety;
- and
- (2) at least one monoepoxide monounsaturated linking reactant comprising at least one compound of the formula ##STR70## wherein i is 0 to 1;
- wherein R.sup.1, R.sup.2, R.sup.3, R.sup.5 and R.sup.6 are the same or different and are H, unsubstituted hydrocarbyl or substituted hydrocarbyl with the proviso that the reactivity of any chosen substituent group with the oxirane moieties of said linking reactant is less than or equal to the reactivity of said oxirane moieties with the nitrogen atoms of said nitrogen-containing ashless dispersant during said cross-linking reaction;
- wherein Z.sup.1 is substituted or unsubstituted divalent hydrocarbon radical;
- and R.sup.4 comprises H, Z.sup.4 H or an electron withdrawing moiety wherein Z.sup.4 is substituted or unsubstituted divalent hydrocarbyl radical.
An adduct useful as a dispersant additive to oleaginous compositions, said dispersant adduct having been prepared by:
- (1) preparing a coupled adduct formed by reaction of at least one polyamine and at least one monoepoxide monounsaturated linking reactant having the formula:
- ##STR72## wherein i is 0 or 1;
- j is 1;
- R.sup.1, R.sup.2, R.sup.3, R.sup.5 and R.sup.6 are the same or different and are H or unsubstituted hydrocarbyl or substituted hydrocarbyl with the proviso that the reactivity of any chosen substituent group with the oxirane moieties of said linking reactant is less than or equal to the reactivity of said oxirane moieties with the nitrogen atoms of said nitrogen-containing ashless dispersant during said preparation;
- X.sup.1 is 0;
- Z.sup.1 is alkylene of from 1 to 4 carbon atoms, Z.sup.2 comprises ##STR73## R.sup.4 comprises H, --Z.sup.4 H or an electron withdrawing moiety;
- an Z.sup.4 is substituted or unsubstituted divalent hydrocarbon radical;
- and
- (2) reacting said coupled adduct with at least one long-chain hydrocarbyl polymer substituted reactant selected from the group consisting of long chain hydrocarbyl polymer substituted mono- and dicarboxylic acids or their anhydrides or esters.
Dependencies are inferred from the claim text.