Dispersants prepared from high polydispersity olefin polymers
AssigneeThe Lubrizol Corporation
InventorsJohn R. Johnson, James D. Burrington, Christopher J. Kolp, John K. Pudelski, Jeffry G. Dietz, Gregory R. McCullough, Charles K. Baumanis, Carlos L. Cerda de Groote
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Abstract
A dispersant is prepared from an amine and a hydrocarbyl-substituted acylating agent, wherein the hydrocarbyl substituent is a polymerized olefin having a polydispersity {overscore (M)}w/{overscore (M)}n of greater than 5. Such polyolefin substituents are prepared by polymerization of olefins in the presence of a calcined catalyst comprising a partially or fully neutralized ammonium salt of a heteropolyacid.
Claims39
A dispersant comprising the reaction product of an amine, an alcohol, or mixtures thereof, and a hydrocarbyl-substituted acylating agent, wherein the hydrocarbyl substituent comprises at least one polymerized olefin, the resulting polyolefin having {overscore (M)}w/{overscore (M)}n of greater than 5.
A dispersant comprising the reaction product of an amine, an alcohol, or mixtures thereof, and a hydrocarbyl-substituted acylating agent, wherein the hydrocarbyl substituent comprises at least one polymerized olefin which has been prepared by contacting (a) at least one C2-C30 olefin or polymerizable derivatives thereof with (b) a catalyst comprising a partially or fully neutralized salt of a heteropolyacid, wherein said catalyst has been calcined.
A hydrocarbyl-substituted acylating agent, wherein the hydrocarbyl group is a polyolefin having {overscore (M)}w/{overscore (M)}n of greater than 5.
A method for preparing a dispersant, comprising reacting a hydrocarbyl-substituted acylating agent with an amine, an alcohol, or mixtures thereof, wherein the hydrocarbyl group is derived from a polyolefin having {overscore (M)}w/{overscore (M)}n of greater than 5.
Dependencies are inferred from the claim text.