Surface modified particles and method of making the same

A surface modified pigment particle, comprising:

• a pigment particle having an amorphous coating of at least one electric charge modifying agent and at least one dispersion promoting agent.

A surface modified pigment particle, comprising:

• a pigment particle selected from the group consisting of metal oxides having an amorphous coating of at least one electric charge modifying agent and at least one dispersion promoting agent, wherein said at least one electric charge modifying agent is an inorganic material selected from the group consisting of Mg, Ca, Ba, Sr, Ti, V, Zr, Cr, Mn, Fe, Co, Ni, Cu, Zn, Si and Al and said at least one dispersion promoting agent is an organic material selected from the group consisting of stearates, acetates, alkylphenols, cellulosics, waxes, lignins, acrylics, epoxies, urethanes, ethylenes, styrenes, propylenes and polymers having functional groups of alcohols, glycols, aldehydes, amides and carboxylic acids.

A colored cementitious composition, comprising:

• a cement and surface modified pigment particles selected from the group consisting of metal oxides having an amorphous coating of at least one electric charge modifying agent and at least one dispersion promoting agent.

A magnetic toner composition, comprising:

• surface modified pigment particles selected from the group consisting of metal oxides having an amorphous coating of at least one electric charge modifying agent and at least one dispersion promoting agent.

A coating composition, comprising:

• a base, a vehicle, a binder and surface modified pigment particles selected from the group consisting of metal oxides having an amorphous coating of at least one electric charge modifying agent and at least one dispersion promoting agent.

A surface modified iron oxide pigment, comprising:

• an iron oxide pigment selected from the group consisting of red, yellow and black iron oxide, said iron oxide pigment having an amorphous coating of at least one electric charge modifying agent selected from the group of inorganic materials consisting of Mg, Ca, Ba, Sr, Ti, V, Zr, Cr, Mn, Fe, Co, Ni, Cu, Zn, Si and Al and at least one dispersion promoting agent selected from the group of organic materials consisting of stearates, acetates, alkylphenols, cellulosics, waxes, lignins, acrylics, epoxies, urethanes, ethylenes, styrenes, propylenes and polymers having functional groups of alcohols, glycols, aldehydes, amides and carboxylic acids.