Patent ID: 7589150

Claim:
A toner comprising a resin and a colorant, wherein the resin has lubricant properties and is prepared by admixing a thermoplastic resin having a primary, secondary or tertiary group reactive with active hydrogens with an isotactic polypropylene derivative having an active hydrogen group under reaction conditions sufficient to form a toner resin having lubricant properties wherein the isotactic polypropylene derivative is one comprising the reaction product of admixing: (a) an isotactic polypropylene homopolymer prepared by a process including polymerizing propylene in the presence of a metallocene catalyst at a temperature of from about 30 to about 120 degrees centigrade under reaction conditions sufficient to polymerize propylene wherein the isotactic polypropylene has: (i) an isotactic index of from about 75 to about 85 percent isotactic pentads; (ii) a number average molecular weight of from about 1,000 to about 5,000 daltons; (iii) a weight average molecular weight of from about 2,000 to about 10,000 daltons; and (iv) a melting point range of from about 80 to about 120 degrees centigrade; (b) an isotactic copolymer prepared by a process including polymerizing propylene and from 0.1 to 50 mole percent of at least one co-monomer in the presence of a metallocene catalyst at a temperature of from about 30 to about 120 degrees centigrade under reaction conditions sufficient to polymerize propylene wherein the isotactic copolymer has: (i) an isotactic index of from about 60 to about 95 percent isotactic pentads; (ii) a number average molecular weight of from about 300 to about 10,000 daltons; (iii) a weight average molecular weight of from about 600 to about 20,000 daltons; and (iv) a melting point range of from about 50 to about 120 degrees centigrade; or (c) a mixture of (a) and (b); with a derivatizing agent or a series of derivatizing agents under reaction conditions sufficient to add to the isotactic polypropylene homopolymer or isotactic polypropylene copolymer or mixtures thereof, a functional group selected from the group consisting of alcohol, ester, anhydride, carboxylic acid, amine, nitrile, imine, silane, siloxane, sulfonate, alkane, aldehyde, epoxide, organoborane, ethoxylate, propoxylate, higher alkoxylate, and halogen functional groups.