Abstract: Unsaturated linear polymers have repeating units of a reaction product of a first monomer, a second monomer, a third monomer and optionally a fourth monomer. The linear polymers have a glass transition temperature ranging from about 52.degree. C. to about 61.degree. C. The first monomer should have a weight average molecular weight less than 200. The second monomer may be a dicarboxylic acid or diester which is different than the third monomer. A concentration of second residues of the polymer, derived from the second monomer, ranges from about 3 wt. % to about 15 wt. %, based on the total weight of the polymer. The third monomer is an aromatic dicarboxylic acid or an ester thereof. In the polymer, a concentration of third residues, derived from the third monomer, ranges from about 40 wt. % to about 55 wt. %, based on the total weight of the polymer. The fourth monomer is a diol having a higher molecular weight than the first monomer.

Abstract: A reactive melt mixing process for preparing toner resin, comprising: melting a reactive base resin, thereby forming a polymer melt; adding to said polymer melt a free radical initiator compound and optionally a vinyl monomer compound to form a second melt; and heating and mixing under high shear said second melt with optional addition of a vinyl monomer compound to form a partially crosslinked and partially gelled toner resin.

Abstract: A reactive melt mixing process for the preparation of a toner resin comprising the steps of(a) melt mixing a base resin with a matrix resin containing a crosslinking agent, thereby forming a polymer melt; and(b) crosslinking said polymer melt under high shear to form a crosslinked toner resin.

Abstract: A process for enabling effective toner pigment dispersion which comprises dry blending toner resin, pigment, and a polymeric alcohol of the formulaCH.sub.3 (CH.sub.2).sub.n CH.sub.2 OHwherein n is a number of from about 15 to about 300; subsequently melt processing the aforementioned mixture by heating; cooling the mixture formed; micronizing the formed toner product and thereafter accomplishing classification thereof.

Abstract: A toner composition comprised of particles of a polyester with siloxane block segments therein, which particles have incorporated therein release additives.