Xerox Corporation

William J Dale

George Liebermann

Guerino G Sacripante

Raj D Patel

Stephan V Drappel

Grazyna E Kmiecik-Lawrynowicz

Michael A Hopper

Richard P Veregin

Marko D Saban

Michael K Georges

Melvin D Croucher

T Hwee Ng

Lupu Alexandru

Maria N McDougall

Sheau V Kao

Robert A Nelson

Paul D Szabo

Nam S Ro

Daniel M McNeil

Richard L McQueen

A process which comprises reacting a polyester resin endcapped with hydroxyl moieties or groups with an organic acid anhydride at a temperature of from about 125.degree. C. to about 200.degree. C., thereby resulting in a polyester resin endcapped with acidic moieties or acid groups.

Toner compositions with modified polyester resins

A process for the preparation of toner comprising:

Toner aggregation process

A process for forming a copolymer of butadiene and other monomers such as styrene is disclosed wherein the final product is characterized by a low residual butadiene content. The process comprises: (a) charging a reaction vessel with butadiene and styrene; (b) initiating said copolymerization reaction; (c) after the exotherm phase of said reaction, purging said reaction vessel with an inert gas while heating said reaction vessel to a final polymerization temperature.

Process for obtaining copolymers with a very low content residual

A suspension polymerization process for the preparation of a polymeric material formed from at least two monomers, a non-gaseous monomer and a gaseous monomer. The composition of the beads or particles of the polymeric material is controlled by adding gaseous monomer to the vapor phase after polymerization of about 5% to about 90% by weight of the non-gaseous monomer or by removing a portion or substantially all of the gaseous monomer in the vapor phase before polymerization of about 70% by weight of the gaseous monomer in the aqueous suspension, or a combination thereof.

Suspension polymerization process for the preparation of polymeric

A free radical suspension polymerization process for obtaining crosslinked styrene butadiene ternary copolymers which comprises the polymerization of styrene monomers, butadiene monomers, and crosslinking components in the presence of a surfactant, a stabilizer, and a first and second initiator; and wherein the aforementioned components are present in an aqueous phase; heating the resulting aqueous mixture at a temperature of from about 50.degree. C. to about 110.degree. C.; thereafter heating the mixture at a temperature of from about 110.degree. C. to about 150.degree. C.; followed by cooling and isolating the desired product.

Processes for the preparation of crosslinked copolymers

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Scarborough, Canada

William J Dale