Processes for the preparation of polymers

Details Processes for the preparation of polymers Processes for the preparation of polymers

1992-04-23

1994-02-22

Goodrow, John

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Process of making developer composition

G03G 9087

Patent

active

052885852

ABSTRACT:
A process for the preparation of a toner composition which comprises (1) mixing a water soluble monomer or monomers, and an oil soluble monomer or monomers with polymerization initiators, a crosslinking component and a chain transfer component; (2) effecting bulk polymerization until from about 10 to about 40 weight percent of the water soluble and oil soluble monomer or monomers have been polymerized; (3) cooling the product obtained; (4) mixing with the aforesaid partially polymerized product components comprised of charge control agents, pigments, dyes, initiators, chain transfer agents and crosslinking agents to formulate a uniform organic phase; (5) dispersing the organic phase into from between about 2 to about 5 times its volume of water containing from between about 1 to about 5 weight percent of a stabilizing component to form a suspension with an average particle size of from between about 5 to about 25 microns and a particle size distribution of from about 1.1 to about; and (6) suspension polymerizing to complete the conversion of said monomer, or said monomers to polymer.

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patent: 4816366 (1989-03-01), Hyosu et al.
patent: 5043404 (1991-08-01), Mahabadi et al.
patent: 5135832 (1992-08-01), Sacripante et al.

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