Colloidally stabilized suspension process

Details Colloidally stabilized suspension process Colloidally stabilized suspension process

1988-03-21

1990-10-23

Lesmes, George F.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

428403, 430137, B32B 2714, G03G 500

Patent

active

049651315

ABSTRACT:
A method of preparing polymer particles having narrow size distribution in a suspension process employing a solid colloidal stabilizing agent. The solid colloidal stabilizer is a copolymer of about 25 to about 80% by weight, based on total monomer weight, of an additional polymerizable nonionic oleophilic monomer, about 5 to about 45%, by weight, of an addition polymerizable nonionic hydrophilic monomer, about 1 to about 50% of an addition polymerizable ionic monomer, and 0 to about 20 percent, by weight, of a crosslinking monomer having at least two addition polymerizable groups. Also disclosed are polymeric particles comprising a core polymer covered by a layer of the smaller copolymer stabilizer particles and electrostatographic toners comprising such polymeric particles.

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patent: 4138383 (1979-02-01), Rembaum et al.
patent: 4148741 (1979-04-01), Bayley
patent: 4601968 (1986-07-01), Hyosu
patent: 4680200 (1987-07-01), Solc
patent: 4708923 (1987-11-01), Myers, Jr. et al.
patent: 4833060 (1989-05-01), Nair et al.

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