Compositions – Electrolytes for electrical devices
Patent
1970-05-28
1976-05-25
Powell, William A.
Compositions
Electrolytes for electrical devices
96 1LY, 96 1SD, G03G 900
Patent
active
039591530
ABSTRACT:
This invention is a method for manufacturing an electrophotographic developer for use in electrophotography or electrostatic recording processes. The developer comprises polymer particles by suspension polymerizing, in an aqueous phase, a polymerization liquid comprising at least one polymerizable vinyltype monomer, a polymerization initiator, and a finely divided dispersion stabilizer either sparingly soluble or insoluble in water and said monomer. Said polymerization liquid is blended prior to suspension polymerization. The improvement includes adding to said liquid, a resinous substance, as a fluidizer which is soluble in the monomer and having a solubility parameter in the range of from 7.8 to 16.1. During the blending, the dispersion stabilizer is uniformly dispersed throughout said polymerization liquid. Next, the blended polymerization liquid containing the fluidizer is suspended in the aqueous phase and then such blend is subjected to said suspension polymerization to effect polymer particles having diameters in the range of 0.1 to 100.mu..
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Kaneko Hiroyuki
Nishio Daijiro
Ohe Keitaro
Sadamatsu Shigeru
Baker Joseph J.
Ferguson Jr. Gerald J.
Fuji Photo Film Co. , Ltd.
Leitten Brian J.
Powell William A.
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