Process for preparing stable dispersions useful in transparent c

Details Process for preparing stable dispersions useful in transparent c Process for preparing stable dispersions useful in transparent c

1990-10-25

1993-05-11

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

523351, C08K 700

Patent

active

052101142

ABSTRACT:
Provided is a process for preparing a stable dispersion. The dispersion is comprised of a pigment, such as cuprous iodide, dispersed in a binder resin solution. The process is comprised of first dispersing the pigment into a binder resin solution, grinding the dispersion, preferably until a bi-modal distribution of pigment particles is obtained, separating the dispersed particles into two fractions and then recovering the fraction having the smaller average particle size. The resulting dispersion has been found to be quite stable and useful in transparent coatings applicable to electrophotography, electrostatic and thermal imaging elements.

REFERENCES:
patent: 4102846 (1978-07-01), Bentley et al.
patent: 4371642 (1983-02-01), Jaffe
patent: 4681803 (1987-07-01), Liu
patent: 4783502 (1988-11-01), Faler et al.
patent: 4832984 (1989-05-01), Hasegawa et al.

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