Photographic additive dispersions and a method of preparing the

Details Photographic additive dispersions and a method of preparing the Photographic additive dispersions and a method of preparing the

1992-09-01

1994-05-10

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Nonradiation sensitive image processing compositions or...

430546, 430631, G03C 104, G03C 138

Patent

active

053106326

ABSTRACT:
A dispersion of a photographic additive in a hydrophilic colloid having improved stability against the formation of crystals by incorporated into the oil phase of the dispersion prior to mixing, less than 2 percent by weight, based on the weight of the oil phase, of a compound having the formula ##STR1## wherein R, R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are independently selected from alkyl including linear, branched or in substituted alkyl having from 1 to 25 carbon atoms, the substituents being aryl, halo, cyano; aryl, including substituted aryl, the substituents being alkyl or halo; wherein addition to the above, R may also be a siloxane or polysiloxane to give a branched molecule; and in addition to the above, R.sub.3 and R.sub.4 may also be alkoxy and m and n have values from 0 to 5000.

REFERENCES:
patent: 3860425 (1975-01-01), Ono et al.
patent: 4004927 (1977-01-01), Yamamoto et al.

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