Attachment of gelatin-grafted polymer particles to pre-precipita

Details Attachment of gelatin-grafted polymer particles to pre-precipita Attachment of gelatin-grafted polymer particles to pre-precipita

1993-09-14

1995-03-21

Neville, Thomas R.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430503, 430531, 430536, 430537, 430539, 430627, 430628, 430950, 430569, 430567, 430138, G03C 1005

Patent

active

053994809

ABSTRACT:
The invention describes silver halide packet emulsion grains or crystals that are conventionally precipitated using gelatin of a given isoelectric pH, surrounded by a layer of gelatin-grafted-polymer particles wherein the grafted gelatin has a different isoelectric pH and the said gelatin-grafted-polymer particles are optionally chemically bonded to the gelatin surrounding the silver halide microcrystals. Such packet emulsions can form the basis for a mixed-packet color photographic system.

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