Imagewise distribution of sulfate group on substrate polymer by

Details Imagewise distribution of sulfate group on substrate polymer by Imagewise distribution of sulfate group on substrate polymer by

1975-05-29

1976-11-16

Kimlin, Edward C.

Gas separation: apparatus

Electric field separation apparatus

Including gas flow distribution means

96 48R, 96 87R, 96115R, G03C 176

Patent

active

039922090

ABSTRACT:
This invention concerns a photoimaging procedure in which the image is characterized by a differential concentration of sulfate groups, depending upon the degree of light exposure, and is developable by selective absorption of dyes and other procedures. The sulfate groups can be obtained by SO.sub.2 treatment of hydroperoxy groups produced in a photooxidation imaging procedure.

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patent: 3679422 (1972-07-01), Muriac et al.
patent: 3684511 (1972-08-01), Weyde et al.
patent: 3692526 (1972-09-01), Ulbing

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