Eastman-kodak Company

Henry V Isaacson

Michael T Regan

Hal E Wright

Beth G Wright

Novel polyesters comprising repeating units from:

Ionic polyesters for electrically photosensitive composite particles,

Electrically photosensitive materials and elements comprising an electrically photosensitive polymeric compound of the structure: ##STR1## wherein: R.sub.1 and R.sub.3, which are the same or different, represent a substituted or unsubstituted alkyl group having from 1 to 18 carbon atoms or a substituted or unsubstituted aryl group;

Electrically photosensitive materials and elements for

A suspension polymerization process for polymerizing a styrene-containing monomer composition in the presence of untreated carbon black to produce a polymer comprising more than 40 weight percent of styrene moiety is described. The monomer composition comprises at least one styrene monomer having a substituent with a Hammett sigma value more positive than about 0.06.

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Webster, NY, United States of America

Henry V Isaacson