Eastman-kodak Company

Donald A Upson

David J Steklenski

Paul D Yacobucci

Tsang J Chen

Diane E Kestner

Howard M Low

Peter S Alexandrovich

Domenic Santilli

Glenn T Pearce

Gerald A Campbell

William K Goebel

Martin A Berwick

Drewfus Y Myers, Jr

Chandrasekha Sreekumar

Herein are disclosed polyurethane elastomers comprising a charge-control agent of the formula: ##STR1## The elastomers are useful in making shaped articles.

Polyurethane elastomers comprising a charge control agent and shaped

Polyurethane elastomers comprising a charge-control agent and shaped

The invention provides new crosslinked vinyl polymer particles, new coating compositions containing such particles, new liquid electrographic developers containing such particles, new electrographic elements containing one or more layers comprising such particles, and new electrographic records containing toner images and/or layers comprising such particles. The polymeric particles of the invention are characterized in that each particle has an average diameter less than one micrometer and comprises a crosslinked vinyl addition copolymer obtainable by aqueous emulsion polymerization of a mixture of monomers wherein:

Crosslinked vinyl polymer particles and electrographic elements and

Novel acrylonitrile copolymers

Polymers having excellent adherence to film supports such as cellulose acetate are disclosed. The polymers comprise random recurring units having the structure

Vinyl acetate polymers and latex compositions containing same

A coating composition useful in forming conductive layers comprises a latex having water as a continuous phase and, as a dispersed phase, hydrophobic polymer particles having associated therewith a polyaniline salt semiconductor. The coating composition can be coated on a variety of supports to produce conductive elements. The coating compositions are particularly useful in forming antistatic layers for photographic elements or conducting layers for electrophotographic and electrographic elements. Also disclosed is a preferred process for preparing a latex coating composition comprising the steps of loading polymer particles with the polyaniline component of the polyaniline acid addition salt semiconductor and then acidifying the latex to form a polyaniline salt coating composition.

Conductive latex compositions, elements and processes

Acrylonitrile copolymers as protective overcoats in photographic elements

Latex compositions comprising core-shell polymer particles are disclosed. The core has a glass transition temperature greater than 70.degree. C. The shell has a glass transition temperature of from about 25.degree. to 60.degree. C. The compositions form coalesced coatings that are resistant to ferrotyping.

Latex composition comprising core-shell polymer particles

A coating composition useful in forming conductive layers comprises a conductive, water-dispersible, particulate polymer and a crosslinkable latex binder. The crosslinkable latex has a first glass transition temperature before crosslinking of substantially less than 50.degree. C. and a second glass transition temperature after crosslinking and coalescing of substantially greater than 50.degree. C. wherein the first and second glass transition temperatures differ by more than 4.degree. C. The coating composition can be coated on a variety of supports to produce conductive elements. The coating compositions are particularly useful in forming photographic elements which are resistant to the buildup of static charge and ferrotyping.

Antistatic compositions comprising crosslinkable latex binders

Conductive polyanaline salt-latex compositions, elements and processes

Growing community of inventors

Webster, NY, United States of America

Donald A Upson