Agfa-gevaert Ag

Walter De Winter

Wolfgang Podszun

Carlhans Suling

Herman J Uytterhoeven

John W Goossens

Wolfgang Richter

Gunther Hoffarth

Daniel M Timmerman

Bead polymers having an average particle diameter of from 0.5 to 10 .mu.m and a narrow particle diameter distribution of K.ltoreq.0.25 and containing from 1 to 60% by weight of chemically bound fluorine are suitable for use as matting agents and spacers in photographic recording materials.

Bead polymers containing fluorine

An electrostatographic suspension developer contains a dispersed pigment and a copolymer of

Electrostatographic suspension developer and a process for its

An electrostatographic suspension developer contains, in an electrically insulating carrier liquid with a volume resistivity of at least 10.sup.9 Ohm. cm and a dielectric constant of below 3, a dispersed pigment and a polymer of basic secondary or tertiary amino group-containing monomers, the amino groups of which are completely or partially neutralized with a Bronsted acid, which contains at least one hydrocarbon radical having from 6 to 24 carbon atoms, and optionally further comonomers.

Electrostatographic suspension developer and a process for the

Growing community of inventors

Grafenwezen, Belgium

Walter De Winter