Abstract: This invention pertains to a method for removing small impurity particles and dissolved substances from an aqueous dispersion or pulp slurry. The invention in particular pertains to a method for deinking of newsprint. In its most general aspect the invention relates to removing of dissolved substances, preferably organic substances and small impurity particles from an aqueous dispersion.

Abstract: The present invention relates to a process for sizing cellulose fibers or cellulose fiber containing materials and to a composition for carrying out the process. More particularly the invention relates to a process for sizing according to which cellulose fibers or cellulose fiber containing materials in a manner known per se are brought into contact with compounds having the general formula ##STR1## WHEREIN R.sub.1 is an organic, hydrophobic group having 8 to 40 carbon atoms and R.sub.2 is an alkyl group having 1 to 7 carbon atoms or has the same meaning as R.sub.1.

Abstract: The present invention relates to a process for reducing the build-up of polymer on the internal surfaces of a polymerization vessel. This is accomplished according to the invention by coating the internal surfaces of the polymerization vessel with a polymeric material and insolubilizing said material by cross-linking.

Abstract: An electrode or electrode assembly comprising an anode of titanium, a cathode of iron or steel and a layer intermediate said anode and cathode comprising silver or gold.

Abstract: The present invention relates to a composition for the sizing of materials containing cellulosic fibers (e.g. paper) by the use of carbamoyl chlorides.

Abstract: Forming a plastic containing paper product by introducing expandable plastic pellets between two partially dewatered webs of cellulose fibers, pressing together and heating.