Abstract: Unique titanium dioxide (TiO.sub.2) particulates have an especially high physicochemical affinity for cellulosic fibers and, thus, are well suited as opacifying pigments for paper and paper laminates, and include a zeta potential-adjusting amount of at least one cationic polymer, e.g., a polymer of a quaternary ammonium, sulfonium or phosphonium salt or a copolymer of acrylamide with a cationic comonomer, fixed to the face surfaces thereof.

Abstract: An asynchronous time division multiplex switching network for switching multi-service communication data performs point-to-point data switching, data switching between a single calling party and a plurality of called parties, and data switching between plural calling parties and a single called party. The network comprises plural incoming and outgoing time division multiplex highways including asynchronous channels each formed by a packet data and an address label (j, k). Incoming and outgoing terminal switching equipments are respectively connected to the incoming and outgoing highways. A bus interconnects the terminal switching equipments. The labels are converted into several sub-words according to the type of communication switching. In response to the values of these sub-words, the outgoing terminal switching equipments accept or do not accept the packets to be transmitted.

Abstract: Compositions are provided which consist of a solid suspension of:a. a prepolymer obtained by reacting a N,N'-bis-imide of an unsaturated dicarboxylic acid of general formula: ##STR1## in which D represents a divalent organic radical containing a carbon-carbon double bond and A represents a divalent organic radical possessing from 2 to 30 carbon atoms, and a polyamine of general formula:R (NH.sub.2).sub.xin which x represents an integer at least equal to 2 and R represents an organic radial of valency x, the bis-imide being used in an amount from 0.55 to 25 mols per mol of --NH.sub.2 group introduced by the polyamine, suspended in:B. water, and optionally,C. a polar water-miscible organic solvent having a boiling point between 110.degree. C and 270.degree. C in an amount up to 50% by weight of the liquid phase. These compositions are thixotropic and useful for coating and impregnating fibrous materials and the like from which valuable resinous composites can be obtained.