Abstract: A universal connection system for pipe connections provides a universal connection system for pipe ends with straight cut and/or miter cut as well as with a miter cut with radii made in one piece for straight, T-shaped, crossed as well as acute-angled and obtuse-angled pipe connections as well as for pipe ends with elbows, pipe bends, sections, hollow sections and plates with invisible connection elements. The system is also suitable for pipe systems for ducting cables and for carrying all types of gaseous and liquid media. The system includes clamping systems (2) or clamping systems (2) coupled with straight or hinge-shaped connection elements with axially and radially movable tie-in points. Threaded bolts, that (6) can be arranged centrally, straight, T-shaped and crossed and acute-angled and obtuse-angled connections of pipe sections (8) with one another or of pipe sections (8) with solid sections, elbows, pipe bends, plates and the like can be easily mounted and are invisible.

Abstract: Aqueous pigment preparations containing a) at least one pigment, b) at least one condensation product based on A) suphonated aromatics, B) aldehydes and/or ketones and optionally C) one or several compounds selected from the group of non sulphonated aromatics, urea and urea derivatives, and c) at least one polyether polyol with a boiling point of above 150° C., at normal pressure. The inventive preparations are highly suitable for pigmenting natural or synthetic materials.

Abstract: The present invention relates to polymers whitened with optical brighteners obtained by (a) emulsion polymerization of acrylonitrile with or without a comonomer in the presence or absence of a graftable substrate, and (b) addition of an optical brightener before, during, or after the emulsion polymerization.

Abstract: The present invention relates to polymers whitened with optical brighteners obtained by

Abstract: The invention relates to a stack-holding member with ring or disk shaped parts having a radial opening, such as lock rings and the like, which are arranged on a stack-holding member inserted in the inner space of the stack of rings, the stack-holding member supporting the rings, with play, and orienting the rings in the same direction so that the rings may be easily removed from or added to the stack.