Abstract: The present invention relates to a process for preparing cellulose ether products which is characterized in that superabsorbent polymers (SAPs) are dried and milled, or mill-dried, conjointly with moist cellulose ether and also to the cellulose ether products resulting from this process.

Abstract: A description is given of a cellulose ether composition as additive for the extrusion of mineral masses which comprises 70 to 99.9% by weight of cellulose ether and 0.1 to 30% by weight of superabsorbent polymer, as well as a process for the extrusion of mineral masses using these compositions as additive.

Abstract: The present invention relates to a process for preparing cellulose ether products which is characterized in that superabsorbent polymers (SAPs) are dried and milled, or mill-dried, conjointly with moist cellulose ether and also to the cellulose ether products resulting from this process.

Abstract: A method of preparing construction material systems is described. The process includes extruding a composition of construction materials and an irreversibly crosslinked cellulose derivative that is prepared by a particular process.

Abstract: A process for preparing cellulose ethers having delayed dissolution in water is described. The process comprises: (a) treating a moist cellulose ether with a solution comprising a dialdehyde; (b) adding an aqueous salt solution to the moist cellulose ether, such that said cellulose ether has a pH of from 6.0 to 8.0, the aqueous salt addition being performed at least one of, (i) prior to step (a), (ii) concurrently with step (a), and (iii) subsequent to step (a); and (c) drying and comminuting the treated cellulose ether of step (b). The cellulose ether, or mixtures of cellulose ethers, prepared by the method of the present invention may be used as protective colloids, thickeners and adhesives.

Abstract: A description is given of a cellulose ether composition as additive for the extrusion of mineral masses which comprises 70 to 99.9% by weight of cellulose ether and 0.1 to 30% by weight of superabsorbent polymer, as well as a process for the extrusion of mineral masses using these compositions as additive.

Abstract: A description is given of additives for the extrusion of construction material systems, characterized in that the additives comprise irreversibly crosslinked cellulose ethers having gel-like rheological properties, and the use of irreversibly crosslinked cellulose derivatives as additives for the extrusion of construction material systems and also of an extrusion process for construction material systems.

Abstract: A process for preparing cellulose ethers having delayed dissolution in water is described. The process comprises: (a) treating a moist cellulose ether with a solution comprising a dialdehyde; (b) adding an aqueous salt solution to the moist cellulose ether, such that said cellulose ether has a pH of from 6.0 to 8.0, the aqueous salt addition being performed at least one of, (i) prior to step (a), (ii) concurrently with step (a), and (iii) subsequent to step (a); and (c) drying and comminuting the treated cellulose ether of step (b). The cellulose ether, or mixtures of cellulose ethers, prepared by the method of the present invention may be used as protective colloids, thickeners and adhesives.

Abstract: Hydrocolloid mixtures having improved dispersibility in water from an uncross-linked and a cross-linked hydrocolloid are prepared by subjecting at least one of the hydrocolloids to the action of at least one swelling agent or solvent for the hydrocolloid in a mixing apparatus before dispersion and vigorously mixing it therewith.

Abstract: Adhesive dispersions for tiling, based on(1) 10-95% by weight of a water-dilutable, cellulose nitrate-containing paste with a weight ratio of solids to solvent .gtoreq.1,(2) 0.1-50% by weight of an adhesive resin dispersion or an adhesive resin which can be emulsified in H.sub.2 O,(3) 0-70% by weight of a tile adhesive filler,(4) 0-75% by weight of water,(5) 0-10% by weight of a conventional thickener.

Abstract: The present invention relates to new water-soluble copolymers based on acrylic acid derivatives and their use as building material auxiliaries.

Abstract: New water-soluble copolymers based on acrylic acid derivatives and their use as auxiliaries for building materials.

Abstract: Water-soluble substances of high molecular weight obtained by reacting hydroxyalkyl methyl celluloses with copolymers of 2-acrylamido-2-methyl-3-propane sulfonic acid/acrylamide/ethylacrylate and a bifunctional crosslinking component in an alkaline medium.

Abstract: A solar pumped laser in which the lasant is a gas that will photodissociate and lase when subjected to sunrays. Sunrays are collected and directed onto the gas lasant to cause it to lase.

Abstract: A solar energy collector focuses solar energy onto a solar oven which is attached to a mixer which in turn is attached to the channel of a MHD generator. Gas enters the oven and a liquid metal enters the mixer. The gas/liquid metal mixture is heated by the collected solar energy and moves through the MHD generator thereby generating electrical power. The mixture is then separated and recycled.

Abstract: A large volume multiple-path nuclear pumper laser which has improved characteristics over previous cylindrical nuclear pumped laser systems. Large volumes of gas are excited by using internal high reflectance mirrors that are arranged so that the optical path crosses back and forth through the excited gaseous medium. By adjusting the external dielectric mirrors of the laser, the number of paths through the laser cavity can be varied. Output powers have been obtained that are substantially higher than the output powers of previous nuclear laser systems.

Abstract: A volumetric direct nuclear pumped laser has been developed in which the gas is a mixture of .sup.3 He and a minority gas from the group of argon, krypton, xenon, chlorine and fluorine. The mixture of .sup.3 He and the minority gas produces lasing with a minority gas concentration of from 0.01 to 10 percent argon, 1 percent krypton, 0.01 to 5 percent xenon and small concentrations of chlorine or fluorine.