摘要:
The invention relates to improved metal oxide nanoparticles, particularly zinc oxides, that are modified with silanes. The particles thus obtained are suitable for improved UV protection of polymers.
摘要:
The invention relates to a process for the preparation of nanoporous amino resin foams, the nanoporous amino resin foams obtainable by this process and the use of the foams for acid gas adsorption-desorption application.
摘要:
The present invention relates to a novel polymeric composition comprising a novel polymer having two or more repeat units and a terminus having the structure (1), wherein R 1 represents a C 1 -C 20 substituted or unsubstituted alkyl group, w is a number from 1-8, X is oxygen(O) or nitrogen (N), and R d is a reactive group. The invention also relates to a process for forming a pattern using the novel polymeric composition. The invention further relates to a process of making the novel polymer.
摘要:
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von wenigstens einer Cyclohexanpolycarbonsäure oder einem Derivat davon durch Inkontaktbringen wenigstens einer entsprechenden Benzolpolycarbonsäure oder eines Derivates davon mit einem Wasserstoff enthaltenden Gas in Gegenwart wenigstens eines Hydrierkatalysators, dadurch gekennzeichnet, dass das Inkontaktbringen bei einer Leerrohrgeschwindigkeit von höchstens 50 m/h erfolgt.
摘要:
An aqueous solution comprising acrylic acid and the conjugate base thereof in a total amount, calculated as acrylic acid, of at least 10% by weight, based on the weight of the aqueous solution, and, based on the total amount of acrylic acid and the conjugate base thereof present in the aqueous solution, calculated as acrylic acid, ≥ 50 ppm by weight in total of propionic acid and the conjugate base thereof, calculated as propionic acid, ≥ 200 ppm by weight in total of formic acid and the conjugate base thereof, calculated as formic acid, ≥ 3000 ppm by weight in total of acetic acid and the conjugate base thereof, calculated as acetic acid, ≤ 10 ppm by weight in total of benzoic acid and the conjugate base thereof, calculated as benzoic acid, ≤ 10 ppm by weight in total of maleic anhydride, maleic acid and the conjugate bases thereof, calculated as maleic acid, ≤ 10 ppm by weight in total of phthalic anhydride, phthalic acid and the conjugate bases thereof, calculated as phthalic acid, 50 ppm by weight of acrolein, 50 ppm by weight of benzaldehyde, 50 ppm by weight of 2-furaldehyde, and at least 20 mol% of at least one alkali metal cation, process for preparing this solution and the use of this solution for preparation of polymer by free-radical polymerization.
摘要:
The present invention relates to an apparatus for the separation of magnetic constituents from a dispersion comprising these magnetic constituents and nonmagnetic constituents, comprising at least one loop-like canal (5) through which a dispersion flows having at least two inlets (1, 2) and at least two outlets (3, 4), further comprising at least one magnet (6) that is moveable alongside the canal (5), wherein the canal (5) is arranged relative to gravity in a way that nonmagnetic constituents are assisted to go into at least the one first outlet (3) (stream I) by sedimentation and by the current of the dispersion and magnetic constituents are forced into at least one second outlet (4) (stream II) by magnetic force against a current of flushing water. Furthermore, the present invention relates to a process for the separation of magnetic constituents from a dispersion comprising these magnetic constituents and nonmagnetic constituents.
摘要:
The present invention relates to a stable mixture comprising surface-modified particles obtained by reacting metal or semi-metal oxide particles with at least one compound selected from silicon-containing compounds which carry one, two or three alkoxy radicals, and at least one solvent, at least one surface-active substance or a mixture thereof, to the use of these particles in systems in which they are brought into contact with at least one solvent, the mass ratio of solvent to modified particle being greater than 500, and to the use of these particles in agglomeration-deagglomeration cycles.