Abstract:
The invention relates to a method for producing hydroxybenzophenone polyglycol ether (meth)acrylate comprising the steps of (i) reacting hydroxybenzophenone with ethylene carbonate to obtain hydroxybenzophenone monoglycol ether, (ii) ethoxylating hydroxybenzophenone monoglycol ether with ethylene oxide to obtain hydroxybenzophenone polyglycol ether, and (iii) transesterifying hydroxybenzophenone polyglycol ether with alkyl (meth)acrylate to obtain hydroxybenzophenone polyglycol ether (meth)acrylate.
Abstract:
The invention relates to a method for producing a compound according to general formula (I), wherein R is H or C 1 -C 6 alkyl, by reaction of at least one compound of formula (II), wherein R has the the same meaning as in formula (I) and wherein R 1 is H, C 1 -C 12 alkyl or C 3 -C 12 cycloalkyl, with a compound of formula (III), wherein R 2 is H or C(O)R 3 , R 3 being H or C 1 -C 12 alkyl, in the presence of at least one enzyme suitable for transesterification.
Abstract:
The present invention provides a process for preparing a solution of electrically uncharged [(OH) x (NH 3 ) y Zn] z where x, y and z are each independently 0.01 to 10, comprising at least the steps of (A) contacting ZnO and/or Zn(OH) 2 with ammonia in at least one solvent in order to obtain a solution of electrically uncharged [(OH) x (NH 3 ) y Zn] z where x, y and z each independently 0.01 to 10 with a concentration c1, (B) removing some solvent from the solution from step (A) in order to obtain a suspension comprising Zn(OH) 2 , (C) removing solid Zn(OH) 2 from the suspension from step (B), and (D) contacting the Zn(OH) 2 from step (C) with ammonia in at least one solvent in order to obtain a solution of electrically uncharged [(OH) x (NH 3 ) y Zn] z where x, y and z are each independently 0.01 to 10 with the concentration c2, and to highly concentrated solutions of electrically uncharged [(OH) x (NH 3 ) y Zn] z where x, y and z are each independently 0.01 to 10, to a process for producing a layer comprising at least zinc oxide on a substrate, comprising at least the steps of (E) preparing a solution of electrically uncharged [(OH)x(NH3)yZn]z where x, y and z are each independently 0.01 to 10 by the former process according to the invention, (F) applying the solution from step (E) to the substrate and (G) thermally treating the substrate from step (F) at a temperature of 20 to 450 °C in order to convert electrically uncharged [(OH) x (NH 3 ) y Zn] z where x, y and z are each independently 0.01 to 10 to zinc oxide.
Abstract:
The present invention relates to a method for producing a layer containing at least one semiconductive metal oxide on a substrate, comprising at least the steps of: (A) producing a solution containing at least one precursor compound of the at least one metal oxide selected from the group of carboxylates from monocarboxylic, dicarbonic, or polycarboxylic acids with at least three carbon atoms or derivatives of monocarboxylic, dicarbonic, or polycarboxylic acids, alcoholates, hydroxides, semicarbazides, carbamates, hydroxamates, isocyanates, amidins, amidrazones, carbamide derivatives, hydroxylamines, oximes, urethanes, ammonia, amines, phosphines, ammonium compounds, azides of the corresponding metal and compounds thereof, in at least one solvent; (B) application of the solvent of step (A) on the substrate; and (C) thermal treatment of the substrate of step (B) at a temperature of 20 to 200 degrees Celsius, in order to transfer the at least one precursor compound in at least one semiconductive metal oxide. In the event that in step (A), electrically neutral [(OH) x (NH 3 ) y Zn] z with x, y, and z independently from one another 0.01 to 10, is used as precursor compound, said precursor compound is obtained by conversion of zinc oxide or zinc hydroxide with ammonia; a substrate, which is coated with at least one semiconductive metal oxide, obtainable by said method; the application of said substrate in electronic components; and a method for producing electronically neutral [(OH) x (NH 3 ) y Zn] z with x, y, and z independently from one another 0.01 to 10, by conversion of zinc oxide and/or zinc hydroxide with ammonia.
Abstract:
The present invention relates to particles modified using a modifier, and a dispersing means comprising said modified particles. The surface-modified metal, metal halogenide, metal chalcogenide, metal nitride, metal phosphide, metal boride, or metal phosphate particles or mixtures thereof have an average particle diameter of 1 to 500 nm and the surface thereof was modified using one or more modifiers of the formula (I), (II), and (III).