摘要:
The invention relates to pigments containing sulfate and aluminium and comprising structural units of pseudo-boehmite. The invention also relates to the production thereof and the use of the same for producing paper. Said pigments give surprisingly good printing results when used to produce paper for ink jet colour printers and are also easy to produce.
摘要:
The invention relates to a novel method for producing mononatrium trihydrogen pyrophosphate and to the use of products produced by said method as acidifiers, buffering agents and complexing agents. The novel method is characterised in that glassy, acidic natrium polyphosphate containing a Na/P ratio of 1: 2 in fine powder form is tempered at temperatures ranging between 100 and 200 DEG C in moist air with a steam pressure of between 10 and 200 mBar, or in a polar solvent, in which the phosphate is insoluble, in the presence of a quantity of water sufficient for the hydrolysis, until the mass has been predominantly converted into NaH3P2O7.
摘要翻译:本发明涉及一种用于生产焦磷酸三氢一钠的新方法,以及由该方法生产的产品作为酸化剂,缓冲剂和络合剂的用途。 该新方法的特征在于,将细粉末形式的Na / P比为1:2的玻璃态酸性聚磷酸钠在100-200℃的温度范围内在蒸汽压力为10-200mbar的潮湿空气中进行回火 或者在磷酸盐不溶于其中的极性溶剂中,在足以水解的一定量的水存在下,直到物质主要转化为NaH 3 P 2 O 7。
摘要:
The invention relates to a device for producing corrosive, acidic phosphate melts. The device comprises a gas-tight reactor (1) which is erected horizontally or vertically and which can be heated inductively or using carbon heating elements. Said device is configured for receiving liquid and/or solid starting materials, whereby the reactor wall consists of a granite external wall (24) and an inner glass-carbon layer (22). The invention also relates to a device for producing the phosphate melts.
摘要:
The invention relates to a method for dyeing ceramic surfaces using aqueous solutions of metal compounds which produce pigments when they are baked, these prigments then dyeing the ceramic. According to said method, a mixed phase pigment consisting of the aqueous dye solution and a soluble compound of a lanthanoid ion is produced in the surface of the ceramic bodies by applying the aqueous dye solution and a solution of the lanthanoid ion to the surface layer, together or one after the other, and then baking the ceramic body at 800 to 1400 °C after the solvent has dried.
摘要:
Die vorliegende Erfindung hat ein Verfahren zur Erzeugung von Dekor auf keramischen Oberflächen und ein neues Auftragsverfahren zum Färben von keramischen Oberflächen zum Gegenstand. Als farbgebende Metallsalzpulver werden wasserlösliche Verbindungen der Übergangsmetalle und der seltenen Erden und/oder die wasserunlöslichen Pigmente der Übergangsmetall und/oder der seltenen Erden verwendet. Durch das Verfahren können Punkt- und Strichmuster, aber auch mittels Schablone farbiges Dekor auf der Keramikoberfläche erzeugt werden.
摘要:
The present invention relates to a wet-process technique for refining phosphoric acid, consisting in multi-step removal of impurities by means of a solvent mixture, which is distillated and cycled. The inventive method permits the economic production of two phosphoric acid qualities with a high yield and purity grade.
摘要:
The use is disclosed of acid sodium polyphosphates for inhibiting the germination of moulds and yeasts. The disclosed polyphosphate contains 70 to 77 wt % P2O5, 20 to 27 wt % Na2O, 2 to 3 wt % water and has an average linear condensation degree from 8 to 20.
摘要:
New hydrolysis-resistant polyester amides with high molecular weight and partially isocyanate-terminated chains are disclosed, as well as their production and use, in particular for producing shoe-reinforcing materials. The special resistance to hydrolysis is achieved on the one hand by a special monomer selection, but on the other hand by a special process. The polyester amide may be most easily processed as a granulate or powder in powder coating machines.
摘要:
Die vorliegende Erfindung betrifft neue amphotere Leimungsmittel, die in Form ihrer wässrigen Dispersion eingesetzt werden. Sie sind erhältlich durch Polykondensation eines Copolymer-Halbestersalzes mit einem Polyamin und/oder Polyamidoamin im wässrigen Medium. Das Copolymer Halbestersalz wird durch radikalische Polymerisation von Maleinsäureanhydrid mit einem 8-22 Kohlenstoffe enthaltenden alpha-Olefin hergestellt. Das neue amphotere Leimungsmittel ist für die Leimung von Papiererzeugnissen im weitem pH Bereich einsetzbar.