Abstract:
PROBLEM TO BE SOLVED: To provide a process for preparing 3-phenyl(thio)uracils and -dithiouracils.SOLUTION: In the process for preparing 3-phenyl(thio)uracils and -dithiouracils, carbamates having X, X, Ar, and A in formula and enamines having X, R, R, and Rare made to react with each other (in formula, X, X, and Xrepresent oxygen or sulfur, Ar represents a phenyl residue, A represents an amino residue, and R, R, and Rrepresent hydrogen or the like).
Abstract:
화학식 (I) 에따른킬레이트제의제조법으로서: R-CH(COOX)-N(CHCOOX)(I) [식중, R은수소, C-C-알킬, 페닐, 벤질, CHOH, 및 CHCHCOOX로부터선택되고, X는 (MH) 이고 (이때, M 은알칼리금속으로부터선택됨), x 는 0.6 내지 1 의범위임] 하기단계를포함하는제조법: (a) 화학식 (II a) 에따른화합물의고체, 슬러리또는용액을제공하는단계: R-CH(COOX)-N(CHCN)(II a) [식중, X는 (MH) 이고, (이때, M 은알칼리금속으로부터선택됨) y 는 0 내지 1 범위임] (b) 상기고체또는슬러리또는용액을, 알칼리금속히드록시드의수성용액과접촉시키는단계로서, 이때알칼리금속이온대 니트릴기의몰비는 0.6:1 내지 0.95:1 의범위인단계, (c) 화학식 (II a) 에따른상기화합물을상기알칼리금속히드록시드와반응시키는단계.
Abstract translation:根据通式(I),R1-CH(COOX1)-N(CH2COOX1)2制备螯合剂的方法,其中R1选自氢,C1-C4-烷基,苯基,苄基,CH2OH和CH2CH2COOX1,X1 是(M 1 H 1-x),M选自碱金属,x在0.6至1的范围内,所述方法包括以下步骤:(a)提供根据一般化合物的固体,浆液或溶液 其中X2是(MyH1-y),M选自碱金属,y在0-1的范围内,(b)使所述固体与式(IIa)R1-CH 或浆液或溶液与碱金属氢氧化物的水溶液反应,其中碱金属离子与腈基团的摩尔比在0.6:1至0.95:1的范围内,(c)使所述通式(II)的化合物与通式 a)与所述碱金属氢氧化物反应。
Abstract:
The invention relates to a method for operating a fuel cell, particularly for operating a fuel cell in which the electrolyte responsible for proton conduction is volatile. Using the method according to the invention, such fuel cells can be better operated and exhibit an improved service life.
Abstract:
The invention relates to a method for operating a fuel cell, particularly for switching off a fuel cell. In order to switch off the fuel cell, the supply of the gas mixture comprising oxygen and nitrogen is interrupted, wherein the oxygen present at the cathode reacts with the protons present by means of conversion, and the residual oxygen content at the cathode side of the fuel cell is lowered in this manner. Due to the method according to the invention, the fuel cell may be better stored, wherein a defined low chemical potential is applied at both electrodes.
Abstract:
The invention relates to a method for operating a fuel cell, particularly for operating a fuel cell in which the electrolyte responsible for proton conduction is volatile. Using the method according to the invention, such fuel cells can be better operated and exhibit an improved service life.
Abstract:
Disclosed is a composition in the form of a solution and/or dispersion, comprising at least one polyazole that has an intrinsic viscosity ranging from 3.0 to 8.0 g/dL, the viscosity being measured in at least 96 percent by weight of sulfuric acid, and orthophosphoric acid (H3PO4) and/or polyphosphoric acid. Said composition is characterized in that the polyazole content ranges from 0.5 to 30.0 percent by weight relative to the total weight of the composition, the H3PO4 and/or polyphosphoric acid content ranges from 30.0 to 99.5 percent by weight relative to the total weight of the composition, and the concentration of the H3PO4 and/or the polyphosphoric acid, calculated as P2O5 (acidimetrically), ranges from 70.5 to 75.45 percent relative to the total amount of H3PO4 and/or polyphosphoric acid and/or water. Particularly suitable methods for producing and using the composition of the invention are also claimed.
Abstract translation:在溶液和/或分散体,其包含至少ö的特性粘度,聚唑的形式的组合物在至少96测得的重量% - 硫酸,在3.0的范围内至8.0克/分升和o邻 磷酸(H 3 PO 4)和/或聚磷酸,其特征在于: - 聚唑的含量,基于在0.5重量%的范围内的组合物的总重量计30.0重量%的位置, - 的 H 3 PO 4和/或聚磷酸的含量,基于在30.0重量%的范围内的组合物的总重量计,以99.5重量%的位置, - H 3 PO 4和/或聚磷酸的(浓度,如P 2 O 5计算的通过酸量滴定法 ),基于H 3 PO 4的总量和/或聚磷酸和/或水,在70.5%的范围内,以75.45%的。 用于制备根据本发明组合物的应用还特别方便的方法都放置在保护。
Abstract:
Process for making a chelating agent according to the general formula (I), R1-CH(COOX1)-N(CH2COOX1)2 wherein R1 is selected from hydrogen, C1-C4-alkyl, phenyl, benzyl, CH2OH, and CH2CH2COOX1, X1 is (ΜχΗ1-χ), M being selected from alkali metal, x is in the range of from 0.6 to 1, said process comprising the following steps: (a) providing a solid, a slurry or a solution of a compound according to general formula (II a) R1-CH(COOX2)-N(CH2CN)2 wherein X2 is (MyH1-y), M being selected from alkali metal, y is in the range of from zero to 1, (b) contacting said solid or slurry or solution with an aqueous solution of alkali metal hydroxide, wherein the molar ratio of alkali metal ions to nitrile groups is in the range of from 0.6:1 to 0.95:1, (c) reacting said compound according to general formula (II a) with said alkali metal hydroxide.
Abstract:
Recipiente que comprende una dosis unitaria de una composición detergente que contiene al menos dos agentes complejantes (A) disueltos en un medio acuoso líquido o tipo gel a temperatura ambiente, siendo dichos agentes complejantes (A) (A1) al menos una sal de metal alcalino del ácido metilglicina diacético (MGDA), y (A2) al menos una sal de metal alcalino del ácido glutámico-ácido diacético (GLDA), la relación en peso de (A1) y (A2) está en el intervalo de 1:9 a 9:1, en el que dicho recipiente está realizado de un polímero, y en el que dicho medio acuoso comprende al menos un 25% en peso de agua, referido a toda la fase líquida sin agente complejante (A1) y sin agente complejante (A2), en el que la cantidad total de impurezas ópticamente inactivas está seleccionada entre ácido propiónico, ácido fórmico, ácido glicólico, ácido láctico, glutamato, alanina y ácido nitrilotriacético (NTA) y sus respectivas sales de metales alcalinos está en el intervalo de 0,1 al 5% en peso, referido al agente complejante (A), y en el que los agentes complejantes (A1) y (A2) se neutralizan parcialmente con álcali.
Abstract:
The present invention is directed towards mixtures comprising (A) 90 to 99.999 % by weight of racemic methyl glycine diacetic acid (MGDA) or of MGDA with predominantly the L-isomer in an enantiomeric excess of up to 9.5% or their respec- tive mono-, di- or trialkali metal or mono-, di- or triammonium salts, and (B) in total 0.001 to 10 % by weight of the diacetic acid derivative of aspartate as free acid or as mono-, di-, tri- or tetraalkali metal salt or as mono-, di-, tri- or tetraammonium salt, percentages referring to the sum from (A) and (B).