Abstract:
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung eines Polyetherols umfassend die Umsetzung mindestens eines Alkylenoxids mit mindestens einer Starterverbindung in Gegenwart eines Katalysators der allgemeinen Formel (I): M 1 p [M 2 q O n (OH) 2(3-n) ] x sowie die nach einem derartigen Verfahren hergestellten Polyetherole und deren Verwendung für die Polyurethansynthese, als Kraftstoffadditiv oder als Tensid.
Abstract:
Gegenstand der Erfindung sind DMC-Katalysatoren, die zu mindestens 10 Gew.-%, bezogen auf das Gewicht der DMC-Katalysatoren, einer kristallinen Multimetallcyanidverbindung bestehen, deren Röntgendiffraktogramm scharfe Reflexe bei mindestens den d-Werten 11,4 Å ± 0,5 Å; 8,9 Å ± 0,5 Å; 6,3 Å ± 0,5 Å; 5,8 Å ± 0,5 Å; 5,5 Å ± 0,5 Å; 4,5 Å ± 0,5 Å; 4,4 Å ± 0,5 Å; 3,9 Å ± 0,4 Å; 3,7 Å ± 0,4 Å; 3,4 Å ± 0,4 Å aufweist.
Abstract:
Die vorliegende Erfindung betrifft ein Verfahren zur Umsetzung von Epoxiden mit einer Starter-Verbindung in Gegenwart einer Doppelmetallcyanid-Verbindung als Katalysator mit verkürzter Induktionsperiode, wobei die Aktivierung der Doppelmetallcyanid-Verbindung durch Zugabe des Epoxids zu einem Gemisch aus Doppelmetallcyanid-Verbindung und Starterverbindung bei einem Reaktorinnendruck von kleiner als 1 bar erfolgt, sowie die durch ein derartiges Verfahren erhältlichen Polyether selbst.
Abstract:
The invention relates to polymers that can be obtained from 1-butene oxide and from an alcohol while using a double metal cyanide compound as a catalyst, whereby the polyether has a quantity of unsaturated constituents equal to 6 or more mol %. The invention also relates to a method for producing a polyether of this type, and to the use of the inventive polyether as a carrier oil or in a carrier oil formulation, particularly in additive packets for gasolines. The invention additionally relates to carrier oil formulations such as fuels containing an inventive polyether.
Abstract:
The invention relates to a method for the production of a polyetherol, wherein at least one alkylene oxide is reacted with at least one starter compound in the presence of one catalyst of general formula (I): M1p[M2qOn(OH)2(3-n)]x, The invention also relates to polyetherols produced according one inventive method and the use thereof for polyurethane synthesis, as a fuel additive or as a surfactant.
Abstract:
The invention relates to hydraulic fluids, in particular, to brake fluids for motor vehicles, containing between 0.01 and 50 percent by weight of one or more cyclic carboxylic acid esters or cyclic carboxylic acid amides which can support a linear or branched C1 to C20 alkyl group on the nitrogen.
Abstract:
A process for purifying alkoxylated fats by treatment with a solid substance, characterized in that the solid substance used is a mixture of aluminium oxide and a silicate.
Abstract:
The invention relates to a method for producing polyether alcohols by attaching alkylene oxides to H-functional initial substances, using multimetal cyanide compounds as catalysts, characterized by the fact that the multimetal cyanide compound is produced by a method comprising the following steps: a) a metal salt solution is added to a cyano-metal solution at a specific stirring rate e ranging between 0.05 and 10 W/l, preferably between 0.4 and 4W/l, and at a temperature ranging between 0 °C and 100 °C, preferably between 20 °C and 60 °C, during an addition time lasting between 5 and 120 minutes; b) the specific stirring rate e is reduced to between 0.03 and 0.8 W/l while a surface-active substance is added; c) the solution is heated to a maximum temperature of 100 °C, preferably between 55 °C and 75 °C, while being stirred at a specific stirring rate e ranging between 0.03 and 0.8 W/l; d) an additional amount of the metal salt solution is added and stirred at a specific stirring rate e of 0.03 to 0.8 W/l; e) the solid substance is dispersed, e.g. by stirring at an increased specific stirring rate e of > 0.7 W/l or by incorporating a transfer pump circuit comprising a corresponding pump or a dissolver, when the conductivity begins dropping; f) stirring at the specific stirring rate e used in step e) until the conductivity or the pH value remains stable; g) the multimetal cyanide compound is isolated and washed with water; and h) the catalyst is optionally dried.
Abstract:
The invention relates to polymers that can be obtained from 1-butene oxide and from an alcohol while using a double metal cyanide compound as a catalyst, whereby the polyether has a quantity of unsaturated constituents equal to 6 or more mol %. The invention also relates to a method for producing a polyether of this type, and to the use of the inventive polyether as a carrier oil or in a carrier oil formulation, particularly in additive packets for gasolines. The invention additionally relates to carrier oil formulations such as fuels containing an inventive polyether.
Abstract:
The invention relates to hydraulic fluids, in particular, to brake fluids for motor vehicles, containing between 0.01 and 50 percent by weight of one or more cyclic carboxylic acid esters or cyclic carboxylic acid amides which can support a linear or branched C1 to C20 alkyl group on the nitrogen.