The present invention relates to a process for preparing at least one alkoxylate, which comprises bringing at least one alkylene oxide selected from the group consisting of ethylene oxide, propylene oxide, butylene oxide, pentylene oxide and decene oxide into contact with at least one starter compound in the presence of at least one double metal cyanide compound, with the reaction being carried out at a temperature of from 130.degree. C. to 155.degree. C., to the alkoxylates, in particular ethox...

Alkoxylated alcohols containing no insoluble matter which would prevent the spray application of such materials are obtained by reacting an alcohol and epoxide in the presence of a catalytic amount of a calcined hydrotalcite catalyst to form a crude alkoxylated product. The crude product is then passed through silica gel to remove insoluble by-products.

The invention relates to a process for simultaneously performing two chemically successive reactions in a loop reactor, specifically reaction I) an optionally catalyzed equilibrium reaction between high-boiling liquid reactants, in which essentially one high boiler is formed as an intermediate and at least one low boiler as a by-product, and reaction II) a substantially diffusion-controlled reaction in which the liquid intermediate is reacted with at least one gaseous reactant to give the end pr...

A process for preparing an alkoxylation catalyst in which the catalyst pre-mix is formed by admixing an alkoxylated alcohol with a calcium containing compound which is dispersible in the alkoxylated alcohol, an inorganic acid and an aluminum trialkoxide, the pre-mix being heated to a temperature and for a time sufficient to effect at least partial exchange reaction betweeen the alkoxide groups of the aluminum alkoxide and the hydroxyl groups of the alkoxylated alcohol. There is also disclosed an...

Alkylene oxide adducts of higher alkanols are prepared by a process which comprises contacting and reacting an alkylene oxide reactant comprising one or more C.sub.2 to C.sub.4 vicinal alkylene oxides with an alkanol reactant comprising one or more C.sub.6 to C.sub.30 alkanols in the presence of a catalytically effective amount of a catalyst which combines (i) one or more sulfur-containing acids with (ii) one or more aluminum compounds selected from the group consisting of aluminum alcoholates a...

A method is disclosed wherein t-butanol is reacted with methanol in a reaction zone in the presence of a catalyst to provide methyl-tert-butyl ether and the improvement of accomplishing the reaction in one-step which comprises: a. using a catalyst selected from the group consisting of acidic aluminas, and crystalline aluminosilicate faujasite-type zeolites, particularly dealuminized Y-type zeolites; b. continuously contacting said t-butanol and methanol in a molar amount of about 0.1 to 10 moles...

A method for precisely producing a polyether having a relatively high molecular weight by means of a double metal cyanide complex catalyst is provided. A method for continuously producing a polyether, which comprises ring opening addition polymerization of an alkylene oxide in the presence of a double metal cyanide complex catalyst, wherein substantially no vapor phase part is present in a reactor.

The present invention provides an alkoxylation solid catalyst with which an alkylene oxide adduct having a narrow adduct distribution can be produced while inhibiting formation of high molecular weight polyalkylene glycol having a molecular weight of about tens of thousands as a by-product. The alkoxylation catalyst comprises a metal oxide containing magnesium, aluminum, and at least one metal selected from the metals that belong to group VIA, group VIIA, and group VIII as a third component. The...

A polyoxyalkylene monoalkyl ether which gives, in gel permeation chromatography, a chromatogram which satisfies a relation expressed by an equation: S.sub.1 /S.sub.0.ltoreq.0.15, wherein S.sub.1 represents the area under a portion of the chromatogram from the start of elution to the earliest elution time when the intensity of the refractive index has a value of L/3, L representing the shortest distance between the greatest maximum point of the intensity of the refractive index and the base line ...

Nonionic surfactants containing a narrow molecular weight distribution is obtained by the use of a magnesium-containing catalyst which comprises reacting a reactive hydrogen compound selected from the group consisting of monohydric alcohols having from about 6 to 30 carbon atoms with an alkylene oxide having from 2-4 carbon atoms at a temperature at which the reaction proceeds in the presence of at least a catalytic amount of a particular magnesium catalyst containing phosphorus.