A catalyst for the alkoxylation of acetylenic alcohols

Abstract

The invention relates to a catalyst for alkynol oxyalkylation, and aims at providing a catalyst capable of reducing the reaction pressure of the alkynol oxyalkylation. The catalyst comprises the following components in percentage by weight: 85%-100% of fatty amine, 0%-10% of inorganic bases and 0%-10% of lewis acid. The catalyst prepared through the invention is used for an alkynol oxyalkylation process, has the advantage of adding high-dose alkylene oxides for one time, and can enable the reaction to be safely and efficiently carried out at a temperature of 25-125 DEG C and a pressure of of 0.1-1.2 MPa, namely the reaction can also be carried out at normal temperature and pressure, thereby greatly reducing the requirement of the alkynol oxyalkylation on high pressure, enabling the reaction to be carried out under a mild condition and being safer for operating personnel; and on the other hand, the catalyst prepared through the invention saves the electric energy and time needed by pressurization, reduces the requirement of equipment on pressure and greatly increases the production efficiency.

Description

technical field [0001] The invention relates to a catalyst, in particular to a catalyst for alkoxylation of acetylenic alcohols. Background technique [0002] Alkynyl alcohol alkoxylate is a fine chemical product, commonly used in water-based coatings, water-based inks, water-based adhesives, metal processing and extraction, pesticide emulsification and other fields. For example, propynyl alcohol ethoxylate is commonly used in the electroplating industry as a brightener or leveler for nickel plating. [0003] The alkoxylation of acetylenic alcohols is mainly realized through the addition reaction of acetylenic alcohols and alkylene oxide compounds. In the prior art, there are two ways for the alkoxylation of acetylenic alcohols: one is high-pressure method, and epoxy The alkane is pressed into the autoclave that has added the acetylenic alcohol and the catalyst, usually the pressure required for the reaction is 0.7-1.2MPa, and the reaction temperature is 40-150°C; the other...

AI Technical Summary

Problems solved by technology

[0004] The pressure required by the high pressure method is high, which is dangerous to the operator, and the requirements for the reaction vessel are relatively high, that is, the production cost is also increased accordingly; and because the volume of the high pressure vessel is small, limited by the volume of the pressure vessel, the high pressure The method cannot add more alkylene oxides at one time, when more alkylene oxides need to be added, it needs to be added step by step

However, the production efficiency of the solvent method is low, and a large amount of heat is required when the solvent is evaporated, and an evaporation device needs to be added in the process flow to evaporate the solvent, which consumes energy and time; in addition, the product will remain organic solvents, making the preparation The purity of the acetylenic alcohol alkoxylation product is not high, and it cannot be applied in some fields