A kind of high flash point quaternized polyether block silicone oil and its preparation method

Abstract

The invention provides a method for preparing high-flash point quaternized polyether block silicone oil, which uses epoxy polyether silicone oil and tertiary amine polyether as raw materials, and uses high-flash point alcohol solvents as solubilizers, which can replace low-flash point isotropic Propanol undergoes amination ring-opening reaction to obtain polyether polysiloxane copolymer silicone oil with terminal quaternary ammonium salt structure in one step. The high-flash point solubilizer is selected from alcohol / ether solvents with strong solvency. Its structure contains lipophilic alkyl segments and hydrophilic hydroxyl / ether segments, which can dissolve hydrophobic organosilicon compounds. It can also dissolve hydrophilic tertiary amine polyether.

Description

A kind of high flash point quaternized polyether block silicone oil and preparation method thereof technical field The present invention relates to the technical field of silicone oil synthesis, more specifically, relate to a kind of high flash point quaternized polyether block A preparation method of silicone oil and a high flash point quaternized polyether block silicone oil prepared by the method. Background technique Patent (US5807956) diepoxy polysiloxane and amine polyether can prepare block polyether silicone oil, compared with traditional The side chain amino silicone oil, the introduction of amino groups in the main chain can improve the hydrophilic properties of the fabric and maintain a certain degree of softness. can. On the other hand, the polyether segment can further obtain better hydrophilic properties. In order to introduce the quaternary ammonium salt structure, further High hydrophilic performance, the patent (WO2009115412) is modified with quate...

AI Technical Summary

Problems solved by technology

Literature (Zhang Qiang, An Qiufeng, Li Xiaolu, etc. Preparation and Application of Hydrophilic Polyether Amino Silicone QPEAS Silicone Emulsion [J]. Printing and Dyeing Auxiliaries, 2018(6).) Using terminal epoxy silicone oil and different molecular weight tertiary amines Polyether reaction can directly obtain quaternary ammonium polyether silicone oil, but this process uses a large amount of isopropanol solvent, which has a low flash point of only 12°C, and there are safety hazards in the process of production, transportation, storage and use, as well as environmental pollution. larger

Even if the isopropanol is removed by vacuum and then replaced with a high-flash point solvent, the safety risk can be reduced in the process of transportation, storage and use, but there are still safety hazards in the production process, and the replacement of the solvent will also increase the production cost

Images