Preparation process of amine terminated polyether

Abstract

The invention belongs to the technical field of polymer materials and provides a preparation process of amine terminated polyether. In the process, polyether polyol with a number-average molecular weight of more than 100 is used as a raw material, and polyetheramine is prepared by catalytic reduction and amination in the presence of hydrogen, an aminating agent and a skeleton nickel catalyst, wherein the skeleton nickel catalyst comprises the following components by mass percent: 80-95% of metal nickel, 5-20% of metal aluminum and 0.5-5% of one, two or three of chromium, iron, copper or zinc; and the skeleton nickel catalyst and the aminating agent can be circularly applied after being processed. The whole preparation process has the advantages of good route selectivity, high conversion rate, low environmental pollution, and convenience in posttreatment.

Description

technical field

[0001] The invention belongs to the field of polymer materials and relates to a preparation process of polymer amino-terminated polyether. Background technique

[0002] Amino-terminated polyether is a kind of compound with soft polyether skeleton and terminal end capped with amino group or amino group. Most of these compounds are obtained by chemically treating terminal hydroxyl groups with corresponding polyether polyols as raw materials. According to the structure of the hydrocarbon group connected to the terminal amino group, it can be divided into two types: aromatic and aliphatic. At present, amino-terminated polyether is used as curing agent, adhesive, polyurethane and spray polyurea elastomer (SPUA for short) raw material of epoxy resin, in anticorrosion, pipeline, construction, ship, water conservancy, transportation, machinery, It has been widely used in fields such as mine wear resistance. There are three main synthesis methods for amino-terminate...