A method for co-producing amino-terminated polyether and diol compounds
During the preparation of terminal amino polyethers, the oxyalkylene olefins are carried out in a ring-opening polymerization reaction with C3-C4 alkylene glycol and/or water, and the diol compounds are isolated, which solves the problem of low selectivity of primary amino polyether amines in the prior art, and achieves a more efficient and economical production process and product quality.
CN115894260BActive Publication Date: 2025-03-25HONGBAOLI GRP CO LTD +2
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Patent Information
- Application Number
- CN202211624015.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-12-15
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2042-12-15
AI Technical Summary
Technical Problem
In the prior art, when preparing small-molecular terminal amino polyethers, primary amines are not selective, resulting in low product activity and high production cost.
Method used
Mixture A is prepared by performing a ring-opening polymerization reaction of oxyalkylene with C3-C4 alkylene glycol and/or water under the action of a catalyst, and the diol compounds are separated therefrom to obtain Mixture B, which is used to prepare terminal amino polyethers.
Benefits of technology
The primary amine selectivity of small-molecule terminal amino polyethers is improved, a more economical and feasible production process is achieved, and high-quality glycol compounds and terminal amino polyethers are obtained.
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Abstract
The present invention discloses a method for co-producing amino-terminated polyether and diol compounds, comprising the following steps: subjecting olefin oxide and component I to a ring-opening polymerization reaction under the action of a catalyst to obtain a mixture A; the component I is C3-C4 alkylene glycol and / or water; after separating all or part of the diol compounds from the mixture A, a mixture B is obtained; the number average molecular weight of the mixture B is 200-335; and the amino-terminated polyether is prepared using the mixture B. The present invention provides a more economical and feasible production route for amino-terminated polyethers, and the production method can not only simply and efficiently prepare primary amine-type small-molecule amino-terminated polyethers, but also co-produce diol compounds, and has high economic efficiency and application value.
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