一种聚醚酯多元醇的合成工艺及设备
By designing a series reaction system of transesterification reactor, deep esterification reactor and polycondensation reactor, the problem of large-scale preparation of polyether ester polyols was solved, and low-cost spandex production was achieved.
Patent Information
- Application Number
- CN202310808221.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-07-03
- Publication Date
- 2026-07-17
- Estimated Expiration
- 2043-07-03
AI Technical Summary
The lack of existing technologies for the large-scale industrial preparation of polyether ester polyols limits their application in the spandex industry, resulting in high production costs.
A process and equipment for synthesizing polyether ester polyols are provided. By designing a series of transesterification esterification reactors, deep esterification reactors and polycondensation reactors, combined with a catalyst tank and a vacuum system, a staged esterification and polycondensation reaction is carried out to prepare polyether ester polyols with aromatic group-polyether block structure.
This has enabled the large-scale industrial production of polyether ester polyols, reducing the production cost of spandex and meeting the elastic recovery performance and modulus requirements of spandex.
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Figure CN116808947B_ABST
Abstract
Citation Information
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