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
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHENGZHOU ZHONGYUAN SPANDEX ENG TECH CO LTD
- Filing Date
- 2023-07-03
- Publication Date
- 2026-07-17
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.
Smart Images
Figure CN116808947B_ABST