Title:
PROCESS AND SYSTEM FOR PRODUCING LOW-ODOR POLYETHER POLYOL
Document Type and Number:
WIPO Patent Application WO/2020/253297
Kind Code:
A1
Abstract:
The present invention relates to the technical field of the production of polyether polyols, and provided is a process for producing a low-odor polyether polyol, the process comprising the following steps: an initial polymerization reaction step, involving: adding an initiator and an alkaline catalyst into a reaction container, and then inputting an epoxy olefin into the reaction container for a polymerization reaction to obtain a mixed material; a circulating distribution polymerization step, involving: taking the mixed material, outputting same, splitting same and then spraying same into the reaction container at a high speed, circulating the above operations while inputting the epoxy olefin and maintaining a rotation speed of 90-105 r/min for stirring the mixed material that has been sprayed into the reaction container, continuing to proceed with the polymerization reaction, and curing same to obtain a crude polyether polyol; and a refining step, involving: taking the crude polyether polyol and subjecting same to a neutralization or dilution treatment to obtain a mixed solution of the crude polyether polyol, then aggregating a mixed solution stream by means of a hydrophilic medium, setting same and separating same to obtain the low-odor polyether polyol. The production process of the present invention has the advantages of a short processing time, a high yield and a low VOC content.
Inventors:
LI ZHIJUN (CN)
WANG FENG (CN)
LI YUBO (CN)
WANG FENG (CN)
LI YUBO (CN)
Application Number:
PCT/CN2020/080707
Publication Date:
December 24, 2020
Filing Date:
March 23, 2020
Export Citation:
Assignee:
JIAHUA SCIENCE & TECH DEVELOPMENT SHANGHAI LTD (CN)
International Classes:
B01J10/00; C08G65/28; B01J19/26; C07C41/03; C08G18/48; C08G65/30
Foreign References:
| CN110358070A | 2019-10-22 | |||
| CN103384692A | 2013-11-06 | |||
| CN109575268A | 2019-04-05 | |||
| CN204865845U | 2015-12-16 | |||
| CN109400867A | 2019-03-01 | |||
| CN1244137A | 2000-02-09 | |||
| TW201306936A | 2013-02-16 | |||
| US20090326283A1 | 2009-12-31 | |||
| US5159092A | 1992-10-27 | |||
| CN102585199A | 2012-07-18 | |||
| CN1242018A | 2000-01-19 | |||
| CN108148192A | 2018-06-12 | |||
| CN108059717A | 2018-05-22 | |||
| CN109438691A | 2019-03-08 |
Other References:
See also references of EP 3964538A4
Attorney, Agent or Firm:
SUNSHINE INTELLECTUAL PROPERTY INTERNATIONAL CO., LTD. (CN)
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