Title:
REACTION SYSTEM FOR PREPARING POLYMER POLYOL AND METHOD FOR PREPARING POLYMER POLYOL
Document Type and Number:
WIPO Patent Application WO/2021/196226
Kind Code:
A1
Abstract:
A reaction system for preparing polymer polyol and a method for preparing polymer polyol. The reaction system comprises a reactor, a first circulation unit, a second circulation unit, and a flow direction switching unit, wherein the reaction cavity of the reactor is divided into a first reaction chamber and a second reaction chamber by a partition plate, and the top of the partition plate is provided with an overflow port to communicate the first reaction chamber and the second reaction chamber with each other; the first circulation unit enables the material in the first reaction chamber to circulate between the discharge port of the first reaction chamber and the feed port of the first reaction chamber; the second circulation unit enables the material in the second reaction chamber to circulate between the discharge port of the second reaction chamber and the feed port of the second reaction chamber. The polymer polyol prepared by the reaction system has a low-viscosity effect, and by using the polymer polyol prepared by the method, a polyurethane foam having excellent mechanical properties and high hardness can be obtained.
Inventors:
LI FUGUO (CN)
LIU YANG (CN)
JIANG MING (CN)
QIN CHENGQUN (CN)
FANG SHIQIANG (CN)
LIU YANG (CN)
JIANG MING (CN)
QIN CHENGQUN (CN)
FANG SHIQIANG (CN)
Application Number:
PCT/CN2020/083353
Publication Date:
October 07, 2021
Filing Date:
April 03, 2020
Export Citation:
Assignee:
WANHUA CHEMICAL GROUP CO LTD (CN)
International Classes:
C08F212/08; B01J19/24; C08F220/44; C08F283/06; C08G18/32; C08G18/63; C08G18/65; C08G101/00
Domestic Patent References:
| WO2018052771A1 | 2018-03-22 |
Foreign References:
| CN103923270A | 2014-07-16 | |||
| CN109351317A | 2019-02-19 | |||
| CN1796427A | 2006-07-05 | |||
| CN104995227A | 2015-10-21 | |||
| CN101429321A | 2009-05-13 | |||
| US6013731A | 2000-01-11 | |||
| EP0640633A1 | 1995-03-01 | |||
| US5268418A | 1993-12-07 | |||
| EP0365986A2 | 1990-05-02 | |||
| CN1656136A | 2005-08-17 | |||
| CN105949408A | 2016-09-21 | |||
| CN107090064A | 2017-08-25 | |||
| CN106519148A | 2017-03-22 | |||
| CN201310076219A | 2013-03-11 |
Attorney, Agent or Firm:
SINO-CREATIVITY INTELLECTUAL PROPERTY LAW FIRM (CN)
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