Title:
PREPARATION METHOD FOR POLY(CARBONATE-ETHER)POLYOL
Document Type and Number:
WIPO Patent Application WO/2017/020470
Kind Code:
A1
Abstract:
Provided is a preparation method for a poly(carbonate-ether)polyol, comprising: reacting a carboxylic acid with an acidity constant of 0.2-4 with an epoxide to obtain an intermediate product, and polymerizing the intermediate product with carbon dioxide under the effect of a rare earth-doped double metal cyanide of Zn3[Co(CN)6]2 to obtain a poly(carbonate-ether)polyol. In the preparation method for a poly(carbonate-ether)polyol provided by the present invention, a carboxylic acid with an appropriate acidity constant is used as an initiator; the carboxylic acid is used to activate the epoxide; and polyethers of different molecular weights generated in situ by activation are used as chain transfer agents for participating in the polymerization of carbon dioxide and the epoxide under the effect of the rare earth-doped double metal cyanide of Zn3[Co(CN)6]2. The preparation method for a poly(carbonate-ether)polyol has a relatively short reaction time and a low content of a propylene carbonate by-product in the product.
More Like This:
Inventors:
LIU SHUNJIE (CN)
QIN YUSHENG (CN)
WANG XIANHONG (CN)
QIAO LIJUN (CN)
WANG FOSONG (CN)
QIN YUSHENG (CN)
WANG XIANHONG (CN)
QIAO LIJUN (CN)
WANG FOSONG (CN)
Application Number:
PCT/CN2015/096978
Publication Date:
February 09, 2017
Filing Date:
December 10, 2015
Export Citation:
Assignee:
CHANGCHUN INST APPLIED CHEMISTRY CAS (CN)
International Classes:
C08G64/34
Foreign References:
| CN105061746A | 2015-11-18 | |||
| CN102617844A | 2012-08-01 | |||
| CN102432857A | 2012-05-02 | |||
| US4826887A | 1989-05-02 | |||
| US20080051554A1 | 2008-02-28 |
Attorney, Agent or Firm:
CHINA SCIENCE PATENT & TRADEMARK AGENT LTD. (CN)
Download PDF: