Title:
THERMALLY EXPANDABLE MICROSPHERES COATED WITH CARBON DIOXIDE AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/103330
Kind Code:
A1
Abstract:
The present invention provides a preparation method for thermally expandable microspheres coated with carbon dioxide, comprising the following steps: A) mixing a beta-hydroxyethyl methacrylate, a glycidyl methacrylate, a carbon dioxide absorbent, a crosslinking agent and water to obtain a water phase, wherein the carbon dioxide absorbent is a triethanolamine, and the cross-linking agent is a mixture of one or two of a 1,4-butanediol dimethylacrylate and a 1,3-butanediol dimethylacrylate in any proportion; B) mixing a paraffin oil and a Span 60 emulsifier to obtain an oil phase; C) evacuating a reactor and filling the reactor with carbon dioxide, adding the water phase into the reactor, and keeping the pressure of carbon dioxide at 1-6 atm, so that the triethanolamine may fully absorb carbon dioxide; and D) adding the oil phase into the reactor, keeping the pressure of carbon dioxide at 1-6 atm, fully stirring, and adding an aqueous solution of ammonium persulfate or potassium persulfate at 0°C to react to obtain the thermally expandable microspheres coated with carbon dioxide.
More Like This:
| WO/2005/078016 | ROOM TEMPERATURE STABLE AGAROSE SOLUTIONS |
Inventors:
CHEN HAIXIAN (CN)
TANG HUADONG (CN)
WU CHAO (CN)
TANG HUADONG (CN)
WU CHAO (CN)
Application Number:
PCT/CN2020/076804
Publication Date:
June 03, 2021
Filing Date:
February 26, 2020
Export Citation:
Assignee:
ZHEJIANG HAIHONG HOLDING GROUP CO LTD (CN)
International Classes:
C08J9/16
Foreign References:
| CN107286367A | 2017-10-24 | |||
| US20180186960A1 | 2018-07-05 | |||
| EP1964903A1 | 2008-09-03 | |||
| US6984347B2 | 2006-01-10 | |||
| US7252882B2 | 2007-08-07 | |||
| JPH11300201A | 1999-11-02 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
Download PDF:
Previous Patent: STATIONERY PACKAGING BOX
Next Patent: NETWORK RESOURCE SCHEDULING METHOD AND DEVICE, STORAGE MEDIUM, AND MOBILE TERMINAL
Next Patent: NETWORK RESOURCE SCHEDULING METHOD AND DEVICE, STORAGE MEDIUM, AND MOBILE TERMINAL