Title:
METHOD FOR MANUFACTURING EXPANDABLE MICROSPHERES, AND EXPANDABLE MICROSPHERES
Document Type and Number:
WIPO Patent Application WO/2016/148173
Kind Code:
A1
Abstract:
To provide: a method for manufacturing expandable microspheres with which the start of a polymerization reaction in an oil phase at an unintended time such as while a dispersion is being prepared or prior to the start of polymerization is suppressed, the intended polymerization reaction in an oil phase is not hindered, and properties such as expansion ratio are exceptional; and expandable microspheres having excellent properties. A method for manufacturing expandable microspheres in which a foaming agent is sealed in the outer shell of a produced polymer and in which the maximum expansion ratio is 5 or higher, the method being characterized in that at least the foaming agent, a polymerizable monomer, a polymerization initiator, and a water-soluble polymerization inhibitor or a non-water-soluble polymerization inhibitor are suspended in an aqueous dispersion medium whereupon suspension polymerization is performed in the presence of the water-soluble polymerization inhibitor or the non-water-soluble polymerization inhibitor.
Inventors:
ENDO SHUNZO (JP)
EJIRI TETSUO (JP)
SATAKE YOSHIKATSU (JP)
SHIBATA SHUSAKU (JP)
EJIRI TETSUO (JP)
SATAKE YOSHIKATSU (JP)
SHIBATA SHUSAKU (JP)
Application Number:
PCT/JP2016/058263
Publication Date:
September 22, 2016
Filing Date:
March 16, 2016
Export Citation:
Assignee:
KUREHA CORP (JP)
International Classes:
B01J13/18; C08F2/18; C08F2/40
Foreign References:
| JPH11209504A | 1999-08-03 | |||
| JP2011016884A | 2011-01-27 | |||
| JP2011074282A | 2011-04-14 | |||
| JP2003048915A | 2003-02-21 | |||
| JPH03258807A | 1991-11-19 | |||
| JPS52102391A | 1977-08-27 | |||
| JPH0673106A | 1994-03-15 |
Attorney, Agent or Firm:
WATANABE KAORU (JP)
Kaoru Watanabe (JP)
Kaoru Watanabe (JP)
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