Title:
COMPOSITE RESIN PARTICLES AND FOAMABLE COMPOSITE RESIN PARTICLES, PRE-FOAMED RESIN PARTICLES, AND MOLDED FOAM BODY USING SAME
Document Type and Number:
WIPO Patent Application WO/2014/157647
Kind Code:
A1
Abstract:
Provided are composite resin particles that comprise a polypropylene resin and a polystyrene resin. The polystyrene resin content with respect to 100 parts by mass of the polypropylene resin is 100-400 parts by mass. In a surface layer section of the composite resin particles, polystyrene resin having a particle size of 0.3 µm or less is dispersed in the polypropylene resin. In the outermost surface layer section of the composite resin particles, polystyrene resin having a particle size of 0.3-1.5 µm is dispersed in the polypropylene resin. The ratio of absorbance originating from the polystyrene resin and absorbance originating from the polypropylene resin that is obtained from the infrared absorption spectrum of the surface of the composite resin particles is 0.5-2.5.
Inventors:
OZAWA MASAHIKO (JP)
Application Number:
PCT/JP2014/059224
Publication Date:
October 02, 2014
Filing Date:
March 28, 2014
Export Citation:
Assignee:
SEKISUI PLASTICS (JP)
International Classes:
C08J9/18; C08J9/232
Domestic Patent References:
| WO2007099833A1 | 2007-09-07 | |||
| WO2008117504A1 | 2008-10-02 |
Foreign References:
| JP2011074152A | 2011-04-14 | |||
| JP2010222546A | 2010-10-07 | |||
| JP2001302837A | 2001-10-31 | |||
| JP2010270284A | 2010-12-02 |
Other References:
"Preformed Cellular Plastics Thermal Insulation Materials", JIS A 9511, 1995
Attorney, Agent or Firm:
NOGAWA, Shintaro et al. (JP)
Shintaro Nogawa (JP)
Shintaro Nogawa (JP)
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