Title:
STYRENE RESIN COMPOSITION, FOAM SHEET AND MOLDED BODY USING SAME
Document Type and Number:
WIPO Patent Application WO/2017/022498
Kind Code:
A1
Abstract:
Provided is a styrene resin composition which contains a polystyrene resin (A), a polyphenylene ether resin (B) and a foaming agent (C), and which is characterized in that: the polystyrene resin (A) is a hyperbranched resin that has a structure derived from a styrene monomer (a2) and a structure derived from a methacrylic acid (a3); (1) the polystyrene resin (A) has a weight average molecular weight of 200,000-700,000 as determined by a GPC-MALS method; and (2) the slope in the molecular weight range of 250,000-10,000,000 in a double logarithmic chart taking the molecular weight determined by a GPC-MALS method as abscissas and the radius of inertia as ordinate is 0.30-0.45. This styrene resin composition enables the adequate achievement of a foam sheet which has moldability, heat resistance, oil resistance and strength in a balanced manner, while having good productivity. Also provided are: a foam sheet which uses this styrene resin composition; and a molded body.
Inventors:
FUJIHIRA MAMORU (JP)
OOTSUBO TAKANORI (JP)
OOTSUBO TAKANORI (JP)
Application Number:
PCT/JP2016/071380
Publication Date:
February 09, 2017
Filing Date:
July 21, 2016
Export Citation:
Assignee:
DAINIPPON INK & CHEMICALS (JP)
International Classes:
C08J9/04; C08F290/06; C08G65/332; C08L25/08; C08L71/12
Foreign References:
| JP2011246588A | 2011-12-08 | |||
| JP2014208773A | 2014-11-06 | |||
| JP2003012847A | 2003-01-15 | |||
| JP2007284591A | 2007-11-01 |
Attorney, Agent or Firm:
KONO Michihiro (JP)
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