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Title:
STYRENIC RESIN COMPOSITION FOR FOAMED SHEET, FOAMED SHEET, AND FOAMED CONTAINER
Document Type and Number:
Japanese Patent JP2009263512
Kind Code:
A
Abstract:

To provide a styrenic resin composition for a foamed sheet allowing expansion of thermoforming conditions (reduction in a forming area or heating time) while keeping conventional mechanical strength of a foamed sheet used for molding a container and the like, and to provide a foamed sheet composed of the styrenic resin composition and a foamed container.

The styrenic resin composition for a foamed sheet contains a styrenic resin and a foaming agent. The styrenic resin includes a resin obtained by copolymerizing a multiply branched macromonomer (a1) having a double bond on the branch end, a styrenic monomer (a2), and an acrylic ester (a3) together while setting a using ratio (a2)/(a3) of the styrenic monomer (a2) to the acrylic ester (a3) to be from 98/2 to 85/15 (a mass ratio). The foamed sheet obtained from the above styrenic resin composition and the foamed container obtained by postforming of the foamed sheet are also provided.


Inventors:
NONOKAWA DAIGO
FUKUKITA TAKESHI
SAITO KATSUHIRO
Application Number:
JP2008115245A
Publication Date:
November 12, 2009
Filing Date:
April 25, 2008
Export Citation:
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Assignee:
DAINIPPON INK & CHEMICALS
International Classes:
C08J9/12; B65D1/00; C08F290/00; C08L25/00; C08L55/00
Domestic Patent References:
JP2007291264A2007-11-08
JP2007284591A2007-11-01
JP2006124498A2006-05-18
JP2000248104A2000-09-12
JP2000212358A2000-08-02
JP2005281405A2005-10-13
Attorney, Agent or Firm:
Kono Tsuyo