Title:
スチレン系樹脂押出発泡体およびその製造方法
Document Type and Number:
Japanese Patent JP4266305
Kind Code:
B2
Abstract:
The present invention relates to a method for producing an extruded styrene resin foam comprising the steps of heating and melting a styrene resin, adding a blowing agent to the styrene resin, and extrusion-foaming the resultant into a lower pressure region through a die, wherein the blowing agent comprises 1) 2 to 6 parts by weight of one or more saturated hydrocarbons selected from the group consisting of saturated hydrocarbons having 3 to 4 carbon atoms, 2) 1 to 6 parts by weight of at least one ether selected from the group consisting of dimethyl ether, methyl ethyl ether and diethyl ether, and 3) 0 to 3 parts by weight of at least one member selected from the group consisting of water and alcohols having 1 to 4 carbon atoms, based on 100 parts by weight of the styrene resin, and wherein the pressure drop in a die slit portion is not less than 4MPa and the resin residence time in the die slit portion is not more than 0.4 seconds.
Inventors:
Takahiro Hayashi
Kenkichi Tanaka
Hiroshi Kobayashi
Atsushi Fukuzawa
Shunji Kurihara
Kenkichi Tanaka
Hiroshi Kobayashi
Atsushi Fukuzawa
Shunji Kurihara
Application Number:
JP2002553403A
Publication Date:
May 20, 2009
Filing Date:
December 21, 2001
Export Citation:
Assignee:
Kaneka Corporation
International Classes:
C08J9/14; B29C47/00; C08J9/00; C08K3/38; C08K5/3472; C08K5/3492; C08K5/49; C08L25/00; C09K21/14; B29K25/00; B29K105/04
Domestic Patent References:
| JP3109445A |
Attorney, Agent or Firm:
Sota Asahina
Kei Saki
Fumio Akiyama
Hiromu Tanaka
Kei Saki
Fumio Akiyama
Hiromu Tanaka
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