Title:
FOAMABLE THERMOPLASTIC RESIN COMPOSITION AND FOAM
Document Type and Number:
Japanese Patent JP3159791
Kind Code:
B2
Abstract:
PURPOSE: To provide the subject composition which can give a highly expanded foam without detriment to its heat resistance by using clean carbon dioxide and to provide the subject foam made of this composition.
CONSTITUTION: This composition is prepared by dissolving carbon dioxide in a resin composition comprising at least one thermoplastic resin selected between an olefinic resin and a styrenic resin and a crosslinked resin prepared by crosslinking a thermoplastic resin having a solubility constant of 0.4 or above for carbon dioxide. The solubility constant (k) is represented in the formula: C=kP wherein C is the concentration [cc/g] of the gas dissolved in the molten resin, (k) is the solubility constant [cc (STP)/g.atm], and P is the pressure [atm]. The objective foam is prepared by foaming this composition.
Inventors:
Hitoshi Shirato
Hiroyuki Kurio
Hiroyuki Kurio
Application Number:
JP19072692A
Publication Date:
April 23, 2001
Filing Date:
July 17, 1992
Export Citation:
Assignee:
Sekisui Chemical Co.,Ltd.
International Classes:
B29C47/00; C08J9/12; B29K105/04; (IPC1-7): C08J9/12