C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
403/80
C08J 9/16 (2006.01) C08J 9/00 (2006.01) C08J 9/18 (2006.01) C08J 9/22 (2006.01) C08J 9/228 (2006.01) C08L 27/24 (2006.01)
Patent
CA 1281848
Abstract of the Disclosure Pellets of a chlorinated vinyl chloride resin composition comprising inorganic materials, a solvent and a blowing agent; a pre-expanded particle of a chlorinated vinyl chloride resin comprising inorganic materials and a solvent and a process for preparing the pre-expanded particle of the chlorinated vinyl chloride resin containing inorganic materials which comprises kneading a chlorinated vinyl chloride resin, inorganic materials and a solvent, pelletizing the kneaded mixture, impregnating a physical blowing agent into the resulting pellets and pre-expanding the pellets. The present invention makes it possible to be contained a large amount of inorganic materials in a chlorinated vinyl chloride resin by forming a uniform gel phase of the chlorinated vinyl chloride resin and the solvent and wrapping inorganic materials in the gel phase. A foamed article produced by employing pre-expanded particles of the chlorinated vinyl chloride resin containing inorganic materials has an excellent heat resistance, i.e. the foamed article generates little heat, produces little smoke and little poison gas and is hardly strained and cracked at burning, and further, has a large dimensional stability.
543705
Kimura Yoshihiro
Shimazu Hisao
Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
Kimura Yoshihiro
Osler Hoskin & Harcourt Llp
Shimazu Hisao
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