C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
403/64
C08J 9/14 (2006.01) C08J 9/00 (2006.01) C08L 25/12 (2006.01) C08L 25/16 (2006.01) C08L 27/06 (2006.01)
Patent
CA 1232400
ABSTRACT OF THE DISCLOSURE The invention provides a novel foamable vinyl chloride- based resin composition suitable for shaping into a cellular foamed body of high expansion and with good heat stability by extrusion using an extruder machine, in the cylinder of which the resin compositon is heated and softened and then uniformly impregnated with a volatilizable blowing agent such as a low-boiling aliphatic hydrocarbon compound before extrusion out of the extruder. The most characteristic com- ponent in the foamable resin composition is an .alpha.-methylsty- rene-based resin which is formulated in an amount from 10 to 100 parts by weight per 100 parts by weight of the vinyl chloride-based resin as the main component together with a cell-uniformizing agent which is a decomposable blowing agent or a fine powdery material and a foam-conditioning agent which is an acrylic resin or a styrene-based resin.
470613
Eguchi Yoshitugu
Matsumoto Osamu
Gowling Lafleur Henderson Llp
Shin-Etsu Chemical Co. Ltd.
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