Pre-expanded particle of polyolefin and process for...

Details Pre-expanded particle of polyolefin and process for... Pre-expanded particle of polyolefin and process for...

C - Chemistry, Metallurgy

08

L

403/77, 403/80

C08L 23/08 (2006.01) C08J 9/18 (2006.01)

Patent

CA 1222100

Abstract of the Disclosure A pre-expanded particle suitable for foaming in a mold comprising polyolefin which has a characteristic property that an inclination of slope line obtained on a graph when logarithmic values of melt tension of the polyolefin are plotted as ordinate and reciprocals of absolute temperature at which the melt tension is measured are plotted as abscissa is less than 1,500 is provided. A foamed article produced from the pre- expanded particles has an excellent appearance, a flat surface and good mechanical strength, and is useful for wrapping material, insulating material, a container or a fender of cars. A process for preparing the above-mentioned pre-expanded particles is also disclosed.

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