Extrusion process of polypropylene foam

C - Chemistry – Metallurgy – 08 – J

Patent

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18/664

C08J 9/14 (2006.01)

Patent

CA 1190013

ABSTRACT OF THE DISCLOSURE A process for producing a highly expanded polypropylene foam uniform in the viscosity at the extrusion foaming, improved in melt strength and free from unevenness of surface by using a polypropylene resin having a specified melt tension.

403288

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