Expandable composition and process for extruded thermoplastic fo

Details Expandable composition and process for extruded thermoplastic fo Expandable composition and process for extruded thermoplastic fo

1994-09-19

1995-10-31

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

264 50, 264DIG5, 521 97, 521 98, 521142, 521910, C08J 912

Patent

active

054629748

ABSTRACT:
An expandable thermoplastic composition is disclosed for extrusion foaming wherein the composition comprises a polyethylene resin; a blowing agent, which is either ethane or a blend of carbon dioxide and either normal butane, isobutane, propane, ethane, or a mixture of any two or more of these hydrocarbons in admixture with the resin in a ratio of about one part blowing agent to about 10 parts resin; nucleation agent in an amount of from about 0.05 to 0.5 kg per 100 kg of the resin; and glycerol monostearate aging modifier in an amount of from about 0.5 to 5 kg per 100 kg of the resin. A process for extrusion foaming of the composition is also disclosed.

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