Expandable polystyrene composition and process

Details Expandable polystyrene composition and process Expandable polystyrene composition and process

1983-04-29

1984-05-15

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

427222, 521 93, C08J 922

Patent

active

044489005

ABSTRACT:
A composition and process for reducing the adhesion of expandable polystyrene beads impregnated with a blowing agent such as pentane. The composition comprises effective amounts of magnesium stearate and zinc stearate respectively. The composition is added to the polystyrene in an apparatus such as a tumble blender prior to pre-expansion of the impregnated polystyrene beads.

REFERENCES:
patent: 3560414 (1971-02-01), Miskel, Jr. et al.

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