Method of controlling the pyrolysis rate of a plastic foam

Details Method of controlling the pyrolysis rate of a plastic foam Method of controlling the pyrolysis rate of a plastic foam

1989-10-25

1991-07-30

Foelak, Morton

Metal founding

Process

Shaping a forming surface

164 45, 521 57, 521918, 521919, B22C 904

Patent

active

050352750

ABSTRACT:
The thermal shrinkage and pyrolysis rate of plastic foam moldings are successfully controlled by coating the expandable plastic beads used in the preparation of the moldings with varying amounts of substantially water-insoluble inorganic siliceous materials. The plastic foam moldings are useful as patterns in an evaporative casting process, wherein the molding is vaporized and replaced by molten metal.

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DE 2,334,854, Chem. Abstracts 82, 172188b.

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