Process for preparing biodegradable resin foam
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United States of America Patent
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-
May 3, 1994
Grant Date -
N/A
app pub date -
Aug 13, 1993
filing date -
Sep 7, 1992
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A process for producing a biodegradable resin foam, having the steps of mixing a starch polymer containing from 5% by weight to 30% by weight of water, a vinyl alcohol resin containing from 5% by weight to 30% by weight of water, a nonionic surfactant, an inorganic or organic filler, and optionally a thickening agent; optionally adjusting the water content of the mixture, to prepare a composition having from 5% by weight to 30% by weight of water on the whole, based on total weight of the composition; melting and expanding it to prepare a foam, which has a low density and fine closed cells, and shows a good surface condition in a molded body.
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Cited Art Landscape
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