Perlite filler coated with polydimethylsiloxane
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United States of America Patent
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-
Jan 15, 1980
Issued Date -
N/A
app pub date -
Mar 14, 1978
filing date -
Oct 21, 1976
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Expanded perlite is coated with polysiloxane, the coating dried, and subsequently strengthened by heating to form an attrition-resistant, non-porous, particulate filler suitable for inclusion in polymeric materials to reduce their bulk density.
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