Method of preparing an exfoliated vermiculite for the manufacture of finished product
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United States of America Patent
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Mar 9, 1999
Grant Date -
N/A
app pub date -
Jul 28, 1997
filing date -
Oct 31, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of preparing particles of an exfoliated vermiculite for the manufacture of a finished product, such as a particle board, includes the steps of, if necessary, chemically modifying the vermiculite by impregnating the vermiculite with a suitable anhydride in a non-aqueous solvent; if necessary, applying to the particles of vermiculite an adhesion promoter to promote the adherence of a resin to the surfaces of the particles of vermiculite; and resinating the particles of vermiculite either with a thermoplastic resin which has been surface modified by irradiation or by fluorination, or by an isocyanate thermosetting resin, or by a dry powder novolac thermosetting resin; and if necessary removing any solvent present.
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