Process for obtaining silane derivatives of sepiolite by reaction with alkoxy-silanes to improve their reinforcing capacity in polymers
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United States of America Patent
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Nov 24, 1981
Grant Date -
N/A
app pub date -
Mar 24, 1980
filing date -
Jun 28, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to a process for obtaining dilane derivatives of sepiolite by reaction with alkoxy-silanes to improve their reinforcing capacity in polymers, the reaction being carried out by placing the finely divided sepiolite and the alkoxy-silane in close contact, either by vaporization of the latter by the action of heat or by the spraying thereof with nitrogen, the contact taking place in countercurrent in a column of suitable dimensions, the reaction temperature ranging between room temperature and the vaporization temperature of the alkoxy-silane, further characterized in that the silane derivative of the sepiolite is subsequently dried to 110.degree. C. to remove the reaction byproducts.
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