The Harshaw Chemical Company

John Slocum Ashman

Anton Mudrak

Gerald Dennis Burt

Finely divided particulate inorganic antimony compounds which are surface modified with up to about 5% by weight of an organosilane having the formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are each independently hydrogen, lower alkyl, lower alkenyl, alkoxyalkyl aryl, lower alkylaryl, or lower arylalkyl groups, and R' is an organo functional group are described. These surface modified antimony compounds may be incorporated into various organic resin and elastomer systems to improve the flame-retardant properties of these materials.

Silane treated antimony compounds

Finely divided particulate inorganic antimony compounds which are surface modified with an organic titanium compound having the formula

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Euclid, OH, United States of America

John Slocum Ashman