The Harshaw Chemical Company

Anton Mudrak

Gerald Dennis Burt

John Slocum Ashman

Roelof Hildering

A method of preparing esters and salts of esters of pentavalent antimony from hydrated metal antimonates is disclosed. The method comprises heating a mixture of a hydrated metal antimonate and an organic compound selected from the group consisting of

Method of preparing salts of esters of pentavalent antimony

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

Titanate treated antimony compounds

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

Zirconate treated antimony compounds

Bright zinc deposits are obtained from an acid bath containing a carboxy terminated anionic wetting agent and a brightener comprising a heterocyclic compound selected from the group consisting of furans, thiophenes and thiazoles.

Acid zinc electroplating

Organic dyes or dye intermediates are crystallizable in an aqueous medium in the presence of finely divided, solid polytetrafluoroethylene (hereinafter referred to as 'PTFE') resin particles. Crystals of desirable, very small size are precipitated more quickly than with conventional seeding. This process is particularly useful for crystallizing disperse dyes of two types:

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Broadview Heights, OH, United States of America

Anton Mudrak