Uniroyal Inc.

John T O'Brien

Woodrow W White

Zaven Stephen Ariyan

This invention relates to the use of bisulfite-terminated oligomers as dispersants for solid particulate matter, i.e., low molecular weight bisulfite-terminated polymers containing carboxylate groups and either cyano or carbomethoxy moieties are improved dispersants for solid particulate matter like pigments such as titanium dioxide, clay, calcium carbonate, talc, and zinc oxide, as well as for organic pigments. Particularly, these dispersants have been found useful for stabilizing paper coating compositions.

Bisulfite terminated oligomers as dispersing agents

This invention relates to the use of bisulfite-terminated oligomers as dispersants for solid particulate matter, i.e., low molecular weight bisulfate-terminated polymers containing carboxylate groups and either cyano or carbomethoxy moieties are improved dispersants for solid particulate matter like pigments such as titanium dioxide, clay, calcium carbonate, talc, and zinc oxide, as well as for organic pigments. Particularly, these dispersants have been found useful for stabilizing paper coating compositions.

Scale formation in industrial waters, such as cooling water, is inhibited by adding a bisulfite terminated oligomer such as sodium bisulfite-terminated acrylic acid-acrylonitrile oligomer.

Bisulfite terminated oligomers to prevent scale

Certain o-triazenobenzamides are useful as anti-aggression agents. Certain methods of perparation are novel.

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Cheshire, CT, United States of America

John T O'Brien