Morton International, Inc.

Rohm and Haas Company

Walter A Richardson

Michael R Friswell

Peter A Caputo

Alejandro Zimin, Sr

Michael P Hinton

James J Fuerholzer

Richard J Colby

Richard A Patton

Austin L Eiseman

Lise L Mahoney

Drying sodium borohydride dihydrate particles in a flowing stream of a chemically inert drying gas results in novel nearly odor-free, dust-free sodium borohydride particles which are free flowing without the need for anti-caking or flow additives. The dihydrate particles are preferably dried in a fluidized bed formed with a flowing stream of nitrogen.

Production of sodium borohydride from sodium borohydride dihydrate in a fluidized bed dryer

A tag is added to an asphalt additive, typically an anti-stripping agent. The additive dye is mixed with other components of an asphalt composition and melt processed at 300.degree. F. (149.degree. C.) or above to produce an asphalt composition. Presence of the tag to identify presence of the additive is performed by dissolving the asphalt portion of the composition in a water-immiscible solvent and then extracting the tag in an acidic aqueous solution and developing a color with a diazo compound.

Tagging and identifying asphalt additives

Improved sodium borohydride powder compositions have a silica-based anticaking agent. In a method wherein a mixture of sodium borohydride and an anti-caking agent are compacted under pressure, the process is improved, particularly in speed, by the use of a silica-based anti-caking agent.

Sodium borohydride composition and improved method of producing

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Beverly, MA, United States of America

Walter A Richardson