HOW HERCULES
HELPS... RECOVER NONMETALLIC MINERALS—By adsorption to siliceous surfaces, such as mica, feldspar, glass, Hercules Rosin Amine D * and its derivatives form a molecular film that changes t h e surface properties of t h e substance. One result in aqueous solution is flotation of the silica in ore benefication. This property is shown in this photograph of sand flotation. Perhaps the rosin amines hold the key to the solution of one of your problems. {Photo by Bernard Hoffman.) *Hcrculrs Trademark
'HOW HERCULES HELPS' is the title of this new 36-page picture booklet showing end uses of Hercules products and containing a brief history of t h e company. For your copy just drop us a line or ask your local Hercules representative.
HERCULES CHEMICAL
MATERIALS
FOR INDUSTRY
HERCULES
POWDER
COMPANY
904 King St., Wilmington 99, Del. SYNTHETIC RESINS, CELLULOSE PRODUCTS, CHEMICAL COTTON, TERPENE CHEMICALS, ROSIN AND ROSIN DERIVATIVES, CHLORINATED PRODUCTS, OXYCHEMICALS, EXPLOSIVES, AND OTHER CHEMICAL PROCESSING MATERIALS
For further information, circle number 65 A on Readers' Service Card, gage 135 A
VOL. 49, NO. 3
·
MARCH 1957
65 A
