HOW HERCULES
HELPS.. RECOVER NONMETALLIC MINERALS — B y adsorption to siliceous surfaces, such as mica, feldspar, glass, H e r c u l e s Rosin A m i n e D* and its derivatives form a molecular film that changes t h e s u r f a c e properties of the s u b s t a n c e . O n e result i n aqueous solution is flotation of t h e silica in o r e benefication. T h i s property is s h o w n in this photograph of sand flotation. P e r h a p s t h e rosin amines hold the key t o the solution of o n e of your p r o b l e m s . (Photo by Bernard Hoffman,) *Hercules
Trademark
'HOW HERCULES HELPS' is the title o f this new 36-page p i c t u r e booklet showing end uses of Hercules p r o d u c t s and containing a brief history of t h e company. For your copy j u s t drop us a l i n e or ask y o u r local Hercules representative.
W£RBWES _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ CHEMICAL M A T E R I A L S FOR I N D U S T R Y
HERCULES
POWDER, .NCOO»O=»TED
932 Market St., Wilmington
COMPANY 99. Del.
*
SYNTHETIC RESINS, CELLULOSE PRODUCTS, CHEMICAL COTTON, TERPENE CHEMICALS, ROSIN A N D ROSIN DERIVAT1VES, CHLORINATED PRODUCTS, OXYCHEMICALS, EXPLOSIVES, A N D OTHER CHEMICAL PROCESSING MATERIALS
FEB.
2 5.
1957
C&EN
9
