AEROSIL brings liquids back Versatile AEROSIL silicas give you many new ways to eliminate problems with viscosity, unstable suspensions or sagging in a variety of liquid systems. Solving problems with AEROSIL We make special grades of AEROSIL for use in paints, printing inks, lotions, aqueous dispersions, vinyls, polyester, or epoxy resins and many other liquid compounds. Very small quantities of these pyrogenic silicas eliminate resin sag in polyester and epoxy compounds. Some manufacturers use AEROSIL to achieve precise flow control in dip pastes, knife coatings or spray applied finishes. Other users select an AEROSIL which permits high loadings without a marked thickening effect. You can even produce a 40% aqueous
dispersion that is still liquid. We have specific grades just for these applications. Select from 11 different grades Because thickening processes and viscosity control requirements vary so greatly, we produce 11 distinctive types of AEROSIL. Each has individual characteristics and produces specific effects. For example, take a general purpose polyester resin with a normal viscosity of 1,600 cps. 3% AEROSIL Uncompressed dispersed with high shear equipment raises its viscosity to 18,000 cps. The same percentage of AEROSIL 2491-380 boosts viscosity to 24,000 cps. On the other hand, 3% AEROSIL MOX 60 produces a viscosity of only 7,000 cps. Obviously MOX 60 and other MOX grades permit much higher loadings without creating a substantial effect on viscosity.
Berkley, Calif.: Pacific Coast Chemicals Co., Buffalo, N.Y.: James O. Meyers* Sons, Cleveland, O.: Palmer Supplies Co. of Cleveland, Dallas, Houston, Tex.: r Orleans, La.: Mehaffey & Daigle, Inc., Oak Brook, III.: The Cary Co., Pelham Manor, N.Y.: C. Withington Co., Inc., Philadelphia, Pa.: Charles A. Wagner Co., Inc., 14 C&EN
(into the thick of things) How does AEROSIL work? Its effect in liquid systems stems from minute particle size and great external surface area. According to grade, AEROSIL has a primary particle size that ranges from 3 to 50 milli microns. Likewise, external surface area (BET) varies from 50 to 400 m 2 /g. In terms of purity, AEROSIL grades go to more than 99.8% pure Si0 2 . The material has FDA approval and a list of applications will be sent on request. The combination of AEROSIL's physical characteristics and versatility make it suitable for any degree of thickening. Some users go so far as to turn liquids into powders. Others select grades that allow high loadings for more economical formulation. Use AEROSIL in many applications AEROSIL functions in many areas other than viscosity control. It can serve as a highly active reinforcing pigment, as a dispersant and as a free-flowing agent in caking powders.
It has applications as a flatting or anti-settling agent, as an emulsion stabilizer and as an anti-blocking agent in clear film. Tell us how AEROSIL interests you. Tell us what you'd like to accomplish. We'll supply samples of the most suitable grades and suggestions for their use. D Send details on AEROSIL Π Send sample I am interested in AEROSIL for use in
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Company. Address_ City
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DEGUSSA INC. Pigments Division — 2 609 Schuyler Avenue Kearny. N.J. 07032 201 - 998-4633
DEGUSSA!
Ribelin Distributors, Inc., Detroit, Mich.: Baker & Collinson, Inc., Los Angeles, Calif.: Dorsett & Jackson, Inc., Miami, Fia.: Palmer Supplies Co. of Florida, St. Louis, Mo.: Mozel Chemical Products Co., Tucker, Ga.: Kennesaw Chemical Corp., West Boxford, Mass.: Lovezzola-Ward Co.,Montreal, Canada: Philipp Bros.,(Canada)Ltd. C&EN 15
