SUPER-VERSATILE AIRBORNE SILICA performs more functions more efficiently Functionally
unique because so often it takes
What silica ao you know, other tiy?** this airborne CAB-O-SIL© that will perform like this: Reinforcing age.'lt . . . where rubber compounds containing 40 parts Cab-o-sil per 100 parts silicone rubber are formulated to yield tensile strengths of more than 15O0 pounds per square inch. High reinforcement is also obtained with natural, SBR, butyl and neoprene rubber polymers. Suspending ag6Vlt . . . where package stability of pharmaceutical suspensions with 0.1-2.0% Cab-osil has retarded the settling of high density prime pigments. Flow properties of such systems are also simultaneously controlled. See Bulletin #cpha-l listed below. Flatting agent . . . where flat varnishes formulated with 1 8 % Cab-o-sil (based on total solids) have given 60° gloss meter readings of 15 on black carrara glass. After six months of storage, pigment settling is insignificant — 9 5 % of the vehicle has been observed to contain suspended pigment. Thickening and gelling agent . . . where small percentages of Cab-o-sil by weight are required to produce soft gels (corresponding liquids listed in order of decreasing polarity) : 1 2 % in water; 1 1 % in ethylene glycol; 9% in butyl alcohol; 8 % in turpentine; 7 % in benzene. TfliXOtropiC agent . . . where the addition of 1 % Cab-o-sil to a nonthixotropic polyester resin has increased the viscosity from 410 centipoises (Brookfield viscosity) to 8,000 centipoises at 2 r.p.m. and 3,500 centipoises at 20 r.p.m.
USES: • Thixotrapic, thickening, gelling agent— lubricating oils, greases, polyester resins, epoxy resins, plastisols, plastigels, organosols • Suspending agent— paints • Flatting agent — varnishes, lacquers, . organosols, plastisols • Reinforcing agent— rubber, silicone, latex film • Anticaking agent— sulfur, insecticides • Antislip agent—solvent-base floor waxes Precoating material— reproduction paper • Low temperature thermal Insulation • Pharmaceuticals and cosmetics
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Anticaking agent . . . where 0.4% Cab-o-sil has produced free-flowing sulfur, zinc oxide and other rubber accelerators. Less than 1.0% will make any powder free-flowing. And 0.5-1.0% Cab-o-sil increases the effectiveness of powder insecticides as well as increasing the free-flowing properties. AntisNp agent . . . where antislip properties can be imparted to solvent base floor waxes b y the addition of very small quantities of Cab-o-sil. A film of higher gloss also results. Thermal insulation . . . where Cab-o-sil has a n apparent CCK" of 15 rnicrowatts/cm/°K at a mean temperatiire of—150° K; extremely low moisture simplifies evacuation problems.
Grease thickener. . . where 5.1% Cab-o-sii produces a crystal-clear #1 grease with excellent oxidation, temperature and shear stability.
CHEMICAL AND PHYSICAL PROPERTIES Silica Content (Moisture-Free Basis) 99.0-99.7% Free Moisture (105° C.) 0.2-2.0% ignition Loss (1000° C.) 0.2-1.0% CaO, MgO 0.00% Fe^ .......0.004% Particle Size Range O.015-0.020 micron Surface Area (Nitrogen Adsorption) 175-200m.2/gm. Specific Gravity 2.1 Color White Refractive Index 1.55 pH (4% Aqueous' Dispersion) 3.5-4.2
FREE CAB-O-SIL® sample and bulletins Minerals & Chemicals Div., CEN GODFREY L CABOT, INC. 77 Franklin Street, Boston 10, IVlass.
Please send CAB-O-SIL sample and: NAME T|T| F 1 L t
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mwiPANY ADDRESS
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) General Properties, Functions and Uses (#cgen-l) > Cab-o-sil i n the Rubber Industry (#crub-l) ) Cab-o-sil i n Butyl Rubber (#crub-2) ) Cab-o-sil i n the Lubricating Grease Industry (#cgre-l) ) Aqueous Dispersions of Cab-o-sil (#cmis-2> > Cab-o-sil i n the Paint industry (#cpai-2) > A Flatting Agent for Varnishes Cab-o-sil i n the Reproduction Paper Industry (#cpap-l) ) Cab-o-sil i n Polyester-Glass Reinforced Plastics C#cpla-1> ) Cab-o-sil i n the Plastics Industry (#cpla-2> ) Cab-o-sil i n Automobile Polishes (#cpol-l) > Cab-o-sil i n Pharmaceuticals and Cosmetics (#cph?.-l)
