1 New Automatic Thrust Balance eliminates axial bearing wear
CHEMICALS
2 Neiv Oil-Filled Stator Cavity increases life of motor windings 3 New Bearings, three times as large, reduce radial bearing
NEW LEAKPROOF OHEMRUIVIR longer l i f e . . . lower price The new lower-priced Series G CHEMPUMP
practically eliminates the only two service points in a pump long known for its low maintenance burden. A new automatic thrust balance design eliminates axial bearing wear by equalizing hydraulic pressures across the rotor and impeller. New front and rear bearings are three times as large, more than tripling radial bearing surface and therefore bearing life. Motor life is greatly extended by a new oil-filled stator cavity that increases heat dissipation from the windings. Series G incorporates many other fieldproved design features that have accrued from more than 10 years of experience and leadership by CHEMPUMP—the original canned pump manufacturer. For a full description, write for Bulletin 2050. CHEMPUMP DIVISION,
FOSTORIA
CORPORATION, Buck and County Line Roads, Huntingdon Valley, Pa.
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First in the field . , process proved
OHEIVIF>UIVIF> 62
C&EN
JULY
17, 1 9 6 1
Porcupine Container Dispenses Cesium An ampoule of cesium is cut off a porcupine container by George Cobel of Dow's electro-inorganic laboratory. The container represents a convenient way to handle the company's new product (C&EN, July 10, page 37), particularly in lab amounts, Dow says. The metal poses handling problems; it has to be packaged in vacuum or under argon because it burns in air, explodes when it contacts water. With the porcupine, the desired amount of cesium can be poured into an ampoule, then the ampoule can be cut off without exposing the metal. Dow makes cesium by its own reduction process, currently sells it for $325 per lb. for 5 lb. or more.
BRIEFS Four reactive dyes are being marketed by Sandoz Inc., New York, N.Y. The Drimarene-Z dyes—a yellow, a golden yellow, a navy, and a bordeaux—are recommended for printing and pad dyeing. They have brilliance of shade, high fastness to washing, and easy rinsing of unfixed dyes, according to the company. C 1
Latex additive for cement mortar is being offered by Dow Chemical, Midland, Mich. The synthetic latex particles in Styrocrete increase the mortar adhesion, reduce water and water vapor transmission through the mortar, and result in stronger, tougher mortars, according to the company. Suggested uses for Styrocrete are in bonding Styrofoam insulation boards to masonry, cured concrete, metal, or other surfaces. C2
Gasketing material, Duroid 3200, is available from Rogers Corp:, Rogers, The material, an asbestos Conn. fiber—Buna N sheet, is produced by the beater addition method, which results in a homogeneous blend of fiber and latex. The Duroid 3200 is used primarily for round gaskets of thin sections, the company says. C3
Rubber extender that gives added strength and durability to rubber compounds is available from Long Island Plastics, Lindenhurst, N.Y. Called Lipco paste, it is a nylon material which has an accelerator incorporated in it. Miscible with both synthetic and natural rubbers, the material decreases molding cycle time by 70 to 80%, the company claims. Lipco paste can be used to make shoe lifts, heels, typewriter rollers, and sheeting, among other products, Long Island Plastics says. C4
Comparative slip resistance of floor wax is determined by this special apparatus devised by Neville chemists. Water enters top container by a constant
level controlled flow. Amount required to drop the containerand thus pull the standardized slide across waxed surface establishes relative values.
Unique slip test proves value of Nevillac® as wax modifier To show the adaptability of Nevillac, Neville Chemical Company's hydroxy resin, as a partial replacement for many expensive natural waxes, a large number of tests were made on floor waxes containing Nevillac. The results were most gratifying. Nevillac was found to promote a marked improvement in gloss, better-thanaverage non-slip quality, good water resistance yet sufficent removability and satisfactory hardness. This is but one example of the great versatility of the Neville family of hydroxy resins. They present the formulator with a range of film hardness and plasticization through a choice of softening points. The Nevillac
resins are so widely compatible with a host of other materials, t h a t they often act as agents in bringing together materials normally incompatible. Nevillac also offers lower hot-melt blending temperatures than most synthetics, possesses permanent plasticity, good light stability and ease of emulsification. In addition, Nevillac imparts added tack and adhesion properties to compounds and accentuates resistance to acids and alkali. Write now for Bulletins 75 and 87 describing Nevillac and its suitability as a wax modifier.
Neville Chemical Company, Pittsburgh 25, Pa.
Neville Products
NEVILLE „ma
Resins—Coumarone-lndene, Hydrocarbon (Thermoplastic and Heat Reactive), Hydroxy • Oils—Plasticizing, Neutral, Rubber Reclaiming, Shingle Stain • SolventsAromatic (Refined and Crude), Semi-Aromatic (Refined and Crude). • Antioxidants—Non-Staining Rubber • High Purity Indene • Indene Derivatives • Crude Naphthalene.
