THE CARVER LABORATORY PRESS . . . for Pressing O u t Oils a n d Liquids Three different Carver Standard Ac cessories provide for quickly getting test samples of o i l , extracts, flavors, etc.—for free fatty acid tests a n d the like, as well as high pressure pressing o f mother liquors from crystals, splitting of chilled oils, pressing out bacteria, vaccines, viruses, etc. The Carver Press is quick, simple a n d de pendable in operation. Catalog gives full facts. Send f o r your copy now.
FRED S. CARVER. INC. HYDRAULIC 347 HUDSON S T .
EQUIPMENT NEW YORK 14, Ν . Υ.
For determining viscosity of GASES, LIQUIDS, OILS, PLASTICS, SYRUPS, V I S C O U S TARS, e t c .
Products and Processes For further information on any item mentioned here, fill o u t coupon on p. 1096. Closed-Cell
Expanded
Rubber
The Rubatex division of Great American Industries, Inc., announces the full devel opment and present availability of Ruba tex gas-expanded closed-cellular rubber, for general use in industry and transporta tion and in products for the public. Unlike sponge rubber, in which the air spaces are interconnected, the Rubatex material is composed of minute ceils, each individually encased in .a wall of rubber, like a roomful of,tiny balloons. The cells are filled ftith inert nitrogen. Because there is no escape of the nitrogen, or inter change between the cells, this product possesses the properties of resilience, thermal nonconductivity, light weight, and buoyancy, in very high degree. Its mois ture absorption is practically zero. Having, in combination, the elasticity of rubber and the compressibility of the nitrogen, an exceptional ability to absorb shock recommends this material for the protection of the human body in the fur nishings of fast-moving vehicles, in the fa cilities of manufacturing plants, and in the clothing and equipment for sports in which impact is a factor. Reduction of fatigue through use in shoe soles and seat cushions is an application of far-reaching impor tance. The advantages for comfort in the construction of home and business furni ture, and in bedding, will be obvious. Other uses a,re in the packing of fragile products, damping of vibration, underpadding for floor coverings, impact fenders,
HOEPPLER VISCOSIMETER
ALLINC BALL DIMriDI
The Hoeppler Viscosimeter is s o sensitive that the difference in vis cosity between distilled and tap water caa be measured. Direct reading in centipoises ( o r centistokes). From 0.01 to 1,000,000 centipoises. Accuracy, 0.1% t o 0.5%. Falling time of ball multiplied by other factors shows absolute vis· cosity. Small sample ( 3 0 cc) re· quired. Results consistent and re· producible. Order direct or from leading laboratory supply dealers. Write today Jor Bulletin HV-503.
Gentisic Acid and Sodium Gentisate Chemicals which show promise i a the? treatment of rheumatic disorders are nowavailable t o the pharmaceutical industryin limited quantities for research, ac cording to Monsanto Chemical Co. The products, commonly known as geotisic? acid "and sodium gentisate, are chemicallyrelated to aspirin. Gentisic acid, it i s be lieved, may be the chemical produced b y the body from sodium salicylate, which*, has long been used ^n the treatment of rheumatic diseases. One theory, based on preliminary stud ies, is that gentisic acid inhibits the ac tion of an enzyme in the body. Although* sufiicient data is not available to prove this theory, it is believed that this enzyme destroys the body's tissue cement, caxising the pain, swelling, and high tempera, tures typically associated with rheumatie dis eases. Ρ2
Chrorne Welding
Pipe Technique
Development of a new procedure fofrr welding 4—6 chrome pipe using Goneral Electric welding equipment was dis closed recently by Houston Pipe and Steel, Inc., of Houston, Tex. The proc ess was devised for the welding of chrome pipe for installation in an oil refinery. A large pre heating tip withi oxyacctylene was used first t o bring the tem perature o>f the joint up to 600° to 800° and keep it there while the welding was done using G E chrome eleetrode Type W1502 (ASTMAWS Spec. N o . E-Ô02). Aftex this the tenxperature
Manufactured by
WSLS
raised to L,20O° to 1,850· and the joint wa-s wrapped witL· asbestos tape t o a minimum
FiSH-SCHURMAN CORP. 230 E. 45th St.. New York 17, H . Y.
Rsh-Schurman 1090
dust barriers, weather stripping, cxpan— sion-joint fillers, and gaskets. PL
C H E M I C A L
A N D E N G I N E E R I N G
NEWS
MARINE
DRUGS
EQUIPMENT
COSMETICS
FURNITURE
INDUSTRIAL MACHINERY
AUTOMOBILES HOME A P P L I A N C E S ^^^*A»
NEW RIVER
AIRCRAFT
Flowing into industrial plants t o d a y is an ever-widening river o f new materials—plastics. A n d thousands of products m a d e from these materials are flooding shops, homes, highways, a n d airways. Products ranging from bottle caps to doll strollers; radio dials to automatic dishwashers; safety helmets to car fenders; b o a t hulls to airplane fuselages. Products that enhance beauty . . . augment the utility of heavy-duty industrial machinery . . . form a sheath o f protection f o r sensitive instruments.
improved and produced more economically with METASAP STEARATES. They are employed b y . many textile manufacturers for their water repellent properties . . . by the paper industry f o r their plasticizing ability.
METASAP STEARATES KEEP PLASTICS FLOWING. O t h e r m o d e r n
SEND FOR NEW,
materials — METASAP STEARATES — help keep plastics flowing at lower pressure . . . prevent them from sticking to the molds . . . make their production more economical through speeding the molding cycle a n d lengthening die l i f e . . . heighten their quality through the clear-cut finish imparted to the plastic compound. RAISE QUALITY, CUT COSTS in Textile, Paper, Ceramic, Paint Plants. Besides plastics, many other types of products are
ŒTA&
METASAP STEARATES a r e also utilized to m a k e ceramics more lustrous a n d antifouling paints more resistant to marine growth . . . as thickening a n d suspension agents in paint and ink a n d as flatting agents in lacquer and varnish manufacture . . . a n d for many other applications. FREE BOOK "METALLIC SOAPS". A
careful
reading o f this up-to-date 3 2 - p a g e book on the use and value of stéarates in modern industry may give you worthwhile ideas on how to increase a n d improve your production a n d save money doing it. Send for your complimentary copy t o d a y . W r i t e . . . •METASAP CHEMICAL COMPANY, Department 10 HARRISON, N. J. Branches: Boston, Chicago, Cadartown, Ga.. Richmond. Cal.
Stocks at Cleveland, Ohio; Los Angeles and San Francisco, California; Louisville, Kentucky; Portland, Ore.; Seattle and Spokane, Wash.
stéarates of Calcium * Aluminum · Lead · Magnesium · Zinc V O L U M E
2 7,
NO.
15
» » ·
. A P R I L
11,
1949
1091
PRODUCTS
EYE WASH INC FOUNTA J Ν
s&*
Leading industrial doctors advise immedi a t e washing with plenty of running water as the best first aid treatment for a n y chemical in the eyes. Records prove that washing with water for ten minutes or more, close to the accident, is necessary to reduce or eliminate e y e damage. Forehead operation leaves hands free to open eyelids so water can be directed wher ever chemicals might b e lodged. Sanitary white baked en' anel bowl is resistant to most fumes. Over 500 industrial plant installations have been m a d e to date. • Write For Details. VALVE NEW Chain Qperatea Quick Action Self-Closing
SrtOWfR
j[| Water J 30 to 40 " G. η P. τ> M. ut
W M
The Β & A Shower is the quickest and most satisfac tory w a y to saturate a work er with gallons of water the instant a n accident occurs, to prevent a dis figuring burn—even a fatality. Special shower head, n o holes to clog—can be used where unfiltered water prevails. Write For Details. GLASS
stn,eRS
0 /SFIGURING FACIAL CUTS y AND B U R N S /
ANP
BOO*·
HA·"*" 5 PROTECTIVE B O T T L E CARRIERS
5 GALLON
are "widely used for the safe .handling of glass bottles con taining harmful chemicals; also .the storage a n d recovery of .expensive serums, biologicals, and other costly products. Painful cuts, disfiguring burns, lose of eyesight, or even a fatality, do result from corro sive liquid splash and flying glass when unprotected bottles shatter. Write For Details.
BENSON & A S S O C I A T E S ! H< 532
SOUTH CLARK STREET, CHICAGO 5, ILLINOIS
1092
A N D
thickness of 1 inch and cooled to room temperature. An ultimate tensile strength of 73,200 p.s.i. was shown, and a satisfactory rating on a 180° root bend. Brinell hardness in the weld was indicated as 248, while Brinell hardness in the pipe was 174. A Charpy impact notched test was made in the weld metal at 70°-49.0 foot pound. Chemical analysis of the weld metal showed 7.73% Cr in the weld and 4.53% Cr in the pipe. Where greater ductility and elongation was required, a furnace anneal at 1,600° was given after the pipe had cooled. This resulted in an average elongation of 40% in 2 inches. Ρ 3
Tough Thermoplastic Resin Available Formvar, polyvinyl formal, said to be the toughest of the thermoplastic resins, is now available in extrusion grade from Shawinigan Products Corp. Its tensile strength is 12,000 p.s.i. at 20° C. Because of this inherent toughness, it has heretofore been applied only from solution, but new extrusion equipment and techniques now make possible the production of tubes, rods, and sheets. Formvar is said to have excellent warp resistance, abrasion resistance, and a high heat distortion point. It is completely re sistant to oils, gasoline, aliphatic hydro carbons, fats, and waxes, and it is also resistant to alkalies. These characteris tics make it useful for automotive parts, machine parts, gasoline and oil lines, and many other industrial uses. Ρ 4
Printing Ink Vehicle Hilton-Davis Chemical Co. has been granted a patent on a new vehicle used for improving printing inks and varnishes. It is a polyamine resinous composition. Inks formulated with acidic resins react to the polyamine substances to make salt resin compositions that provide "improved pigment wetting properties and better vis cous stability. They may be so com pounded as to have better solubility char acteristics than the acidic resin composi tions." It is said the invention will save consid erable expense to users of printing inks, since, without the new vehicle, inks tended to corrode equipment and to thicken and become heavy in body, and eventually even to coagulate into heavy liver-like masses, according to the company. Ρ 5
Neutral Calcium
Arsenate
Development of a new zero-lime cal cium arsenate that may be successfully combined with organic insecticides for the control of virtually all cotton-infesting insects, is announced by the Pennsylvania CHEMICAL
PROCESSES
Salt Mfg. Co. Pencal is a special neutraltype calcium arsenate designed for com bination with such organic aphicides and miticides as benzene hexachloride, DDT, and parathion without the chemical breakdown of the organic ingredients as occurs where regular calcium arsenate is used. Thus, with one mixture, such cotton insects as boll weevil, leafworm, and bollworm can be controlled without danger of developing infestations of aphids and red spider. Ρ 6
Surface'Active
Agent
Nonic 218, a concentrated, liquid, nonionic surface-active agent of the alkylene oxide adduct type, is available from Sharpies Chemicals, Inc. It is said to possess an unusual combination of deter gent and-wetting properties. In fact, it is seldom necessary to use more than one part of Nonic 218 in 2,000 parts of solu tion. This concentration gives a DravesClarkson sinking time of less than 25 seconds at77°F. and excellent detergency. Nonic 218 is effective over wide ranges of temperature and pH. I t is claimed to be useful where cationic or anionic agents are rendered inactive in combination with either cationic or anionic agents to improve wetting, penetration, and» detergency; where hard water conditions exist; where quick and officient removal of grease is required; where cleansing and wetting action are required simultane ously; and where good emulsifying prop erties are required. Its physical properties are: Color Physical form Odor
Straw Liquid Very slight characteris tic
Specific gravity @ 20°/20° C. 1.05 Viscosity at 77 °F. 1.33 poises Average weight per gallon 8.5 1b. Concentration for 25 sec ond sinking time @ 77° F. by Draves-Clarkson 0.045% Surface tension of .05% solution 28 dynes/cm. Interfacial tension water against mineral oil .05% solution 0.0 dynes/cm. I t is soluble in water, ethyl alcohol, acetone acetate, ethyl ether, and amyl acetate. Ρ7
Rust
Inhibitor
Alox 350, a polar type rust inhibitor, is available from the Alox Corp. either as a solid or as a 10% concentrate in a light naphthenic oil, called Alox 361. This concentrate is supplied to simplify the addition of Alox 350 to oils for those not equipped to handle the solid material. Both Alox 350 and its oil solutions are AND
ENGINEERING
NEWS
uniform and stable and can be stored indefinitely without any change in compo sition or effectiveness. Inexpensive rust preventive compounds can be prepared by using low concentrations of Alox 350 in oil. Such oil solutions are said to provide excellent protection against cor rosion under widely varying conditions. Hydraulic oils, slushing oils, automotive oils, and gear oils which contain a maxi mum of 1 % of Alox 350 have maintained corrosion-free systems over many years of actual use. When Alox 350 is used in lubricating oils, freedom from corrosion is experienced, even after long periods of operation, including idle periods, and a decrease in wear of moving parts. The compound is composed predomi nantly of methyl esters of high molecular weight organic acids. It also contains other oxygenated hydrocarbons which include relatively small amounts of free, high molecular weight, noncorrosive or ganic acids. Ρ8
Those who know... order Phthahc
Ε
Oronite Chemical Co. announces an ad dition to its line of gas odorants, called Oronite LPG Odorant. It is especially for odorizing liquid petroleum gas. The com pany developed the first commercially manufactured gas odorant, Calodorant, in 1930 for the natural gas industry. Since that time they also produced Alert, a con centrated odorant for natural gas. Ρ 9
John Powell & Co., Inc., manufacturers and suppliers of a wide range of insecticide concentrates, is offering a choice of two synergists in pyrethrum-base formulas. In addition to its synergist called Sesamin the firm will supply piperonyl butoxidc. Either product when used in pyrethrumbase formulas increases the killing power and lowers the cost of finished insecticides. Ρ 10
The seed treatment, Spergon, not only protects crop seeds against invasions of fungus diseases but also acts as a growth stimulant, according to tests at U. S. Rub ber Co. agricultural laboratories. It is be lieved that this stimulating effect alone can increase the yield of corn, for example, as much as seven to eight bushels per acre. Ρ 11
Bersworth Chemical Co. has developed a sequestering agent called Versene F-3, said to be particularly effective in seques tering the trivalent iron that often exists as a chemical contaminant in solutions. The sequestering of both Versene and Versene Fe-3 varies with the pH of the solution. Ρ12 VOLUME
2 7, N O . 1 5
Koppers Phthalic An hydride is unsur passed in purity and is readily available in muifi-wcrUed paper bags containing 80 lbs.
Β
IUYERS who went through the shortage of Phthalic learned the pius value of a dependable source of supply. Koppers customers prof ited from the plus value of delivery of Phthalic as promised. Unfortunately, and much t o our regret, limited plant capacity m a d e it impossible to take care of more users. A larger plant w a s trie an swer. It w a s built and is now i n operation. A s a major producer of naphthalene, Koppers has and will have an ample supply of raw materials.
If y o u remember the past and are looking to the future, let's dis cuss your Phthalic Anhydride re quirements. W e would like to be your dependable source. SEND FOR FREE SAMPLE Koppers Company, Inc. Chemical Division Dcpt. CKX-4 Pittsburgh I». Pa. Please send me a free sample of Koppers Phthalic Anhydride. Name
Position.
Compa ny Address. _
KOPPERS COMPANY^ INC.
ô(mcba£&Û4tia#t, Pittsburgh 1 9 , Pa. APRIL
11, 1 9 4 9
1093
