CHEMICALS
Poly-G 200 .
Poiy-G 300 Poly-G 400
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Versatile
Polyethylene Glycols Poly-G 60^^
Poly-G 1000 NO MORE FLAT TIRES! After a 1-inch hole w a s drilled in t h e casing of Dayton Rubber's tubeless tire filled with u r e t h a n e foam, t h e car was driven over varied road surfaces without visible loss of support or tire stability
Poly-G 1500
Poly-G B1530
Foam Rides Smoothly, Safely mm
With seven different Mathieson poly ethylene glycols, y o u get the versatility you need to take care of a wide variety of requirements. Poly-G's have numerous applications as chemical intermediates, solvents and humectants. They are used in the manufacture or processing of surface active agents, resins, rubber, pharma ceuticals, cellulosic materials, printing inks, textiles, leather, etc. Poly-G's are shipped in tank cars, tank trucks and drums directly from the plant at Brandenburg, Kentucky, as well as from local distributors' stocks. Technical assistance when you need it is at your service. Poly-G® is α
trademark
Iffffl technical data sheets. Ask your Olin Mathieson representative o r write today.
rs
MATHIESON
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OLIN
MATHIESON
CHEMICAL CHEMICALS
C&EN
CORPORATION
DIVISION · 7 4 5
MAY
4,
FIFTH
A V E . . Ν. Υ .
1959
22
m
Dayton Rubber fills tires with urethane foam, hopes to end blowouts and make new market for foam X IRES represent a huge, largely un tapped market for u r e t h a n e rubbers. Some companies h a v e tried urethane rubber in tire treads, b u t have b e e n stymied by poor adhesion to the body of the tire. Others, Goodyear for ex ample, have cast solid tires from ure thane rubber. N o w conies news of a new twist that might open u p a vast market for urethanes—lise urethane foam inside the tire, in place of air. Dayton Rubber, with help from its subsidiary, American Latex Products, filled ordinary tubeless tires with ure thane foam, mounted t h e m on a test car at Hawthorne, Calif. T h e company says the ride is as comfortable as with conventional equipment; foam seems to work even better than air during high speed cornering. And, most important, the foam filled tires are immune to blowouts and flats, says Dayton. For its foam filled tire, Dayton de vised some tests to end all tests. First, a worker drilled through the sidewall with a 1-inch bit. T h e n a m e m b e r of the local police department riddled the tire with a dozen rifle shots. And, as
if this weren't enough, a man c h e w e d a 3-inch wedge out of the t r e a d with a power saw. Despite such treatment, the tire remained in one piece during driving tests t h a t followed. • Polyrubber. Dayton's test tires were filled with Polyrubber—American Latex's brand of polyester-based flex ible urethane foam. T h e company picked a formulation designed for closed molds which gives a foam den sity of about 3 3 pounds per cubic foot. T h e foam's softening t e m p e r a t u r e is above 300° F . The procedure for fill ing the tire: Liquid urethane, injected through a hole bored on the inner por tion of the tire rim, foams in place to completely fill the space inside the tire. Dayton says t h e foam forms a bond with both the 4:ire casing and t h e metal rim. According t o Dayton, its u r e t h a n e foam just about duplicates t h e riding qualities of air. R e p e a t e d r o a d tests, it says, showed greater stability and less lateral distortion during cornering *han with air filled tires. And u r e t h a n e foam seemed to give better shock ab-
what's new Lafo&Mj
MURIATIC ACID? To be candid... there's nothing new about the acid but there's this new and singularly complete Stauif er brochure. Pages, 4 4 . . .Tables, 1 5 . . . Graphs, 9 . . . Illustrations, 2 4 . . . and many pages of informative text on the major uses of Muriatic Acid. Now ready for mailing and every consumer should have a copy. Write to either of the addresses below.
CONSOLIDATED
CHEMICAL
INDUSTRIES
Division of Stauffer C h e m i c a l C o m p a n y Suite 3 0 0 South, 6 9 1 0 Fannin S t r e e t Houston 2 5 , T e x a s
STAUFFER
CHEMICAL·
COMPANY
·
3ΘΟ
MADISON
AVENUE
·
Ν ΕW
YORK
MAY
4,
ΛΎ, N E W I 9 59
YORK
C&EN
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CHEMICALS sorption without die reciprocal b o u n c ing effect usually found w i t h regular tires. Dayton does n o t see any reason why foam filled tires would not w e a r as well as regular ones. And heat build-up doesn't seem to be a problem. One test car, w i t h foam filled tires in front and regular ones in the rear, was driven 15() miles w i t h o u t any noticeable dif ference in tire temperatures. Outside air temperature during these tests ranged from 80° to 92° F. F o a m filled tires will be p u t through many more road tests before Dayton decides if it has a marketable product. And after Dayton has more d a t a to prove the value of its tires, cost will probably still b e a problem. An aver age passenger c a r tire takes 3 3 p o u n d s of foam at around $1.00 p e r p o u n d . Because of cost, the military may b e the first to use foam in tires. Later, Dayton hopes it can interest auto makers in using foam filled tires as original equipment. C 2
Plastics Get UV Shield Polyethylene and polypropylene work better outdoors, thanks to a n e w ultraviolet absorber ( U V 3 1 4 ) d e veloped b y American C y a n a m i d , New7 York. The company feels t h a t the prod uct— 2,2' - dihydroxy - 2 - η - octoxybenzo phenone—may increase polyethylene consumption ( 8 3 2 million pounds in 1958) by from 10 to 50 c /r. And it foresees a similar impact on the poly propylene market. Cyanamid says that polyethylene and polypropylene products for outdoor use have u p to now been mostly imsuccessfnl because of the plastics' ultraviolet instability. Today's commercially available ultraviolet absorbers, except for carbon black, have not been com patible with polyethylene, the com pany adds. A n d although effective as a light absorber, carbon black limits t h e resin's u s e to opaque, black products. Marine ropes and fabrics for autonv)Hve upholstery and lawn furniture ίι.ν some of t h e products that may b e in.:de with ultraviolet-stabilized poly ethylene fibers. Typical film and sheet ing applications include m u l c h i n g and greenhouse sheeting, tarpaulins, high altitude balloons, and moisture barriers for building construction. UV 314 is a pale yellow p o w d e r that absorbs strongly in the 300 to 3 7 5 52
C&EN
MAY
4,
1959
millimicron ultraviolet range, says the company. Its long aikyl group (noctyl) at the ether linkage makes it compatible with polyolefins. In tests m a d e under Arizona sunlight, 10-mil polyethylene sheets containing 0.171Γ4 by weight of UV 314 retained 85r/estieides, and intermediates. Isopentanoic acid has potential applications in manufacturing operations in which butyric, isobutyric, and low molecular weight fatty acids have proved to be less than ideal, says t h e company. The alcohol esters of 2-methylpentanoic acid have potential uses as reaction solvents, extractants, flavorants, and fragrances. C4 • 4-ferf-Butyi fhiopnenoï now conies in semiworks quantities from Pitt-Consol Chemical, Newark, N. J., for use w h e r e a reactive SH group is needed, b u t where the usual mercaptan odor is undesirable. The chemical is said to have better oil solubility and lower vapor pressure than the unsubstituted thiols. C5 • Dimethyl acetal can now be obtained from Aceto Chemical, Flushing, Ν. Υ., in commercial quantities for pharma ceutical uses. Dimethyl acetal is sug gested for use as an intermediate in making sulfathiazole and other phar maceuticals. It is a source of anhy drous formaldehyde and can be used as both a starting material and a selec tive solvent in making intermediates, according to the company. C6 • î«ew bromo-methyl a l k y l a t e d phen o l - f o r m a l d e h y d e resin, SP-1055, is
said to reduce t h e cure time of butyl rubber and impart improved h e a t r e sistance and compression set properties. Schenectady Varnish, Schenectady, X . Y„ markets the resin. T h e firm ckvms that t h e resin makes it possible to cure butyl rubber in 10- to 6 0 minute cycles at 3 0 0 e to 350° F . And no catalyst is needed to effect t h e cure, the company adds. C 7 • Two new p r o t e c t i v e coatings (called Horsey-Set) come from Horsey-Robson. New York. One product is a nonskid, waterproof decking which is said to combine great resistance to abrasion, moisture, oils, greases, acids, alkalies, and salts. T h e other product is a tank lining which is virtually fumeless, odorless, a n d has extreme resistance t o penetration from boiling water, steam, gasoline, oil, a n d grease, according to t h e company. C 8 • Triton QS- Τ 5 is a n e w amphoteric d e tergent for cleaning metal parts in soak tanks. Rohm & Haas, Philadelphia, Pa., which markets the product, says that Triton QS-I5 combines vigorous detergent action with solubility in rela tively high concentrations of alkaline cleaners, wHiie a t the same time hav ing chemical stability in strong caustic. T h e detergent also may be used in highly alkaline household, institutional, and industrial cleaners; in a detergent compound for washing bottles; and in steam-cleaning compounds. C* • N e w flooring m a t e r i a l (Emeri-Epox) comes from Walter Maguire Co., N e w York, for topping or resurfacing con crete, wood, tile, stone, brick, a n d metal flooring. T h e product is said to b e flexible, completely waterproof, a n d h a v e a nonslip surface CIO • Chemi-Top is a new corrosion-re sistant floor topping for food plants, laundries, refineries, bottling plants, chemical plants, and other plants hav ing severe floor corrosion problems. T h e topping, marketed by Garland Co., Cleveland, Ohio, is said to withstand impact and wear and be unaffected by acids, alkalies, grease, and solvents. C 11
Further useful information on keyed Chemical items mentioned is readily available . . .
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