H
I CHEMICALS
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Poîyhutvlene Glvcol H H H H H H Ut)__C—C— O—C C -O—(C—C—«»xH ; H H ! H ]
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CI Cl Polyepichlorohydrin
M e m b e r s of N e w Polyglycol Series
latter application, they yield rigid products which might have uses in insulaA polystyrene glycol, Polyglycol 174-500 w i t h an average molecular weight of tion and structural materials. • Polystyrene Glycols. Prepared 500, took 8.5 minutes to reach this point in pouring demonstration. This chemifrom styrene oxide, the polystyrene cal is expected to find uses where high viscosity is important glycols are designated as Polyglycol 174, available in molecular weights of 500 and 7 5 0 . A preponderance of phenyl groups along the polyether chain is probably responsible for the high viscosity of this series. (Polyglycol 174-500 for instance has a visThree n e w polyglycols b y Dow Chemical have a p - cosity at 100° F., ctks. of 10,833). series is hydrophobic in nature plications in polyurethane and surfactant production This and thijs according to the company, has possibilities as an intermediate for surfactants incorporating t h e hydro1 HRJEE new series of polyglycols de- pany says the new polyglycols can be veloped b y D o w research chemists are expected to find application in the phobic phenyl group. • Polyepichlorohydrins. T h e polynow in pilot plant production by the paint, petroleum, detergent, plastics, epichlorohydrins, designated as Polycompany—polybutylene glycol, poly- and coating industries as well. • Polybutylene Glycol Series. This glycol 166, are offered in molecular styrene glycol, and polyepichlorohydrin. All three series are adaptable series contains four members, B-500, weights of 450, 900, and 1150. Charas intermediates in the production of B-IOOO, B-1500, and B-2000, designat- acterized by terminal hydroxyl groups polyurethanes and in the expanding ing molecular weights of 5 0 0 , 1000, and chloro-methyl side chains, these surfactant field. Additionally, t i e com- 150O, and 2000, respectively. Manufac- compounds offer dual reactivity at tured from 1,2-butylene oxide and 2,3- either the chlorine or the hydroxyl sites. butylene oxide, these compounds have By controlling the reaction p H , selecethyl and methyl side chains. Like tive reactivity is possible; basic condipolypropylene glycols, all members of tions favor side chain reaction with this series are liquids. However they chlorine and acid conditions favor the h a v e a highly hydrophobic character reaction at the terminal hydroxyl e v e n at the lowest molecular weights. groups. According to D o w , reactions Their solubility in acetone, benzene, involving the chlorine and active hydrocarbon tetrachloride, and other organics gens offer a n e w and fascinating route is rJhe highest known organic solubility to a wide variety of linear and crossof presently known polyglycols, says linked polyether structures. company. For example, the polybutylIn addition to use in production of ene glycols are the first to display sol- polyurethanes and surfactants, the ubility in S.A.E. 20 lubricating oil. company says the polyepichlorohydrins Polybutylene glycol, B-I0Ô0 with moAlthough D o w currently has little use should find use in the production of lecular weight of 1 0 0 0 , is completely information available, it believes the resins and coatings. soluble in mineral oil (left) while the n e w polybutylene glycols warrant inT h e three n e w series are currendy polypropylene glycol with molecular vestigation as oil additives and poly- offered by D o w on a developmental weight of 1200 is insoluble uretJiane foam intermediates. In the basiSr C 1
Polyglycol Trio
4426
C&EN
SEPT.
10, 1 9 5 6
Prevent catalyst contamination.. .with
a A T A B U L A R ALUIVSIMA
for bed supports or covers Prevent catalyst contamination problems! Use ALCOA® Tabular Alumina Balls for bed supports or covers. Neutral, nomreactive ajid highly refractory, they keep con tamination negligible. ALCOA Tabular Alumina Balls axe high purity alumina in the sintered corundum form. Their chemical analysis is t>etter than 99.5% AI2O3. Their softening point is well above 350O°F. . . . and they are unaffected by oxidizing or reducing a t m o s pheres at temperatures below their soften ing point. They are practically insoluble in all aqueous and alkaline solutions., ALCOA Tabular Alumina Balls ΤΓ-162 are available in % inch, y& inch, M inch and 34 inch diameters for use as catalyst and desiccant bed supports or covers where exposed to high temperatures, severe cor rosive or erosive conditions. ALCOA Tabu lar Alumina Balls T-164 available i n VA inch and Y& inch diameters offer greater resistance to thermal and mechanical shock. They are suitable for pebble heaters and similar severe operations requtiring high heat capacity and conductivity. For more information and samples, write ALUMINUM COMPANY OF AMERICA,
CHEMICALS DIVISION, 704-J Alcoa build ing, Pittsburgh 19, Pennsylvania.
MEAN SPECIFIC HEAT (Btu/Ib/°F)
74°F. to 212°F 74°F. to932°F 74°F. to 1832°F
O.200 0.233 0.244
BALL SIZES A N D WEIGHTS Nominal size. inch
Passes screen opening. inch
Retained on screen opening, inch
Approx. Bails per pound
Approx. Pounds per cu. ft.
VA
0.371 0.525 0.624 0.883
0.263 0.371 0.525 0.742
670 202 72 27
128 126 125 125
SEPT.
10.
3
/8
Vl VA
T H E ALCOA HOUR TELEVISION S MNEST LIVE DUMA ALTERNATE SUNDAY EVENINGS
ALCOA CHEM8CALS
1956 C & E N
4427
Can When research into cyanoethylation began many years ago, its future was unknown. Its real future is still unknown today. But chemists are intensifying their investigation to discover new deriva tives that may be obtained "with acrylonitrile. The challenge is dressing, since almost any material containing a labile hydrogen atom is reactive with acrylonitrile* Lignin, for example, with its phenolic hydrogen and other reactive centers is susceptible to cyanoethylation. But the question of what properties might be developed from the altered molecular structure containing a reactive Nothing contained herein shall be construed as a recommendation produce or use any product in conflict with, existing patents,
to
nitrile group opens a broad new field for study. Some day the answers to thousands of questions lik these will be known. Perhaps from your laboratories wi come some of the answers that will result in new an profitable products. T e c h n i c a l L-sferaiure on αί»τ·ΛΓΐπηι trile and laboratory-size samples are available. Write on your letterhead to Monsanto Chemical Company, Plastics Division, Room 308, Springfield 2, Massachusetts. Where creative chemistry works tvonders for yo
CHEMICALS
High-Analysis Fertilizer Ford Motor is n o w marketing diammonium phosphate produced as a by product of coke-making operations a t its Rouge plant in Dearborn, Mich. Changes i n Ford's method io remove ammonia from coke oven gas have made possible production of t h e new fertilizer. T h e coke oven gas is washed with electric furnace phosphoric acid rather than sulfuric—conversion was in stalled with technical assistance from Monsanto Chemical. Currently, Ford Motor is producing about 80,000 lb. of diammonium phos phate daily. C2
prepared with Dylex latex K-34 have undergone numerous freeze-thaw cycles a t —5° C , with minor changes in viscosity; the latex itself has been subjected to over 4 0 freeze-thaw cycles with n o apparent viscosity change, company says. C4
Nitrogen Solutions Allied Chemical & Dye's nitrogen division is in production of five new con-
centrated nitrogen solutions. Containing less water than solutions currently offered, the solutions promise freight savings u p to TV*, says company, and should permit more satisfactory output from existing equipment in plants making either granular or nongranular fertilizers. One of the new solutions is designed specifically for manufacture of granular fertilizers a n d can b e used year round because of low salting-out temperature.
Paint Latex by Koppers A new formulation of styrene-butadiene copolymer fortified with a n addi tional ingredient during polymerization has been developed by Koppers chemi cal division. Koppers says the formu lation, called Dylex latex K-34, h a s many improved characteristics. Possessing a particle size finer in comparison with other high-styrene type latexes, the new latex is said t o have increased pigment binding strength a n d improved adhesion to a variety of surfaces. Additionally, both its mechanical a n d chemical stability simplify p a i n t manufacture. In laboratory a n d field tests, paints
BEST PAINT SOLD" now formulated with Colton
FLEXBOND
800
Famous (ji[g) Brands with Copolymer Polyvinyl Acetate Rate Tops with Dealers and Painters The Patterson-Sargent Co., one of the oldest and finest names in paints, now offers a complete line of Viny-Bond Vinyl Latex Flat Wall Finishes as well as primers and exterior masonry coatings based on Flexbond 800. The BPS label has always stood for quality. Dealers and painters know and respect BPS quality from long experience. And qualityconscious Patterson-Sargent Co. protects its high standards by choosing Flexbond 800 as the finest Copolymer Polyvinyl Acetate to achieve outstanding film integrity, scrub resistance, sheen uniformity, easy brushing and package stability. Independent tests by Daniel-Litter Laboratories on Flexbond 800 are proof positive of the soundness of this choice. Dealers who push Patterson-Sargent paints with Flexbond 800 find that all-out consumer endorsement means profitable sales and repeat orders. Our representatives will be glad to review with you the Daniel-Litter Laboratories report . . . and show you what Flexbond 800 can do ta your paint formulations. Write to Depf. B-9.
φ Fast Acting Defoamer Dow Comings Antifoam Β is instantly dispersibîe i n aqueous systems a n d may be added " a s is" without stirring or agitation. It is effective in range of from 3 to 30 p.p.m. a n d retains its effectiveness even after being literally frozen or boiled, says company. C3
COLTON CHEMICAL C O M P A N Y A Division o f Air Reduction Company,
inc. ·
1 7 4 7 Chester Avenue, C l e v e l a n d 14ff O h i o
SALES O r r i C E S A N D WAREHOUSE FACIUTIgS THROUGHOUT U. S. EXPORT. AIRCO C O M P A N Y INTERNATIONAL. NEW YORK 1 7 . Ν . Υ.
SEPT.
10, 1 9 5 6 C & E N
4429
CHEMICALS ,
?# Χ.^ * t
• · Compelling Reasons are attracting Chemical Plants to the Land of P l e n t y · · N e x t door to t h e world's f i n est all-purpose Bituminous C o a l
T h e rich territory served by t h e N o r f o l k and W e s t e r n has seven o u t s t a n d i n g c o m petitive a d v a n t a g e s for the chemical industry. That's why more and more chemi cal p l a n t s a r e b e i n g l o c a t e d here. T I n a d d i t i o n to the s e v e n a d v a n t a g e s listed h e r e , t h e L a n d of P l e n t y h a s m a n y other favorable characteris tics—access t o world mar k e t s t h r o u g h the s t r a t e g i c P o r t of N o r f o l k o n f a m e d Hampton Roads, moderate year-round climate, friendly folks w h o m a k e n e w c o m e r s feel w e l c o m e , and e x c e l l e n t r e c r e a t i o n a l facilities. If you w o u l d l i k e t o re ceive m o r e d e t a i l e d i n f o r m a t i o n o n t h e Land of P l e n t y , p l e a s e call o n our p l a n t l o cation specialists. They w i l l f u r n i s h y o u w i t h facts — n o t sales t a l k — i n c o n f i d e n c e and without obligation.
Write,
Wire or Call:
L. E. W a r d , Jr., M a n a g e r Industrial and Agricultural Dept. D r a w e r C N - 7 2 7 (Phone 4-1451, Ext. 474) Norfolk a n d W e s t e r n Railway Roanoke, Virginia
R e a d y access vast sources I Ime s t o n e the highe purity
to of of st
Nearness to established markets, plus booming n e w ones
Ample electric p o w e r and i n dustrial w a t e r
P l e n t y of p r o ductive, h o m e rooted workers
Excellent i n d u s trial building sites with r o o m for expansion
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S t a t e and c o m munity tax p r o grams favor able t o industry
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&ΦΦ4&À
RAILWAY 4430
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10.
1956
Also two Urana t y p e solutions are included for manufacturers of semigranular and organic nitrogen fertilizers. C5
ψ Biscnoff Chemical is offering another c o m p o u n d in its line of strippable pro tective coatings. Thermo-Cote N-4 is designed for applications such as mask ing surfaces in plating or etching op erations. Company says its nonoil exuding feature fits it for use with ma terials t h a t may b e h a r m e d by contact with oil. C6 • W h i t t a k e r , Clark & Daniels has ex tended i t s line to include A q u a d y n e and Hydrodyne, products of Aquadyne Corp. T h e s e are concentrated, multi phase w e t t i n g agents. A q u a d y n e is c o m p o u n d e d in solid capsule form for use in t h e Hydroblender; Hydrodyne, a liquid concentrate, can be propor tioned a s required, by h a n d or b y liquid proportioning devices. C7 ^Allied Chemicals & Dye's Solvay process division will use t h e t r a d e name Ozene for t h e odor suppressant and solvent cleaner previously called Orthosolv. Cβ • Monsanto Chemical has introduced a new controlled suds detergent for auto matic washers i n 24 eastern states. Called " n e w super-rinse all," product contains combination of ingredients de signed a s AE-160 a n d is said to improve whiteness a n d brightness of clothes more t h a n 5 0 % . C9 • Contact adhesive introduced by Goodyear Tire a n d Rubber's coatings department is a 2 5 % solids material. Dubbed Pliotac, it is said to have good bond strength, excellent tack, low level dry film odor, a n d to remain perma nently flexible after application. Com pany says it can b e u s e d to join any combination of plywood, plastic, glass fiber, foam rubber, natural fiber textiles, metals, plaster, concrete, a n d ceramics. C 10 • Ice and snow melting material by Speco, k n o w n as I c e R e m - C F , does not produce heat effect as p a r t of melting process m a k i n g it suitable for use on ce ment, concrete, a n d asphalt. Addition ally, the n e w chloride-free material is reputed to b e harmless to metals and vegetation. C 11
I
Further useful information on keyed Chemical items men tioned is readily available . . . Use handy
coupon
on page
4442
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