Life
...on the Chemical Newsfront CH 2 -CH+CH 2 -CHfCH 2 -CHCNI
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POLYACRYLONITR1LE, ANOTHER NEW CHEMICAL, offers some interesting p r o p e r ties you may find worth-while evaluating. I t is a white, free-flowing powder of extremely fine arid uniform particle size, with a m o l e c ular weight of 130,000. Relatively heat stable, it is hard and is a good insulator. Polyacrylonitrileis insoluble in most solvents except highly active ones such as dimethylformamide,b-butyrolactone, and ethylene carbonate. Although considered inert, polyacrylonitrile may be altered by modification OX
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as hydrolysis or hydrogénation. If you s e e possibilities in polyacrylonitrile, let us send y o u a s a m p l e . (New Product Development partment, Section D)
De-
Chemistry m a k e s n e w s in Cosmefics
NEW SHAMPOO FORMULATIONS that clean without depleting the scalp a n d hair of their natural oils can b e compounded with Cyanamid's new AEROSOL® 22 Surface Active Agent. Detergency tests of AEROSOL 22 on wool show high removal of soil and low removal of oil. Additions of u p to 2 0 % of AEROSOL 22 to liquid detergents, such as tricthanolamine lauryl sulfate and nonyl phenolethylene oxide condensates, r e d u c e their drying or defatting action on t h e skin. A new bulletin on AEROSOL 22, containing suggested formulations and describing other applications, will b e
THE FIRST PLASTIC AEROSOL DISPENSER is making news in t h e toiletries industry. Developed by Colt's Manufacturing C o m p a n y , Hartford, Conn., in collaboration with Cyanamid, it is molded of Melamine Molding Compound 1077. Melamine allows precision molding to close tolerances with the necessary stability to hold its dimensions under pressure. T h e spray package is rigid, breakresistant, corrosion resistant, light, convenient to fill and ship. It offers unusual design possibilities in any color. Only nonplastic component is a stainless steel spring activating the collet. (Plastics
s e n t o n r e q u e s t . (Industrial Chemicals Division, Dept. D)
and Resins Division)
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JAN.
9,
1956
FEEDING OF AUREOMYCIN® Chlortetracycline to lambs and beef cattle from start to market helps prevent dis ease, produces healthier animals and promotes faster weight gains. Five years of extensive research at experi mental stations shows that AUREOMYCIN Chlortetracy cline lowers the incidence of disease, as well as mortality and morbidity. Two new AUHOFAC® feed supplements, containing 1.8 milligrams of AUREOMYCIN Chlortetracy cline, are being introduced through feed manufacturers to improve feeding programs. (Fine Chemicals Division)
THIRTY-FiVE HOURS IN THE LIFE of two gasoline refining catalysts, tested at 1500° F u n d e r 1 atmosphere of steam, are c h a r t e d a b o v e . T h e graph shows the greater thermal and steam stability of C y a n a m i d ' s new Hi PV* Catalysts ( upper curve ) over a catalyst in current u s e ( l o w e r curve ). By increasing pore volume, in careful b a l a n c e with pore d i a m e t e r and specific surface, Cyanamid has given A E R O C A T ® F l u i d Cracking Catalysts activ ity that stays high longer under conditions of refinery operation. Activity maintenance means high efficiency in gasoline production. Extensive experi ence with Hi PV Catalyst in refining units has d e m o n s t r a t e d commercially these performance characteristics. (Industrial Chemicals Division, Dept. D) *Trade-mark-,
Building for the Future Through Chemistry
G O O D PLASTICITY IS ACHIEVED in natural r u b b e r with P E P T O N ® 6 5 Plasticizer, which permits mastication at low temperature. This newest addition to Cyanamid's extensive line of rubber chemicals allows a reduction of as m u c h as 8 0 % in the milling cycle while still imparting the desired plasticity. And w h e r e the milling cycle is held constant, t h e viscosity of the rubber is substantially reduced —an important performance feature in process ing soft r u b b e r for products such as blown sponge. (Organic Chemicals Division)
Additional information may he obtained regarding these prod ucts by icriting on your business letterhead to the Division of American Cyanamid Company, SO Rockefeller Plaza, New York 20, Ν. Y., indicated in the captions.
JAN.
9,
1956
C&EN
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