Life
. . . o n the Chemical Newsfront
BLUETONGUE, A NEW DISEASE IN SHEEP first recognized in the U.S. a few years ago, now is spreading widely. Bluetongue may kill one out of five sheep infected, and severely set back the others. This virus disease has not been treated successfully but oped by CyanamicTs Lederle Laboratories Division. Vaccination should be completed a full month before Bluetongue season arrives. Your veterinarian can give firsthand information. Our literature on Bluetongue disease and vaccine is available. (Lederle
RUGS COLLECT LESS DIRT, are cleaned more easily when treated with CYANA® Soil Retardant. Illustration shows striking contrast between treated and untreated sections of same rug exposed to identical soiling conditions. CYANA Soil Retardant acts by filling the roughnesses on the fibers with an almost invisible protective surface. This prevents soil from clinging and makes it easier to remove dirt. This new improved compound should be particularly valuable for treatment of non-wool rugs, which are increasing in popularity but tend to soil more readily than wool. (Textile Resins
Laboratories Division)
Department)
PUT PLANT REFUSE TO WORK. Com stalks and roots were decomposed almost completely from Fall to Spring to form soil humus when plowed under with AERO® Cyanamid Granular ( left photo) but remained firm and woody without this nitrogen- and lime-containing chemical (right photo). Illustrations also show improved condition of the soil due to humus formation with AERO Cyanamid. The high nitrogen content of AERO Cyanamid not
only feeds the bacteria, which hastens decomposition, but also assures ample supply of this important plant nutrient for growing crops. AERO Cyanamid's lime content helps prevent soil acidity. For years AERO Cyanamid has improved soil and increased crop yields for farmers, and now is available as LAWN AND GARDEN Cyanamid to speed production of humus for home gardeners.
may be prevented with LEDERLE BLUETONGUE VACCINE devel-
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C&EN
SEPT.
12, 1955
(Agricultural Chemicals Division)
NEW ORGANIC WATER-LOSS CONTROL REAGENT, known as OYPAN* Drilling Mud Conditioner, is outstanding under hightemperature drilling conditions and where contamination is en countered (as with salt in off-shore drilling). Laboratory and field tests have demonstrated its effectiveness at temperatures as
high as 350° F even in the presence of considerable amounts of contaminants. CYPAK Drilling Mud Conditioner is a high molec ular weight, water-soluble acrylic polymer which does not re quire preservative treatment t o prevent fermentation. (Industrial Chemicals Division)
^Trade-mark
NEW WATER-SOLUBLE POLYMER, which forms wat« insoluble films and coatings when air-dried or heat-cured, offers intriguing possibilities to paper, textile, adhesive and other manufacturers. The new polymer is methylolated polyacrylamide and may be made by treating aqueous solu tions of polyacrylamide with formaldehyde using basic cata lysts. Variation in properties may be obtained by changing processing conditions and by use of polyacrylamide of dif ferent molecular weights. Dried films of methylolated poly acrylamide are clear and hard, insoluble in boiling water, and may be softened somewhat by water immersion. Dilute solutions of the new polymer are stable for at least six months at pH 6-7. Samples of polyacrylamide and directions for methylolation are available on request. (New Product Develop ment Department) Β9ΒΒ9βΒΒ3ΗΜΜΒΜΜΜΜΜΜ
C.E.N.
NEW VAPOR PHASE CHROMATOGRAPHY apparatus, developed in Cyanarnid's Stamford Laboratories, automatically separates and identi fies volatile organic liquids. Mixed vapors are separated in a partition column, and analysis is read directly on chart. Apparatus may Be em ployed, on stream or in research projects. Used at Stamford in research on new catalysts for petroleum refining, it permits rapid evaluation of catalyst eflBciency. Cyanamid's extensive series of AEROCAT® Catalysts has reduced cost and increased efiBciency in fluid catalytic cracking operations through development of catalysts with optimum particle shape, high pore volume, and extreme stability. (Industrial Chemicals Div.) SEPT. 12, 1955
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