C&EN
COMMERCIAL CHEMICALS
PROGRESS REPORT
These items have all been mentioned editorially in C&EN in the past month. If you haven91 already sent for9 information on them, just check the appropriate key numbers on the coupon on page 84, and C&EN s Readers9 Information Service will forward your request to the manufacturer. Material
Company Ames Laboratories, Inc. Milford, Conn.
Amines
C60
Metal powders
C61
Cerac, Inc. Butler, Wis.
Acid (diphenylphosphinodithioic) Fluorine compounds (hexafluoropropylene and tetrafluoroethylene) Synthetic high polymer (Ficoll)
C 62
Lubrizol Corp. Cleveland, Ohio Peninsular ChemResearch, Inc. Gainesville, Fla.
C 63
Pharmacia Fine Chemicals New Market, N.J.
C 64
Ferrocenes C 65 (chlorocarbonyl and Ι,Γ-dichlorocarbonyl ferrocene)
Research Organic Chemical Co. Sun Valley, Calif.
Feature Intermediates for research and devel opment in pharmaceutical, chemical, drug, and polymer industries Chromium and vanadium powders for metallurgical applications and as catalysts Reacts as a mercaptan as well as an acid Gaseous compounds for introducing fluorocarbon group into a molecule Used to make gravity gradients for centrifugation, electrophoresis, and spe cific gravity determination For use in making high-temperature polymers and ferrocene intermediates
Available in commercial quantities unless otherwise noted.
BRIEFS An insulating lath board has been added to Monsanto's building prod ucts line. Designated Thermo-Lath, the new construction material is a sandwich board of polystyrene foam and a paperboard facing. It is de signed for use as a base for plaster on interior masonry and wood-frame con structed walls and ceilings. Accord ing to Monsanto, Thermo-Lath re duces sound transmission. It also re sists heat flow seven times better than does a 3 / 8 -in. gypsum lath.
A technically feasible method for re covering scandium from readily avail able domestic sources has been demon strated by the Bureau of Mines, U.S. Department of the Interior. Several thousand pounds of high-purity scan dium oxide can be recovered annually from a by-product sludge of molyb denum processing using hydrometallurgical techniques developed by BuMines. The bureau hopes to reduce the cost of producing scandium (now more than $1000 per pound) and expand its uses. Scandium is now used only in the form of an artificially radioactive isotope for analytical studies and as a tracer in oil-well drilling and pipeline applications. 82
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Previously undetected crystal struc tures have been found in group 5b metals alloyed with small amounts of other elements. Dr. Gareth Thomas and co-workers at the University of California (Berkeley) have been able to get diffraction-line patterns of tan talum, niobium, and vanadium alloyed with less than 0.2% of carbon, hy drogen, oxygen, or nitrogen. Such patterns are not detectable by x-ray or neutron diffraction. Dr. Thomas used an electron microscope and ro tated the metallic specimens. He hopes to determine the effect of these structures on the properties of metals.
NEW CHEMICALS Resin-bonded dry-film lubricant has been introduced by Fel-Pro, Inc., of Skokie, 111. The compound, C-300, can be used at temperatures from - 6 5 ° to 1200° F . The lubricant dries and cures in one hour without baking, the company says. It can be used with all types of metals, according to Fel-Pro. C 66
Sprayable, nonflammable solvent-type rubber cement has been developed by Imperial Adhesives, Inc., of Cincin nati, Ohio. Called Non-Flam, the
cement was developed to coat large areas of rubber, polyurethane, or bonded foam. The cement is also a heat-reactive adhesive that allows fabric and other material to be heatsealed to a precemented substrate by the addition of a heated nip roller, the company says. C 67
A copolymer converter film is being offered by Avisun Corp. According to the Philadelphia, Pa., company, the film retains all of the conventional properties of polypropylene, but has better impact and optical qualities. This film offers better clarity and stiffness than does polyethylene and longer shelf life and cold weather durability than does cellophane, the company says. C 68
Two-component sealant has been de veloped by Rubba, Inc. (New York, N.Y.). Called Rubba-Seal, the ma terial can be used to make products varying in flexibility, hardness, and elongation, the company says. It can be used at temperatures of —60° F. Rubba-Seal resists oils, acids, alkalies, and solvents. It can also be used as a water-proofing sealant for expansion joints and as an acid-resistant coating. C69
