tations whenever they occur on the surface. Based on phenolic resins, Filaplast may be applied by putty-knife or squeegee or may be thinned lor spray application. It sands easily and dries in several hours. It forms an ideal base coat for enamels and lacquers without lifting. Filaplast is flexible ami moisture resistant and may be used on molded fiberglas and plastic products. p 4
For further information on any item mentioned here, fill out coupon on p. 3750*
Trial Lot Quantities of Diallylcyanamide The American Cyanamid Co. has announced the introduction of trial lot quantities of diallylcyanamide. This now material is a liquid having a boiling point of 222° C. and a freezing point below —70° C. Less than 1% soluble in water at 28° C , diallylcyanamide is niiscible with most organic solvents and acts as a solvent for most natural and synthetic resins. The chemical reactions of diallylcyanamide are based mainly upon the reactivity of the nitrile group with compounds containing active hydrogen, such :is water, amines, alcohols, and hydrogen sulfide. In addition to diallyl«ay:inamido. the dimethyl-, diethyl-, and di isop ropy Icyana mides are also available in experimental quantities. It is felt that all these compounds may be of interest to the paint, paper, petroleum, plastics, rubber, and textile industries. i» i
metal. Agile hot-gas welding (an be applied with either a gas flame or electrically heated equipment. The method outlined above possesses outstanding advantages in the welding of thermoplastics. Unit assemblies heretofore too costly to be molded because of die costs or considered impracticable by the extrusion method can now be cut from plastic sheet and plastic tubing and then fabricated into complete assemblies by hot-gas welding, it is said. p 3
Chemical Specialties ies
A new polyester plasticizer said to combine many desirable properties of both the monomeric and polymeric types has been put into full plant-scale production by the Rohm «fe Haas Co. Designated Paraplex G-60, the new product is characterized by low viscosity, high plasticizing efficiency, good behavior at low temperatures, light color, broad compatibility, and low cost. As a plasticizer in polyvinyl chloride compounds, the new G-60 is said to bring low-temperature flexibility to polyvinyl sheet and film stocks. In part because of its low viscosity, it has demonstrated its usefulness in the preparation of vinyl dispersion compounds such as organosols and plastisols. Also, it has been found to exert a useful stabilizing action on polyvinyl chloride—type resins, producing compounds which appear t o offer significant advantages by eliminat-
I
Brooklyn Varnish Mfg. Co.. Inc., has announced Tuf-On Filaplast for tihcrglus and plastics. It performs the dual function of adhering tenaciously to fibcrgjlas and plastic surfaces and of filling inden-
COMMERCIALLY
Plastic
AVAILABLE
Welding
American Agile Corp. has announced the formation and operation of their new plastics division for the welding and flame-spraying of plastics. Thermoplastics such as saran. Polythene, Geon, and Vistanex can be joined together under the Agile hot-gas welding method by butt-welding and fillet welding similar to the welding applications employed in the arc welding of sheet
QUANTITY-PRODUCTION
CHLORAL CCI3 • CHO
Better Color Rendition in Fluorescent Lighting
Expanded production now makes improved quality a n h y drous stabilized Chloral a v a i l a b l e in drums, carloads or t a n k cars. This highly reactive substituted o l d e h y d e is continually finding n e w uses a s a reactant in the manufacture of plastic, a g r i c u l t u r a l , pharmaceutical a n d other products. Westvaco Technical Bulletin # 2 0 6 contains 2 8 p a g e s o f h e l p f u l d a t a o n C h l o r a l . It g i v e s
H. C. 9Froelich, scientist in General Electric s lamp development laboratory, removes a sample of phosphor from his white-hot laboratory furnace* Dr. Froelich is credited with the development of the DR phosphor, a double-activated calcium phosphate, used in new G-E fluorescent lamps to improve their color rendition P 2
typical reactions w i t h Hydrocarbons, H y d r o x y l Compounds, Carbonyl Compounds, Acids, A m i n e s , other Nitrogen C o m pounds and Organo-metallic Compounds. Included also is a b i b l i o g r a p h y of some 2 5 0 references on the use o f C h l o r a l . We will be pleased to send you o copy of this bulletin and to open our files of technical data on Chloral for yourj study. The coupon below is for your convenience.
{WESTVACO CHEMICAL 1
DIVISION
FOOD MACHINERY AND CHEMICAL CORPORATION
1 I GCNfftAl
OFFICES
•
40S
LEXINGTON
AVENUE.
NEW
YORK
17
J Please send me a copy of Westvaco Technical Bulletin *206 J ADDRESS. NAME COMPANY i i
VOLUME
2 7,
NO.
50
.
DECEMBER
.-J
12,
1949
3739
PRODUCTS
TO INCREASE
ing such objectionable characteristics as staining, opacifying, and spewing, often associated with the use of conventional stabilizers. p&
GRDA #
low Cost Hydre-ifectric Power firmed op
bf steam—With high load factor, rate as low as 5.3 mills per K W H . J± HYORO-EUECTRIC POWER PLANT
#
^ T STEAM POWER PLANT
gallons daily at Cost of Production. # Process Steem-220,000 Ibs./hr at 1 5 0 lbs. at Cost of Production.
Adequate Water Supply -
75
million
# labor — Excellent situation for skilled and semi-skilled. #
Sanitation — Fire Protection — Drainage
# Plant locations — Transportation
Write for Detailed Industrial Survey of Northeastern Oklahoma. This Service is Free!
Here in the center of the growing Southwest the GRDA District offers every facility you need to build or relocate your plant, large or small. These Services and Facilities are available on a non-profit basis.
GRAND RIVER D A M
AUTHORITY
VINITA, OKLAHOMA A N AGENCY OF THE STATE OF OKLAHOMA
M>tvi* self-contained
DOWTHERM unit ALL-IN-ONE | PACKAGE NO EXTRA VAPORIZER NO EXTRA PIPING NO EXTRA PUMPS FOR OUR INFORMATIVE BULLETIN P K - 1
GROEN MFG. CO. 3740
AND PROCESSES
COMPLETELY SELF-CONTAINED! N o separate Dowtherm vaporizer required. . . . no elaborate p i p i n g . . . . n o pumps! And N O VAPOR LEAKAGE! It's an all-in-one package unit ready t o operate as received. Vapor chamber is charged with DOWTHERM at our factory then evacuated and '•'HERMETICALLY SEALED! Vapor can't escape. Heat transfer at temperatures below atmospheric boiling point of Dowtherm is easily accomplished with complete control up to 6 5 OF on the product. Gas o r electric models. Heavy duty construction. Typical of the craftsmanship distinctive of GROEN units for half a century. Read the complete details in our Bulletin PK-1. Write today for a copy.
\ LE21 W
Ar
C H E M I C A L
Three new plastics and resin products have recently been announced simultaneously by the Plaskon Division of Libbey-Owens-Ford Glass Co. The newly announced products include a new paper-treating resin, an addition to the family of alkyd plastic molding compounds first announced a year ago. and a new fast-curing resin for the abrasive*, industry. For the paper industry Plaskon is producing an aminoplast wet-strengthening resin which is neither a straight urea nor a melamine and yields approximately twice the wet-strengthening effect of a urea at a cost well under melamine. Greater
