CABOT
CABOT C O R P O R A T I O N DEPT. CN-16, 125 HIGH ST., BOSTON, MASS. 02110 (617) 423-6000
L A B O R A T O R Y R E P O R T NO. 16
NOW... FROM CABOT FLAME RESEARCH
alon
Typical Properties of ALON Color and form X-ray structure Alumina content* Moisure content Ignition loss Metallic oxides (other than AI2O3) Average particle diameter Surface area
Al 2 0 3
An oxide with exciting possibilities — What can it do for your product? The unique properties of positive surface charge, large surface area, high purity and extremely small particle size make ALON a versatile and exciting new material with potential uses in many diverse industries. A fumed alumina of different crystalline forms consisting predominantly of the gamma modification, ALON is made by the hydrolysis of aluminum chloride in a flame process similar to that for making Cabot fumed silica, CAB-O-SIL®. ALON is an inorganic oxide with a surface charge that remains positive up to a pH level of 9.1, the isoelectric point. Each gram of ALON has a surface area of 100 square meters. This produces high functional activity from relatively small quantities. SUGGESTED USES FOR ALON TEXTILES — As a wool spinning aid, ALON has been found to considerably lessen end breakage and " f l y . " ALON substantially increases yarn breaking strength, permits the use of shorter stocks and higher productivity with less waste. The ALON particles form a strong bond with the negatively charged wool fibers, making them less susceptible to pulling apart. The same function is under investigation in cotton and synthetic fiber spinning. Its positive charge indicates ALON potential as an anti-static, anti-soiling and anti-pilling agent for synthetic fibers and blends. This same property may promote dyeability in certain hard-todye fibers. PAPER — Paper machine down-time is reduced when ALON is used as a de-sliming agent. The positive surface charge helps control build-up and deposition of pitch on rollers, and keeps agglomerates from depositing on the paper thereby improving quality. The high purity and good electrical properties make ALON an effective filler in specialty electronic capacitance papers. OTHER USES FERRITES — ALON improves cold temperature operation of ferrites used as armature cores in fractional hp motors.
LIGHT TRANSMISSION AID — ALON is suggested as an additive to phosphor coatings in fluorescent or cathode ray tubes to improve the light output on aging and where high efficiency light transmission is desired on incandescent bulbs. COSMETICS — Hair sprays may be improved by ALON because the positive surface charge reacts with negatively charged hair fibers. ELASTOMER REINFORCEMENT — ALON has demonstrated an ability to increase creep strength and reinforcement of adhesives and such elastomers as SBR, butyl, nitrile and neoprene rubbers. THICKENING A G E N T — I t s positive surface charge suggests ALON can be combined with CAB-O-SIL fumed silica to thicken polar liquids such as water. CERAMIC BODY — ALON can be used to improve strength and electrical properties. AIR POLLUTION CONTROL — ALON is being considered as an additive in fuel oils to reduce contaminant emission and minimize scale build-up on furnace firewalls and boiler tubes. HYDROPHILIC AGENT — ALON can be applied to normally hydrophobic surfaces such as plastic films and fibers, photographic films and offset printing plates to improve wettability and eliminate water spotting.
White powder 90% gamma 99% minimum 2.5% 4.5% 1% maximum 0.03 micron 100 square meters/gram
pH (10% aqueous suspension) Specific gravity Loose bulk density * Excludes physically and bined water
4.4 3.6 4 pounds/cu. f t chemically com-
Electrophoretic properties of ALON Streaming currents of 2 % dispersions of ALON in 0.01N sodium chloride solution are plotted as a function of pH.
>40
v
+30
\
+ 20 + 10 pH
\
0 3
4
5
8
6 7 -10
9
10
PH 11
\ \ \ \ *> '
20 -30 -40 -50
Current (Milliamperes)
Viscosity characteristics of ALON (10%, aqueous)
2
6
10
8
12
1-4-1
CABOT CORPORATION Dept CN*16, 125 HIGH ST., BOSTON, MASS. 02110
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Please send: D General brochure Q Textile applications brochure Q Sample P Please call me for appointment Teh \ am especially interested in .. ' • FREE Send for general brochure containing ideas for potential uses of ALON
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