Showing papers by "Cabot Corporation published in 1969"
TL;DR: In this paper, the authors measured the size, anisometry and bulk size of carbon black primary aggregates by electron microscopy and calculated the weight-average parameters with the aid of a relation between projected area and number of particles per aggregate, based on computer simulated flocs.
152 citations
Patent•
04 Feb 1969TL;DR: In this article, a reinforced composite of carbon black and silica is provided by fluid energy milling of the combined ingredients, which display improved cut growth resistance characteristics in natural rubber formulations.
Abstract: Superior rubber reinforcing compositions comprising mixtures of carbon black and silica are provided by fluid energy milling of the combined ingredients. Among other attributes the resulting reinforcing composition display improved cut growth resistance characteristics in natural rubber formulations.
28 citations
Patent•
15 Jan 1969TL;DR: In this paper, a rod-like supply of the treating agent is introduced into the molten metal flowing in the passageway under conditions insuring a disturbed but nonturbulent flow of the liquid.
Abstract: A molten metal or alloy is inoculated with metallic treating agent by pouring the molten metal into a troughlike passageway and by introducing a rodlike supply of the metallic treating agent into the molten metal flowing in the passageway under conditions insuring a disturbed but nonturbulent flow of the molten metal and resulting uniform distribution of the treating agent therein.
26 citations
Patent•
07 Jul 1969TL;DR: In this article, thermally responsive current regulating devices comprising conductive polymeric compositions are described, where electrodes attached to a current controlling polymeric composition comprising a polymer and having dispersed therein the quantity of submicron sized particulate conductive filler.
Abstract: The present invention concerns thermally responsive current regulating devices comprising conductive polymeric compositions. Broadly, the devices of the invention comprise electrodes attached to a current controlling polymeric composition comprising a polymer and having dispersed therein the quantity of submicron sized particulate conductive filler. The electrical resistance of such devices varies substantially and reproducibly with variation in temperature through the glass transition temperature range of the polymeric constituent.
22 citations
Patent•
18 Nov 1969TL;DR: In this article, an improved method for the detection of water and land borne spills by burning was proposed, which is more amenable to PHYSICAL REMOVAL THEREOF from the WATER or LAND MASS than the BURNED RESIDUUM of UNTREATED SPILLS.
Abstract: THE PRESENT INVENTION PROVIDES AN IMPROVED METHOD FOR THE ELIMINATION OF WATER AND LAND BORNE SPILLS BY BURNING. BROADLY, CERTAIN PARTICULATE SOLIDS ARE APPLIED TO THE SPILL AND THE RESULTING SYSTEM IS THEREAFTER FIRED. SUCH TREATED SPILLS ARE MORE EASILY IGNETED AND THE COMBUSTION THEREOF IS MORE COMPLETE THAN EXPERIENCED WITH UNTREATED SPILLS. WHEN CERTAIN CONDITIONS PERTAINING TO THE TYPE AND AMOUNT OF TREATING AGENT APPLIED TO THE SPILL ARE MET EVEN FURTHER BENEFITS ACCRUE TO THE PROCESS OF THE INVENTION. SUCH BENEFITS RESIDE IN IMPROVED PHYSICAL CHARACTER OF THE BURNED RESIDUE WHICH IS MORE AMENABLE TO PHYSICAL REMOVAL THEREOF FROM THE WATER OR LAND MASS THAN THE BURNED RESIDUUM OF UNTREATED SPILLS.
13 citations
Patent•
29 May 1969TL;DR: In this article, the authors show how to render water-replent materials by applying them to the surface of a surface and using colloideal metal or metaloid oxides.
Abstract: SAID POLYMERIC MATERIALS ARE RENDERED WATER-REPELLENT BY APPLYING TO THE SURFACE THEREOF CERTAIN COLLOIDAL METAL OR METALLOID OXIDES.
10 citations
Patent•
22 Dec 1969TL;DR: The mineral acid leaching of a tin slag or other metallurgical product containing tantalum and columbium oxides as well as a significant amount of silica is improved by adding a controlled amount of hydrofluoric acid prior to the filtration.
Abstract: The mineral acid leaching of a tin slag or other metallurgical product containing tantalum and columbium oxides as well as a significant amount of silica is improved, with resulting increase in the total content of tantalum and columbium oxides in the leached product obtained by filtration, by adding a controlled amount of hydrofluoric acid prior to the filtration.
9 citations
Patent•
12 Mar 1969TL;DR: In this paper, a procedure for coating an IRON, NICKEL, or COBALT base alloy is described, which is based on TREATING a surface of the SELECTED ALLOY with a mixture of 10 to 30 weight per cent magnesium with the balance being an aluminumMAGNESIUM.
Abstract: ALLOY IN A NON-OXIDIZING ATOMOSPHERE TOA TEMPERATURE ABOVE ABOUT 1800*F. TO CAUSE THE ALUMINUM-MAGNESIUM MATERIAL TO COAT AND DIFFUSE INTO THE TREATED SURFACE OF THE IRON, NICKEL OR COBALT BASE ALLOY. A PROCESS FOR COATING AN IRON, NICKEL OR COBALT BASE ALLOY IS PROVIDED WHICH COMPRISES TREATING A SURFACE OF THE SELECTED ALLOY WITH A MATEIAL CONSISTING ESSENTIALLY OF FROM ABOUT 10 TO 30 WEIGHT PERCENT MAGNESIUM WITH THE BALANCE BEING ALUMINUM AND THEN HEATING THE SO-TREATED
8 citations
Patent•
03 Feb 19697 citations
Patent•
07 Feb 1969TL;DR: In this paper, a method for waterproofing metallic surfaces by applying the hydrophobic reaction product of a particulate metal oxide or metalloid oxide and an organosilicon compound is described.
Abstract: A method is disclosed for waterproofing metallic surfaces by applying thereto the hydrophobic reaction product of a particulate metal oxide or metalloid oxide and an organosilicon compound.
4 citations
Patent•
12 Aug 1969TL;DR: In this paper, the use of carbon black pigments as pigments in the preparation of paint and laconic compositions is discussed. But this is restricted to non-flooding and non-tinting.
Abstract: THIS DISCLOSURE RELATES TO THE USE OF CERTAIN HALOGENATED CARBON BLACKS AS PIGMENTS IN THE PREPARATION OF PAINT AND LACQUER COMPOSITIONS WHICH POSSESS EXCELLENT NON-FLOODING PROPERTIES AND EXCELLENT TINTING PROPERTIES.
TL;DR: In this paper, an instrument to measure thermal conductivity of cured rubber stocks is described, which is designed around a calibrated heat flux probe which measures the sample's heat flux, the temperature drop across the sample, and the sample thickness values.
Abstract: An instrument to measure thermal conductivity of cured rubber stocks is described. The apparatus can be used with readily available equipment or additional equipment may be purchased. The results obtained are as accurate and precise as those obtained using other instruments and can be done at a rate of three samples per hour. The apparatus is designed around a calibrated heat flux probe which measures the sample's heat flux. The heat flux, the temperature drop across the sample, and the sample thickness values permit conversion of the above data into a thermal conductivity value. Thirteen samples of Butyl rubber in a curing bladder formulation with 40-part loadings of various carbon blacks were prepared and tested. The thermal conductivity values obtained varied from 0.096 to 0.117 (Btu)/(ft2) (hr)(°F/ft) over a range of 95° F to 212° F with an overall relative standard deviation of 1.2%. The thermal conductivity of the above samples were also measured on a modified apparatus over a temperature r...
Patent•
24 Feb 1969TL;DR: In this article, the use of chromium-oxide containing titanium dioxide reaction products as ultraviolet stabilizers for polyolefins was discussed, and the results showed that the reaction products can be used as an effective ultraviolet stabilizer.
Abstract: This disclosure relates to the use of certain homogeneous chromium-oxide containing titanium dioxide reaction products as ultraviolet stabilizers for polyolefins.