Cabot Corporation

About: Cabot Corporation is a company organization based out in Boston, Massachusetts, United States. It is known for research contribution in the topics: Carbon black & Carbon. The organization has 1279 authors who have published 1399 publications receiving 36736 citations.

Method of preparing an aggregate metal oxide particle dispersion having a desired aggregate particle diameter

Abstract: A method of preparing a dispersion of aggregate metal oxide particles having a pre-selected average aggregate particle diameter comprising pre-selecting a desired percent-reduction in the average aggregate particle diameter of the metal oxide particles, providing a dispersion standard pertaining to a dispersion of the aggregate metal oxide particles, wherein the dispersion standard correlates (i) the solids concentration of the dispersion with (ii) the percent-reduction in the aggregate particle diameter of the aggregate metal oxide particles that occurs when the dispersion is milled in a high-shear mixer, and preparing and milling a dispersion of the aggregate metal oxide particles in a high-shear milling device at a solids concentration that is within 10% of the solids concentration determined by the standard to provide a dispersion of aggregate metal oxide particles having the desired average aggregate particle diameter. Also provided is a method for reducing the average aggregate particle diameter of aggregate metal oxide particles, and a dispersion prepared by the method.

Method for measuring non-porous surface area of carbon black

Abstract: An automated method for measuring the non-porous surface area of carbon black is disclosed. The method comprises passing a small sample of a CTAB-carbon black dispersion through a disposable filter to separate the carbon black with adsorbed CTAB from the filtrate containing unadsorbed CTAB. The filtrate next passes through a measuring loop and a high pressure liquid chromatography column to separate the CTAB from the other filtrate components. The CTAB is next sensed by a detector and an integrator calculates the amount of CTAB adsorbed by the carbon black and the non-porous surface area of the carbon black. The integrated apparatus for carrying out this method is also described. Once the carbon black and the CTAB are mixed, there is no further handling of the sample. The system is entirely automated and takes only a few minutes for the CTAB area determination. Measuring temperatures can also be fixed. This results in much more reproducible CTAB numbers for a particular carbon black.