Abstract:
PROBLEM TO BE SOLVED: To provide flame retardant polymer composites.SOLUTION: The composite includes a polymer base material and a flame retardant filler provided in the polymer base material, the flame retardant filler containing seeded boehmite particulate material having an aspect ratio of not less than 3:1.
Abstract:
A boehmite particulate material is disclosed. The material is formed by a process that includes providing a boehmite precursor and boehmite seeds in a suspension, and heat treating the suspension to convert the boehmite precursor into boehmite particulate material. The boehmite particulate material has an aspect ratio of not less than 3:1.
Abstract:
The disclosure describes a surface coating solution having a surface coating base and a boehmite particles provided in the surface coating base. The boehmite particles comprise mainly anisotropically shaped particles having an aspect ratio of at least 3:1.
Abstract:
A composite material includes a polymer matrix and a pigment dispersed in the polymer matrix. The pigment includes an alumina hydrate particulate material and a dye. The dye is convalently bonded to a surface of the alumina hydrate particulate material.
Abstract:
Un artículo abrasivo fijo que comprende: un material de matriz (302; 401) y partículas abrasivas (306; 406) incrustadas en el material de matriz, teniendo las partículas abrasivas una estructura núcleo-envoltura que incluye un núcleo de alúmina alfa policristalino (203; 307; 403) y una capa de envoltura (201; 309; 405) que tiene una porosidad no mayor de un 10 % en volumen que reviste el núcleo de alúmina policristalino y comprendiendo un material policristalino seleccionado del grupo que consiste en óxido de silicio y óxido de circonio, comprendiendo el núcleo de alúmina alfa policristalino granos (205) que tienen un tamaño de grano promedio no mayor de 500 nm, en el que la capa de envoltura comprende no menos de un 95 % en volumen de óxido de silicio o no menos de un 95 % en volumen de óxido de circonio.
Abstract:
An alumina particulate material is disclosed, including particles comprising transitional alumina having an aspect ratio of not less that 3:1 and an average particle size of not less than 75nm. Also disclosed are fabrication techniques based on seeded processing pathways.
Abstract:
Disclosed is a surface coating solution comprising: a water-based solution including polymer in an emulsion; and activated boehmite particles provided in the water-based solution, the boehmite particles comprising mainly anisotropically shaped particles having an aspect ratio of at least 3:1; wherein the surface coating solution has flow and levelling of at least 6; wherein the surface coating solution has a sag resistance greater than 7 mils. The activation of the boehmite particles may be achieved by formation of salts with surface nitrates located on the boehmite particles or adding amines. Ammonium hydroxide, alkali and alkali earth metal salts such as magnesium sulfate and calcium sulfate, thickening clays such as nanoclays, or colloidal silica may be added to activate the boehmite particles. Activation may be carried out by adding substrate particles having surface charge opposite that of the boehmite particles (e.g., colloidal silica is negatively charged, thereby interacting with positively charged boehmite particles).
Abstract:
Material compuesto que incluye una matriz polimérica y un pigmento disperso en dicha matriz polimérica. El pigmento incluye un material particulado de alumina hidratada y un colorante. El colorante está unido de forma covalente a la superficie del material particulado de alumina hidratada.