Patent application number | Description | Published |
20090099284 | PIGMENTS AND POLYMER COMPOSITES FORMED THEREOF - 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 covalently bonded to a surface of the alumina hydrate particulate material. | 04-16-2009 |
20090136744 | APPLICATIONS OF SHAPED NANO ALUMINA HYDRATE AS BARRIER PROPERTY ENHANCER IN POLYMERS - A polymer composition having enhanced barrier properties includes a polymer base and alumina particulates dispersed within the polymer base. The alumina particulates have a secondary aspect ratio at least about 3:1. The polymer composition has an Oxygen Transfer Index of at least about 150. | 05-28-2009 |
20090170996 | FLAME RETARDANT COMPOSITES - A flame retardant polymer composite is disclosed. 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 | 07-02-2009 |
20090235591 | FIXED ABRASIVE ARTICLES UTILIZING COATED ABRASIVE PARTICLES - An fixed abrasive article is provided which includes a matrix material and abrasive particles embedded within the matrix material. The abrasive particles have a core-shell structure that includes a polycrystalline alpha alumina core and a shell layer overlying the polycrystalline alpha alumina core. The shell layer includes a material selected from the group consisting of silicon oxide and zirconium oxide. Also the polycrystalline alpha alumina core includes grains and having an average grain size of not greater than about 500 nm. | 09-24-2009 |
20090270249 | METHOD FOR FORMING A CATALYST CARRIER - A method of forming a carrier material suited to use in Fischer-Tropsch reactions includes forming a dispersion of first and second hydrated alumina materials in a liquid dispersant, such as an acid solution. The first alumina can be derived from an alkali aluminate, such as is formed in the Bayer reaction. The second hydrated alumina can be derived from high purity aluminum, such as via conversion to an alkoxide. The dispersion is spray dried to form particles which are heat treated to form a carrier material having low levels of impurities. | 10-29-2009 |
20120153547 | CERAMIC PARTICULATE MATERIAL AND PROCESSES FOR FORMING SAME - Processes for forming ceramic particulate material. The ceramic particulate material includes alumina particles, the particles having a specific surface area (SSA) not less than 15 m | 06-21-2012 |
20120168979 | METHOD OF FORMING A SHAPED ABRASIVE PARTICLE - A method for making abrasive grains, the method comprising mixing one or more solids with one or more liquids in a twin screw extruder to form a mixture, transferring the mixture to a high pressure piston extruder; and extruding the mixture from the high pressure piston extruder through a die to form an extrude. The method further includes segmenting the extrudate to form extruded shaped abrasive particles. | 07-05-2012 |
20130199105 | SHAPED ABRASIVE PARTICLE AND METHOD OF FORMING SAME - A method of forming a mixture including a ceramic material into a sheet, sectioning at least a portion of the sheet using a mechanical object and forming at least one shaped abrasive particle from the sheet, such that the at least one shaped abrasive particle can have a two-dimensional shape as viewed in a plane defined by a length and a width of the shaped abrasive particle selected from the group consisting of polygons, ellipsoids, numerals, Greek alphabet characters, Latin alphabet characters, Russian alphabet characters, complex shapes having a combination of polygonal shapes, and a combination thereof. | 08-08-2013 |
20130236725 | ABRASIVE PARTICLES HAVING COMPLEX SHAPES AND METHODS OF FORMING SAME - An abrasive grain is disclosed and may include a body. The body may define a length (l), a height (h), and a width (w). In a particular aspect, the length is greater than or equal to the height and the height is greater than or equal to the width. Further, in a particular aspect, the body may include a primary aspect ratio defined by the ratio of length:height of at least about 2:1. The body may also include an upright orientation probability of at least about 50%. | 09-12-2013 |
20130337262 | SHAPED ABRASIVE PARTICLES AND METHODS OF FORMING SAME - A method of forming a shaped abrasive particle includes applying a mixture into a shaping assembly within an application zone and directing an ejection material at the mixture in the shaping assembly under a predetermined force, removing the mixture from the shaping assembly and forming a precursor shaped abrasive particle. | 12-19-2013 |
20140144087 | SUBMICRON ALPHA ALUMINA HIGH TEMPERATURE BONDED ABRASIVES - A high temperature bonded abrasive includes alumina abrasive grits, and a vitreous bond matrix in which the alumina abrasive grits are distributed, the vitreous bond matrix having a cure temperature not less than 1000° C. The alumina abrasive grits include polycrystalline alpha alumina having a fine crystalline microstructure characterized by an alpha alumina average domain size not greater than 500 nm, and the alumina abrasive grits further include a pinning agent that is a dispersed phase in the polycrystalline alpha alumina | 05-29-2014 |
20140182217 | ABRASIVE PARTICLES HAVING COMPLEX SHAPES AND METHODS OF FORMING SAME - An abrasive grain is disclosed and may include a body. The body may define a length (l), a height (h), and a width (w). In a particular aspect, the length is greater than or equal to the height and the height is greater than or equal to the width. Further, in a particular aspect, the body may include a primary aspect ratio defined by the ratio of length:height of at least about 2:1. The body may also include an upright orientation probability of at least about 50%. | 07-03-2014 |
20140325917 | SHAPED ABRASIVE PARTICLE AND METHOD OF FORMING SAME - A method of forming a mixture including a ceramic material into a sheet, sectioning at least a portion of the sheet using a mechanical object and forming at least one shaped abrasive particle from the sheet, such that the at least one shaped abrasive particle can have a two-dimensional shape as viewed in a plane defined by a length and a width of the shaped abrasive particle selected from the group consisting of polygons, ellipsoids, numerals, Greek alphabet characters, Latin alphabet characters, Russian alphabet characters, complex shapes having a combination of polygonal shapes, and a combination thereof. | 11-06-2014 |