Tronox LLC Patent applications |
Patent application number | Title | Published |
20140275442 | TITANIUM DIOXIDE PIGMENT AND MANUFACTURING METHOD - In one aspect, the invention provides a titanium dioxide pigment. The titanium dioxide pigment comprises a plurality of titanium dioxide particles, and a polymer deposited on the titanium dioxide particles for inhibiting agglomeration of the titanium dioxide particles in an aqueous based coating formulation. The titanium dioxide particles have anchoring moieties associated therewith for facilitating anchoring of the polymer to the particles. The polymer is a copolymer having anchoring groups for attaching to the anchoring moieties associated with the titanium dioxide particles and hydrophobic end groups for attaching to the resin of the coating formulation. In another aspect, the invention provides a method of manufacturing a titanium dioxide pigment. | 09-18-2014 |
20140261086 | PROCESS FOR MANUFACTURING TITANIUM DIOXIDE PIGMENTS USING ULTRASONICATION - A process for manufacturing titanium dioxide pigment is provided. The process comprises preparing an aqueous slurry of titanium dioxide particles. The process further includes deagglomerating the aqueous slurry of titanium dioxide particles using ultrasonication. | 09-18-2014 |
20140023573 | PROCESS FOR CONTROLLING CARBONYL SULFIDE PRODUCED DURING CHLORINATION OF ORES - The present invention provides for a process for handling carbonyl sulfide waste and waste metal halides produced in industrial processes and, more particularly chlorination processes. The process includes the steps of hydrolyzing the carbonyl sulfide to produce a waste stream containing hydrogen sulfide and sulfidizing the resulting hydrogen sulfide containing stream with a solution of the waste metal halides. The resulting metal sulfide and metal halide-containing stream can be neutralized before disposal of the produced waste solids. | 01-23-2014 |
20130161856 | METHODS OF PRODUCING A TITANIUM DIOXIDE PIGMENT AND IMPROVING THE PROCESSABILITY OF TITANIUM DIOXIDE PIGMENT PARTICLES - A method of producing a titanium dioxide pigment is provided. Also provided is a method of improving the processability of titanium dioxide particles without adversely affecting the rheological properties of the titanium dioxide particles. | 06-27-2013 |
20120232187 | Titanium Dioxide Pigments and Manufacturing Method - The invention provides a coated inorganic oxide pigment. The inventive coated inorganic oxide pigment comprises an inorganic oxide base pigment, a porous inorganic coating formed on the base pigment, and a dense inorganic coating formed on the base pigment. The porous inorganic coating and dense inorganic coating each consist essentially of a material selected from the group consisting of silica and alumina. In another aspect, the invention provides a method of manufacturing a coated inorganic oxide pigment. In yet another aspect, the invention provides a polymer composition comprising a base polymer, and a coated inorganic oxide pigment admixed with the base polymer. | 09-13-2012 |
20100025502 | Jet for Use in a Jet Mill Micronizer - The current invention provides an improved jet nozzle suitable for use in a micronizing jet mill or retrofitting to an existing jet mill. The improved jet nozzle incorporates a coanda effect inducing element to enhance entrainment of particles to be ground within the vortex created by the micronizing jet mill. When the jet mill uses steam to generate the jet, use of the improved nozzle will reduce energy costs by increasing the efficiency of the jet mill. | 02-04-2010 |
20080260627 | Methods of Controlling the Particle of Titanium Dioxide Produced by the Chloride Process - A process for manufacturing titanium dioxide by the chloride process is provided. In one embodiment, a particle size control agent comprising an ionizing agent such as potassium chloride is introduced into the reaction zone of the oxidation reactor to control the particle size of the titanium dioxide. In a first aspect, the effectiveness of the particle size control agent in controlling the particle size of the titanium dioxide is improved by adding the particle size control agent to at least one of the reactant streams at a sufficient distance upstream of the oxidization reactor to allow the ionizing agent to efficiently ionize and the particle size control agent to thoroughly admix with the stream(s) prior to entering the reaction zone. In a second aspect, the particle size control agent comprises an ionizing agent and fumed silica. In another embodiment, the amount of alumina added to the reaction zone of the oxidization reactor is increased in order to control the particle size of the titanium dioxide. | 10-23-2008 |
20080219087 | Fluid Mixing Apparatus and Method - Methods and apparatus are provided for influencing mixing of a first fluid injected through a slot into a second fluid flowing through a conduit, by automatically or remotely adjusting the slot width to provide at least a certain slot velocity of the first fluid being introduced into the conduit. In particular, methods and apparatus are provided for mixing control in injecting titanium tetrachloride into an oxygen stream in a process for making titanium dioxide. | 09-11-2008 |