Patent application number | Description | Published |
20100012898 | METHOD FOR CONTROLLING THE SIZE OF RARE-EARTH-DOPED FLUORIDE NANOPARTICLES - A method wherein an aqueous solution of a fluoride, an aqueous solution of a Group 2 or Group 3 metal salt, and an aqueous solution of a rare-earth metal dopant are combined to form a precipitate of a rare-earth doped Group 2 or Group 3 metal fluoride, and wherein increasing the concentration of the rare-earth dopant cation increases the resulting particle size, and wherein decreasing the concentration of the rare-earth dopant cation decreases the particle size. | 01-21-2010 |
20100019200 | METHOD FOR PREPARING RARE-EARTH-DOPED FLUORIDE NANOPARTICLES OF CONTROLLED SIZE - A method wherein an aqueous solution of a fluoride, an aqueous solution of a Group 2 or Group 3 metal salt, and an aqueous solution of a rare-earth metal dopant are combined in a plurality of continuous feed streams to form a series of precipitates of a rare-earth doped Group 2 or Group 3 metal fluoride, and wherein the member of the series differ by the concentration of the associated rare-earth dopant cation in the feed stream, and wherein the series so prepared defines the threshold concentration range above which operation of the process results in a minimization of the particle size variability caused by small perturbations in the concentration of the rare-earth dopant. | 01-28-2010 |
20110024683 | METHOD FOR CONTROLLING THE SIZE OF RARE-EARTH-DOPED FLUORIDE NANOPARTICLES - II - For a continuous process for preparing rare-earth doped Group 2 or Group 3 metal fluoride nanoparticles comprising a confluence of feed streams of reagents, a method is provided for controlling particle size by adjustment in the flow rate of the streams. | 02-03-2011 |
20130344338 | PROCESS FOR THE SURFACE TREATMENT OF COLLOIDAL SILICA AND PRODUCTS THEREOF - This invention relates to processes in which certain aminosilanes are used to surface-modify colloidal silica nanoparticles, while reducing or virtually eliminating the propensity of the silica nanoparticles to gel, agglomerate, or aggregate. The surface-modified colloidal silica nanoparticles can be readily dispersed in polymers to provide nanocomposites with one or more enhanced, desirable properties. | 12-26-2013 |
20130345461 | AMINE-ACCELERATED PROCESS FOR THE SURFACE TREATMENT OF COLLOIDAL SILICA AND PRODUCTS THEREOF - This invention relates to the use of certain amine promoters in processes for surface-treating colloidal silica nanoparticles with selected aromatic aminosilanes, aromatic aminoalkylsilanes, and secondary and tertiary aliphatic aminosilanes. This process provides surface-modified nanoparticle colloidal silica without causing the silica nanoparticles to gel, agglomerate, or aggregate. | 12-26-2013 |
20140005313 | ACRYLIC ACID POLYMER NANOCOMPOSITES FROM AMINOSILANE-MODIFIED COLLOIDAL SILICA | 01-02-2014 |
20140162916 | SLURRY TECHNIQUE FOR PRODUCING FLUOROPOLYMER COMPOSITES - A fluoropolymer composite comprising at least one fluoropolymer and particulate filler material is formed using a slurry process, in which the particulate filler material is first dispersed in a polar organic liquid, which is then combined with a suitable particulate fluoropolymer. The combination is dried to form a composite powder material. The composite powder material, with optional addition of another fluoropolymer, is processed to form a fluoropolymer composite body. The process can be carried out with either melt-processible or non-melt-processible fluoropolymers. | 06-12-2014 |