Class / Patent application number | Description | Number of patent applications / Date published |
423338000 | By gelling | 14 |
20090004089 | Silica gel manufacturing method and gels made thereby - New silica gel materials and novel methods of producing such are provided. The method itself entails a manner of mixing the reactants together in a one-pot process such that the time required for aging is reduced without compromising the ability to target pore size production. In such a way, the pH of the reaction drives pore size development, thereby permitting a more efficient process to be followed in terms of expensive drying/heating steps being reduced timewise, if not altogether. Furthermore, in one embodiment, the resultant gel materials exhibit a certain pore size minimum while simultaneously exhibiting a degree of softness heretofore unavailable. As such, not only is this novel method more efficient in silica gel manufacture, but the resultant materials are completely novel as well. The gel materials made therefrom may be utilized in a variety of different end uses, such as cooking oil filtration, soft skin cleansers, dental abrasives, and the like. Methods of production and use, as well as the novel gel materials themselves, particularly caustic and composite gels, are thus encompassed within this invention. | 01-01-2009 |
20090123358 | Process for the Production of Monoliths by Means of the Sol-Gel Process - Process for the production of monoliths by means of the sol-gel process, comprising the following steps:
| 05-14-2009 |
20090169456 | Apparatus for Manufacturing Nanoporous Silica Method Thereof - The present invention relates to an apparatus and a method for manufacturing amorphous nanoporous silica enabling mixing of source materials with accurate equivalence ratio by generating an eddy current using high-speed reaction nozzles and capable of controlling physical properties using a continuous circulation polymerizer which performs high-speed stirring and low-speed stirring and amorphous nanoporous silica prepared by the method, which has a BET surface area of 100-850 m | 07-02-2009 |
20100003182 | PELLITIZED SILICA - Pelletized silica particles characterized by a round shape and a monomodal particle size distribution are produced by dispersing silica particles into water, adding water to the dispersion, mixing with alkoxisilane, pouring the mixture into an organic solvent, filtering and washing the silica particles obtained. The pelletized silica particles can be used to produce glass monoliths. | 01-07-2010 |
20100119432 | Method for Preparing Hydrophobic Aerogel and Hydrophobic Aerogel Prepared Therefrom - A method for preparing a silica aerogel in the form of permanently hydrophobic powder in a short time, wherein the silica aerogel has a high specific surface area and high functionality, and is prepared by subjecting a wet gel to a solvent exchange process and a silylizing process in a mixture solvent including a silylizing agent at the same time, the wet gel being prepared using a water glass as a raw material and adding a surfactant at a room temperature. | 05-13-2010 |
20100172815 | Method of Manufacturing Superhydrophobic Silica-Based Powder - Disclosed is a method of manufacturing superhydrophobic silica-based powder, including adding a water glass solution, which is not subjected to ion exchange, serving as a precursor, with an organosilane compound having an alkaline pH and an inorganic acid to thus subject the water glass solution to surface modification and gelation, thereby producing hydrogel, immersing the hydrogel in a nonpolar solvent to thus subject the hydrogel to solvent exchange and Na | 07-08-2010 |
20100233061 | METHOD OF FABRICATING SUPERHYDROPHOBIC SILICA CHAIN POWDERS - Disclosed herein is a method of fabricating superhydrophobic silica-based powder, comprising: forming a hydrogel by adding an organosilane compound having alkaline pH and an inorganic acid to a non-ion-exchanged water glass solution, which is a precursor, to form a mixed solution and then surface-modifying and gelating the mixed solution; dipping the hydrogel into a nonpolar solvent to solvent-exchange the hydrogel and remove sodium ions (Na+) therefrom; and drying the solvent-exchanged hydrogel through a fluidized bed drying method under normal pressure or reduced pressure to fabricate aerogel powder. According to the method of fabricating a superhydrophobic silica-based powder of the present invention, the process thereof is very simple and economical. Therefore, the present invention is expected to be industrially important. | 09-16-2010 |
20100316550 | METHODS AND COMPOSITIONS FOR PREPARING SILICA AEROGELS - Cross-linked sol-gel like materials and cross-linked aerogels, as well as methods for making such cross-linked sol-gel like materials and cross-linked aerogels are described. | 12-16-2010 |
20120225003 | METHOD OF PREPARING SILICA AEROGEL POWDER - A method of preparing silica aero-gel powders having a short preparation time and stable preparation processes. In the method, the silica aerogel powders are generated by using a water glass solution, an inorganic acid, an organosilane compound and an organic solvent. The method includes dispersion-solution generating, gelating and solvent exchanging and drying. In the dispersion-solution generating, a dispersion solution is generated by dispersing the water glass solution and the organosilane compound in the organic solvent. In the gelating and solvent exchanging, silica hydrogel is generated by adding the inorganic acid to the dispersion solution and simultaneously performing gelating and solvent-exchanging. In the drying, the silica aerogel powders are generated by drying the silica hydro-gel. | 09-06-2012 |
20130330262 | METHOD FOR PRODUCING POROUS SILICA MATERIAL - A method of producing a porous silica material includes: preparing a raw material solution containing silicon alkoxides including diisobutyldimethoxysilane and tetramethoxysilane in such a mass ratio that a mass of the diisobutyldimethoxysilane is 0.25 or more and 1 or less per mass of the tetramethoxysilane, and a solvent; obtaining a wet gel by adding, to the raw material solution, an aqueous solution containing a catalyst for promoting hydrolysis and condensation polymerization of the silicon alkoxides, the aqueous solution having a pH of 8.9 or more and 11.3 or less; washing the wet gel; and drying the washed wet gel under supercritical conditions. | 12-12-2013 |
20140161707 | METHOD FOR PRODUCING A SPINNABLE SILICA SOL MATERIAL - In a process for producing a spinnable silica sol material, a viscosity value V | 06-12-2014 |
20150321167 | Method for Preparing Solid Amine Gas Adsorption Material - The present invention relates to a method for preparing a solid amine gas adsorption material. The method synthesizes a porous solid amine gas adsorption material that loads organic amine evenly in one step. In the method, a certain amount of acidic gas is introduced while organic amine molecules are introduced into a silicate solution as template agents, which not only makes sizes of SiO | 11-12-2015 |
20150321921 | Silica Aerogels And Their Preparation - Silica aerogels with improved properties are disclosed together with methods for synthesizing such aerogels. The improved properties include lower thermal conductivity (better insulating capacity), lower acoustic velocity, lower dielectric constant and improved ductility. Greater tunability of the refractive index can also be achieved. The silica aerogels are prepared by a sol-gel processing method that provides better control of the formation or aerogel structures. Generally speaking, the improvements arise from control of the synthesis to create a morphology of primary clusters and diverse-sized secondary clusters of dense silica aerogels separated by less densely packed regions. By providing a broader range of secondary clusters and/or pore sizes and loose connectivity between clusters, reductions can be achieved in thermal conductivity and flexural modulus. | 11-12-2015 |
20150360961 | XEROGEL PRODUCTION METHOD - A xerogel production method includes: adding, to water glass, a basic silicic acid solution having a sol with a particle size between a particle size of the water glass and a particle size of colloidal silica, to acidify and solate the water glass, and polycondensing the solated water glass at 20° C. to 90° C., to obtain a hydrogel; growing the hydrogel by leaving the hydrogel for a certain time period at a constant temperature; hydrophobizing the hydrogel; and drying the hydrophobized hydrogel. | 12-17-2015 |