Class 516/87 - Having colloid system stabilizing or preserving agent which is organic compound (e.g., deflocculant, antibacterial, esterification of unstable silicasols)

Subclass of Class 516 - Colloid systems and wetting agents; subcombinations thereof; processes of
Definition: Subject matter in which said colloid system of discontinuous
No. of patents: 31
Last issue date: 09/04/2007

Number	Title	Issue Date
7264728	Method of separating components in a sample using silane-treated silica filter media The present invention provides methods for separating one or more components of interest from a sample containing particulates and soluble materials. The method comprises the steps of: (a) filtering a sample through silica filter media whose surface silanol groups h...	09/04/2007
7053125	Controlled dispersion of colloidal suspension by comb polymers Comb polymers are used as dispersants to increase the stability of colloidal suspensions containing multivalent or high concentrations of monovalent ions. Stabilized colloidal suspensions and methods of forming stabilized colloidal suspensions are described, includi...	05/30/2006
6929705	Antimicrobial coated metal sheet The present invention relates to metallic sheets having an improved antimicrobial property and also related to a method of manufacturing such sheets. More particularly, it relates to the continuous coating on metallic sheets with a resin composition containing antim...	08/16/2005
6500870	Method for manufacturing of silica sols A method for production of high purity silica sols comprising the steps: (a) adding a phosphonic acid-based complexing agent to the silicic acid-containing solution forming complexes with metal cations present in said solution; (b) forming in said silicic...	12/31/2002
6417264	Cationic polymer-modified silica dispersion and production process for the same Provided is a cationic polymer-modified silica dispersion which comprises silica fine particles having an average particle diameter of less than 200 nm and a cationic polymer and which does not bring about coagulation of the silica particles. The above di...	07/09/2002
6343490	Processing entailing sol-gel fabrication of silica glass Silica sols exhibiting desirable yield-dilatancy are fabricated. A mixture comprising silica, water, and a pH-adjusting agent is provided, and the mixture is shear-mixed. The desirable properties of the resultant sol are attained by using a concentration ...	02/05/2002
6129949	Process for preparing organically modified aerogels using alcohols, wherein the resultant salts are precipitated The invention concerns a process for preparing organically modified aerogels, in which a) a silicic acid sol with a pH ࣘ4.0 is produced from an aqueous potassium silicate solution using at least one organic and/or inorganic acid; b) the resultant silici...	10/10/2000
5789148	Cell separation composition Disclosed are a kit, composition and method for cell separation. The kit includes a centrifugable container and an organosilanized silica particle-based cell separation suspension suitable for density gradient separation, containing a polylactam and steri...	08/04/1998
5651921	Process for preparing a water repellent silica sol A water repellent silica sol comprises colloidal silica particles of a size of 100 nm or less whose surfaces have been made water-repellent by an organic group-substituted silane. The water repellent silica sol is produced by a process which comprises rea...	07/29/1997
5603865	Copolymer dispersant composition for inorganic pigments The present invention is directed to a pigment dispersant composition for use with inorganic pigments in coating compositions. The dispersant composition includes a vinyl or acrylic copolymer and a transition metal or rare earth metal salt. The metal salt...	02/18/1997
5569318	Frictionizing composition There is disclosed a frictionizing composition for imparting long-term anti-slip properties to the surface of a paper product comprising an aqueous sol of colloidal silica, glycerin, and at least one agent selected from the group consisting of N-methyl py...	10/29/1996
5275652	Concrete additive comprising a multicomponent admixture containing silica fume, its method of manufacture and concrete produced therewith A multicomponent aqueous flowable admixture is formed with silica fume and stabilized with one or more high-range concrete water-reducing agents or one or more ordinary concrete water-reducing agents alone or in combination. The admixture is of particular...	01/04/1994
5246624	Aqueous colloidal dispersion of fumed silica, acid and stabilizer An aqueous colloidal dispersion of fumed silica, acid and stabilizer, having a fumed silica concentration of at least about 40% by weight. A process for making an aqueous colloidal dispersion is also disclosed....	09/21/1993
5230833	Low sodium, low metals silica polishing slurries A colloidal silica slurry comprising: a low metals ammonium-stabilized silica sol having the following characteristics: SiO2 present in the range between about 15 to about 50 weight percent; a pH in the range between about 8.5 to about 11.3; a ...	07/27/1993
5198490	Aqueous sheet silicate dispersions, use of these dispersions as coating assistants and water-dilutable coating compositions containing sheet silicates The invention relates to dispersions which are obtainable from sheet silicates, a protective colloid and an aqueous dispersant and are suitable for the incorporation of sheet silicates into water-dilutable coating compositions. The dispersions according t...	03/30/1993
5176752	Stabilized microsilica slurries and cement compositions containing the same Aqueous-based microsilica slurries having resistance to gelling and settlement of solids are provided. The slurries contain amino alcohols as stabilizing agents, the amino alcohols having the formula ##STR1## wherein R1 and R2 a...	01/05/1993
5100581	Method of preparing high-purity aqueous silica sol A high-purity stable aqueous silica sol is prepared which has an SiO2 concentration of from 30 to 50% by weight and which is substantially free from any other polyvalent metal oxides than silica and in which the colloidal silica has a mean part...	03/31/1992
5028270	Freeze-stabilized silica sol and its use as liquid for phosphate-based embedding compositions An aqueous silicic acid sol which is freeze-stabilized and which is useful for the production of phosphate-based embedding compositions used in dental technology, the aqueous silicic acid sol including from 25 to 50 weight percent of silicon dioxide; and ...	07/02/1991
4950502	Method of hydrophobing silica A method of producing hydrophobic colloidal silica is disclosed. The method comprises combining an aqueous colloidal silica dispersion, polyorganosiloxane, and anionic surfactant to yield a stable aqueous emulsion of hydrophobic colloidal silica. The emul...	08/21/1990
4902442	Stabilized mixtures of colloidal silica and soluble silicate and a method of producing porous silica compositions therefrom A prereaction mixture which is useful in the preparation of porous silica compositions with uniform pore sizes. The porous silica composition comprises a substituted nitrogen-containing siliconate, a colloidal silica and a soluble alkali silicate. By the ...	02/20/1990
4750942	Rinse aid The use of a non-plate-shaped colloid, e.g. a silica in a rinse-aid composition for use after a dishwashing operation reduces the drying time and the formation of spots on the rinsed articles when dry....	06/14/1988
4519844	Water soluble biogum compositions and hydrosols prepared therefrom Compositions of matter, desirably in powder form, adapted for ready dispersion/dissolution in an aqueous medium, and which rapidly provide maximum viscosity values therefor, are comprised of an intimate admixture of a water soluble biogum heteropolysaccha...	05/28/1985
4478742	Preparation of a ferric acetate coated silica sol by selective anion exchange A method of producing iron acetate coated silica sol which comprises the steps of passing a mixture of ion-free colloidal silica and an inorganic iron salt in contact with a strong base anion exchange resin in the acetic acid salt form under conditions wh...	10/23/1984
4452723	Non-skid surface compositions for paper products A composition is disclosed, which when applied to the surface of a paper product, such as a corrugated board, improves the slip-angle. The composition, consisting of an aqueous suspension of colloidal silica and urea, finds particular utility in products ...	06/05/1984
4418111	Non-skid surface compositions for paper products A composition is disclosed, which when applied to the surface of a paper product, such as a corrugated board, improves the slip-angle. The composition, consisting of an aqueous suspension of colloidal silica and urea, finds particular utility in products ...	11/29/1983
4352744	Protecting colloidal silica aquasols from bacterial degradation Colloidal silica aquasols containing about 200-675 ppm 1-(3-chloroallyl)-3,5,7-triaza-1-azoniaadamantane chloride; 100-350 ppm 1,2-benzisothiazolin-3-one; or 160-800 ppm of 1,3,5-triazine-1,3,5 (2H,4H,6H)-triethanol are protected from contamination by mic...	10/05/1982
4343717	Process for the preparation of stable silica sol Stable, colloidal, silica sol is provided by a process which comprises vigorously mixing a slurry of calcium silicate with a dilute acid having a pKa value of less than about 8, such as sulfuric acid, and thereafter separating the sol from the ...	08/10/1982
4321243	Method of producing stabilized aqueous dispersions of silica fume Silica fume, the by-product from the manufacture of silicon and ferrosilicon alloys, is dispersed in water and the aqueous dispersion is stabilized to retain its fluidity and redispersibility by treatment with an acid or with a chelating agent....	03/23/1982
4248600	High solids aqueous silica dispersion A method for increasing the bulk density of silica. Acid is added to an aqueous silica wet cake slurry to bring the pH to about 1.8 to 4.0, and dry fine particle silica is added with an agitator rpm of at least 2000 rpm. The acid and silica are alternatel...	02/03/1981
4196015	Rewetting solution and method for aluminizing image display faceplates This invention relates to improvements in the art of aluminizing the phosphor screens of image display devices such as television cathode ray picture tubes. A solution for rewetting a phosphor-bearing image display faceplate prior to aluminizing comprises...	04/01/1980
3961968	Method for producing hybrid binder for ceramic molds Methods of preparing Hybrid Silicate Binders are shown by admixing the following materials: 1. a basic or acidic colloidal silica sol suspended in water or glycol ether; 2. an organic silicate, such as ethyl silicate, hydrolyzed with water; 3. a mineral acid o...	06/08/1976

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Class 516/87 - Having colloid system stabilizing or preserving agent which is organic compound (e.g., deflocculant, antibacterial, esterification of unstable silicasols)