ASHLAND-SÜDCHEMIE-KERNFEST GmbH Patent applications |
Patent application number | Title | Published |
20140345864 | METHOD FOR PRODUCING COATED PROPPANTS - The present invention relates to a process for the production of coated proppants as well as proppants obtainable by such a process, uses thereof and processes using the proppants. The process for the production of coated proppant comprises the following steps:
| 11-27-2014 |
20110073270 | COATING COMPOSITIONS FOR CASTING MOULDS AND CORES FOR AVOIDING MACULATE SURFACES - The invention relates to a size composition (coating composition) for casting moulds and cores, comprising at least one metal additive which contains a metal or a compound of a metal, wherein the metal is selected from one of groups 7 or 9 to 12 of the Periodic Table of the Elements. The invention also relates to a process for producing a casting mould, which comprises a mould coating of the size (coating) according to the invention, and to the use of said mould for the casting of metals. | 03-31-2011 |
20110073269 | CATALYSTS COMPRISING METHANE SULFONIC ACID FOR THE ACID HARDENING METHOD - The invention relates to a method for producing cores and molds for the foundry industry, wherein—a flowable fire-resistant primary molding material is provided. An acid is applied to the flowable fire resistant primary molding material, thus obtaining an acid-coated fire-resistant primary molding material. A binder that can be cured by acid is applied to the acid-coated fire resistant primary molding material, thus obtaining a fire-resistant primary molding material coated with a binder. The fire-resistant primary molding material coated with a binder is molded into a molded body, and-the molded body is cured, wherein the acid is a mixture of methane sulfonic acid and at least one further sulfur-free acid. The invention further relates to a mold material mixture as it is used in said method. With the method or the mold material mixture, casting molds can be produced having reduced emission of harmful compounds during casting. | 03-31-2011 |
20110073267 | COATING COMPOSITION WHICH ADSORBS ADOUROUS AND HARMFUL SUBSTANCES AND IS INTENDED FOR THE BOX CASTING OF METALS - The invention relates to a casting mould for the casting of metals, wherein a layer consisting of a material which absorbs harmful substances on at least sections of gas outlet surfaces of the casting mould, in particular the top side thereof. The invention also relates to a coating composition, to a process for producing the casting mould and to the use thereof for casting of metals. | 03-31-2011 |
20110005702 | USE OF BRANCHED ALKANE DIOL CARBOXYLIC ACID DIESTERS IN POLYURETHANE-BASED FOUNDRY BINDERS - The invention relates to a molding material mixture for production of molded products for the foundry industry, comprising at least one fire-resistant base molding material and a polyurethane-based binder system comprising a polyisocyanate component and a polyol component. According to the invention, the polyurethane-based binder system comprises a portion of a carboxylic acid diester of a branched alkane diol, said portion being at least 3 weight-%, and a portion of aromatic solvent of less than 10 weight-% of the binder system. A preferable carboxylic acid diester is 2,2,4-trimethyl-1,3-pentandiol-diisobutyrate. The molded products produced from the molding material mixture for the foundry industry are characterized by a high strength and a lower generation of fumes and smoke during pouring | 01-13-2011 |
20100326620 | MOULD MATERIAL MIXTURE HAVING IMPROVED FLOWABILITY - The invention relates to a mould material mixture for producing casting moulds for metal processing, a process for producing casting moulds, casting moulds which can be obtained by the process and their use. The production of the casting moulds is carried out using a refractory base moulding material and a binder based on water glass. A proportion of a particulate metal oxide selected from the group consisting of silicon dioxide, aluminium oxide, titanium oxide and zinc oxide is added to the binder, with particular preference being given to using synthetic amorphous silicon dioxide. The mould material mixture contains a surface-active material as further significant constituent. The addition of the surface-active material enables the flowability of the mould material mixture to be improved, which makes it possible to produce casting moulds having a very complicated geometry. | 12-30-2010 |
20100294454 | MOULDING MATERIAL MIXTURE CONTAINING PHOSPHORUS FOR PRODUCING CASTING MOULDS FOR MACHINING METAL - The invention relates to a molding mixture for producing casting molds for metalworking, a process for producing casting molds, casting molds obtained by the process and also their use. To produce the casting molds, a refractory mold raw material and a binder based on water glass are used. A proportion of a particulate metal oxide selected from the group consisting of silicon dioxide, aluminum oxide, titanium oxide and zinc oxide is added to the binder, particular preference being given to using synthetic amorphous silicon dioxide. The molding mixture contains a phosphate as essential constituent. The use of phosphate can improve the mechanical strength of casting molds at high thermal load. | 11-25-2010 |
20100224756 | MOULDING MATERIAL MIXTURE CONTAINING CARBOHYDRATES - The invention relates to a molding material mixture for production of casting molds for metalworking, to a process for producing casting molds, to casting molds obtained by the process and to the use thereof. For the production of casting molds, a refractory molding matrix and a waterglass-based binder are used. The binder has been admixed with a proportion of a particulate metal oxide which is selected from the group of silicon dioxide, aluminum oxide, titanium oxide and zinc oxide, particular preference being given to using synthetic amorphous silicon dioxide. The molding material mixture comprises a carbohydrate as a further essential constituent. The addition of carbohydrates allows the mechanical strength of casting molds and the surface quality of the casting to be improved. | 09-09-2010 |
20100224755 | COATING COMPOUNDS FOR CASTING MOULDS AND CORES THAT PREVENT REACTION GAS DEFECTS - The present invention relates to a coating and a method for producing a casting mold. The method provides for castings whereby gas defects are largely or completely suppressed. | 09-09-2010 |
20100036056 | RADICAL COLD CURING OF SYNTHETIC RESINS BASED ON MODIFIED POLY(METH) ACRYLATES COMPRISING REACTIVE ETHYLENIC GROUPS - The present invention relates to the radical cold curing of synthetic resins based on poly(meth)acrylate-urethane(meth)acrylates in urethane(meth)acrylates and optionally (meth)acrylates and/or reactive diluents using suitable additives, and also the use of these radically cold-curable synthetic resins as binding agents in radically cold-curable mixtures, as well as the organic synthetic glasses/plastics, synthetic glass/plastic workpieces and composite materials and workpieces obtained from these mixtures by radical cold curing, and also the production and use of these same mixtures, organic synthetic glasses/plastics, synthetic glass/plastic workpieces and composite materials and workpieces. | 02-11-2010 |
20090218066 | WATER-BASED WASH CONTAINING A NUCLEATING AGENT - The invention relates to a wash which is suitable, in particular, for centrifugal casting. The wash comprises at least:
| 09-03-2009 |
20090095439 | BOROSILICATE GLASS-CONTAINING MOLDING MATERIAL MIXTURES - The invention relates to a molding composition for producing casting molds for the foundry industry, comprising at least:
| 04-16-2009 |
20090014145 | Highly Insulating and Fireproof Coating Materials for Casting Moulds - The present invention relates to wash compositions which comprise a solvent component and a solids component wherein the solvent component comprises as main component water or one or more alcohols, and the solids component comprises as main component a mixture of metakaolinite and pyrophyllite, which can be applied onto casting moulds, casting moulds comprising these wash compositions and the use thereof, in particular in centrifugal casting processes and large-scale casting processes. | 01-15-2009 |
20080287602 | Aqueous Alkyd Resin Emulsion for Fixing Water-Soluble Dyes - The invention provides aqueous resin emulsion containing a resin obtained by reaction of a composition containing at least:
| 11-20-2008 |