Patent application number | Description | Published |
20110262338 | METHOD AND SYSTEM FOR THE PRODUCTION OF PURE SILICON - A process for producing high-purity silicon includes (1) preparing trichlorosilane by reacting silicon with hydrogen chloride in at least one hydrochlorination process; (2) preparing monosilane by disproportionation of the trichlorosilane to provide a monosilane-containing reaction mixture containing silicon tetrachloride as a by-product; (3) in parallel to (1), reacting silicon tetrachloride obtained as the by-product in (2) with silicon and hydrogen in at least one converting process to produce a trichlorosilane-containing reaction mixture; and (4) thermally decomposing the monosilane into silicon and hydrogen. | 10-27-2011 |
20120003141 | PROCESS AND APPARATUSES FOR PREPARING ULTRAPURE SILICON - A process for preparing high-purity silicon by thermal decomposition of a silicon compound includes decomposing the silicon compound by mixing with a carrier gas at a temperature at which the silicon compound is thermally decomposed. | 01-05-2012 |
20120183465 | PLANT AND PROCESS FOR PREPARING MONOSILANE - A plant and a process prepare monosilane (SiH | 07-19-2012 |
20120189526 | PROCESS AND PLANT FOR PREPARING TRICHLOROSILANE - A process for preparing trichlorosilane includes reacting silicon particles with tetrachlorosilane and hydrogen and optionally with hydrogen chloride in a fluidized-bed reactor to form a trichlorosilane-containing product gas stream, where the trichlorosilane-containing product gas stream is discharged from the reactor via an outlet preceded by at least one particle separator which selectively allows only silicon particles up to a particular maximum size to pass through and silicon particles are discharged from the reactor at preferably regular intervals or continuously via at least one further outlet without such a particle separator. | 07-26-2012 |
20120201728 | METHOD AND SYSTEM FOR PRODUCING MONOSILANE - A plant for preparing monosilane (SiH | 08-09-2012 |
20130064751 | METHOD FOR PRODUCING HIGH PURITY SILICON - A process of producing high-purity silicon includes providing silicon-containing powder, feeding the silicon-containing powder into a gas stream, where the gas has a temperature sufficiently high to convert particles of metallic silicon from a solid state into a liquid and/or gaseous state, collecting and, optionally, condensing the liquid and/or gaseous silicon formed, and cooling the collected liquid and/or condensed silicon in a casting mold, | 03-14-2013 |
20130206056 | METHODS OF PRODUCING CRYSTALLINE SEMICONDUCTOR MATERIALS - A method of producing a crystalline semiconductor material includes feeding particles of the semiconductor material and/or a precursor compound of the semiconductor material into a gas flow, wherein the gas flow has a sufficiently high temperature to convert the particles of the semiconductor material from a solid into a liquid and/or gaseous state and/or to thermally decompose the precursor compound, condensing out and/or separating the liquid semiconductor material from the gas flow, and converting the liquid semiconductor material to a solid state with formation of mono- or polycrystalline crystal properties. | 08-15-2013 |
Patent application number | Description | Published |
20110269980 | OLIGOMERIZED ESTER ALKOXYLATE COMPOSITIONS - A process results in oligomerized ester alkoxylate compositions having substantially no unsaturation, which may be useful as lubricants, heat transfer fluids, plasticizers, thickening agents, surfactants, or power transmission fluids. The steps include, in either order, oligomerization of a hydroxylated fatty acid or fatty ester and quantitative reaction of unreacted carboxylic acid or ester groups with an alcohol, with the product of either reaction then being alkoxylated in the presence of a double metal cyanide catalyst. These oligomerized ester alkoxylates may be derived from vegetable oils to ensure high levels of renewable carbons. The compositions may exhibit desirably high viscosity index, low pour point, and high levels of renewable carbons. | 11-03-2011 |
20120041219 | DOUBLE ESTERS AND LUBRICANTS THEREOF - A new compound that comprises a branched ester based primarily on renewable resources preferably has good friction properties, a low pour point; acceptable viscosity, and good thermal oxidative stability and is useful as a functional fluid such as a lubricant. The branched ester is a double ester of a polyhydric alcohol having at least two active hydrogen groups separated by at least one carbon atom, wherein each hydroxyl group of the polyhydric alcohol is esterified with one monobasic secondary hydroxy fatty acid group and each hydroxyl of a fatty acid is esterified with one alkyl or cycloalkyl monobasic carboxylic acid group that has from 2 to 22 carbon atoms. | 02-16-2012 |
20120136168 | ESTERS OF SECONDARY HYDROXY FATTY ACID OLIGOMERS AND PREPARATION THEREOF - Prepare an ester of a secondary hydroxy fatty acid oligomer by first partially homopolymerizing a hydroxylated fatty acid compound, reacting the partially homopolymerized hydroxylated fatty acid compound with an alcohol to form an intermediate product, and capping the intermediate product with an acid, acid anhydride or ester. The ester of a secondary hydroxy fatty acid oligomer may be represented as follows: (3) where R is an alkyl group that contains from six to twelve carbon atoms, R | 05-31-2012 |
20140011723 | LUBRICANT COMPOSITION - Provided is a lubricant composition derived from renewable materials and that is useable in cold weather conditions and exhibits oxidative stability. The lubricant composition comprises a polymer of Formula (I), wherein R and p are as described in this specification. | 01-09-2014 |
20140100150 | ESTOLIDE DERIVATIVES USEFUL AS BIOLUBRICANTS - A composition comprising a mixture of esters prepared by a three-step process comprising the steps of a oligomerization, a transesterification, and a capping. The composition is useful in a variety of applications, including as a biolubricant having a high level of renewable carbons, and may exhibit particularly desirable properties relating to pour point, thermo-oxidative stability, and viscometric behavior due to reduced or eliminated levels of unsaturation in the final double esters. | 04-10-2014 |