Patent application number | Description | Published |
20110218357 | PROCESSES FOR PREPARING 4-CHLOROBENZENESULFONIC ACID AND 4,4'-DICHLORODIPHENYL SULFONE - The invention relates to a process for preparing 4-chlorobenzenesulfonic acid from 2-chlorobenzenesulfonic acid and/or 3-chlorobenzenesulfonic acid, comprising the conversion of 2-chlorobenzenesulfonic acid and/or 3-chlorobenzenesulfonic acid to 4-chlorobenzenesulfonic acid in the presence of sulfuric acid at a temperature of 100 to 300° C. | 09-08-2011 |
20110247606 | FLUID SULFUR WITH IMPROVED VISCOSITY AS A HEAT CARRIER - Mixture comprising elemental sulfur and an additive comprising anions. | 10-13-2011 |
20110263902 | PROCESS FOR PREPARING 4,4'-DICHLORODIPHENYL SULFONE - The invention relates to a process for preparing 4,4′-dichlorodiphenyl sulfone, comprising the reaction of monochlorobenzene and liquid sulfur trioxide, wherein the liquid sulfur trioxide used has a boron content of at most 100 ppm based on the total weight of the sulfur trioxide used, including all secondary components. | 10-27-2011 |
20110263903 | PROCESS FOR PREPARING 4,4'-DICHLORODIPHENYL SULFONE - The invention relates to a process for preparing 4,4′-dichlorodiphenyl sulfone proceeding from monochlorobenzene, wherein the content in the monochlorobenzene used of hydrocarbons having from 5 to 8 carbon atoms is at most 100 ppm; based on the total weight of the monochlorobenzene used, including the secondary components. | 10-27-2011 |
20120277354 | FLAME-RETARDANT MOLDING COMPOSITIONS - Thermoplastic molding compositions, comprising
| 11-01-2012 |
20120292303 | PIPELINE FOR CARRYING A MOLTEN SALT - The invention relates to a pipeline for carrying a molten salt, with a pipe wall that is stable with respect to the temperatures occurring. A heating conductor ( | 11-22-2012 |
20130056081 | PIPELINE SYSTEM AND METHOD FOR DRAINING A PIPELINE SYSTEM - The invention relates to a pipeline system for conveying a salt melt, comprising at least one pipeline ( | 03-07-2013 |
20130217912 | PROCESS FOR PREPARING MERCAPTOALKYL CARBOXYLATES - In the acid-catalyzed esterification of mercaptoalkyl alcohols by means of carboxylic acids to form mercaptoalkly carboxylates, formation of undesirable, usually sparingly soluble by-products usually occurs. The process of the invention in the absence of acid catalysts avoids the formation of such by-products. Particularly when the esterification of the invention is carried out as reactive distillation using reactive column and residence vessel, good degrees of conversion can also be obtained without acid catalyst and at the same time the formation of the by-products can be largely avoided. | 08-22-2013 |
20130264514 | NITRATE SALT COMPOSITIONS COMPRISING ALKALI METAL CARBONATE AND THEIR USE AS HEAT TRANSFER MEDIUM OR HEAT STORAGE MEDIUM - Nitrate salt composition comprising as significant constituents | 10-10-2013 |
20140047837 | METHOD OF IMPROVING NITRITE SALT COMPOSITIONS FOR USE AS HEAT TRANSFER MEDIUM OR HEAT STORAGE MEDIUM - Method of maintaining or widening the long-term operating temperature range of a heat transfer medium and/or heat storage medium comprising a nitrite salt composition comprising, as significant constituents, an alkali metal nitrate or an alkaline earth metal nitrate or a mixture of alkali metal nitrate and alkaline earth metal nitrate and in each case an alkali metal nitrite and/or alkaline earth metal nitrite, wherein all or part of the nitrite salt composition is brought into contact with an additive composed of nitrogen and/or noble gases, in each case with elemental oxygen, the latter in an amount in the range from 0 to 20% by volume based on the total amount of the additive in combination with nitrogen oxides and/or compounds which generate nitrogen oxide. | 02-20-2014 |
20140049052 | METHOD OF IMPROVING NITRATE SALT COMPOSITIONS FOR USE AS HEAT TRANSFER MEDIUM OR HEAT STORAGE MEDIUM - Method of maintaining or widening the long-term operating temperature range of a heat transfer medium and/or heat storage medium comprising a nitrate salt composition selected from the group consisting of alkali metal nitrate and alkaline earth metal nitrate and optionally alkali metal nitrite and alkaline earth metal nitrite, wherein all or part of the nitrate salt composition is brought into contact with an additive composed of a combination of elemental oxygen and nitrogen oxides. | 02-20-2014 |
20140202153 | METHOD OF IMPROVING NITRATE SALT COMPOSITIONS BY MEANS OF NITRIC ACID FOR USE AS HEAT TRANSFER MEDIUM OR HEAT STORAGE MEDIUM - Method of maintaining or widening the long-term operating temperature range of a heat transfer medium and/or heat storage medium comprising a nitrate salt composition selected from the group consisting of alkali metal nitrate and alkaline earth metal nitrate and optionally alkali metal nitrite and alkaline earth metal nitrite, wherein the nitrate salt composition is brought into contact with an additive comprising the components nitric acid and/or nitrous acid and oxygen-comprising gas having an oxygen partial pressure which is equal to or greater than that in air and/or oxygen-generating compounds and optionally nitrogen oxides and/or compounds which generate further nitrogen oxide. | 07-24-2014 |
20140238523 | APPARATUS FOR HEATING A PIPELINE - The invention relates to an apparatus for heating a pipeline system, comprising at least two pipelines ( | 08-28-2014 |