| Patent application number | Description | Published |
|---|
| 20100036080 | PLASTICS MOULDINGS OF POLYURETHANE AND THEIR USE - The invention relates to compact plastics mouldings having bulk densities of >1000 kg/m | 02-11-2010 |
| 20110241248 | MULTI-LAYERED FIRE-RESISTANT PLASTIC MATERIAL - The present invention relates to a multi-layered plastic material, a process for the preparation thereof, and the use thereof. A multi-layered plastic material having a bending modulus of elasticity of >250 N/mm | 10-06-2011 |
| 20120301651 | POLYISOCYANURATE-COATED PARTS AND THE USE THEREOF IN OFFSHORE APPLICATIONS - The invention relates to parts coated with polyisocyanurates and to the use thereof. Such parts are preferably used in the ocean. | 11-29-2012 |
| 20130131384 | PROCESS FOR RESTORING CATALYST ACTIVITY - The present invention relates to a process for restoring the activity of spent catalysts for the hydrogenation of aromatic nitro compounds, in which a regeneration comprising at least a first burning off stage, a first washing stage, a second burning off stage and a second washing stage is carried out at periodic intervals. | 05-23-2013 |
| 20130204043 | METHOD FOR CONTINUOUSLY PRODUCING NITROBENZENE - The present invention relates to a continuous process for the production of nitrobenzene by nitration of benzene with nitric acid or mixtures of nitric acid and sulfuric acid to give a crude nitrobenzene, washing of the crude nitrobenzene by means of at least one of each of an acid, alkaline and neutral washing, there being obtained a pre-purified nitrobenzene which, as well as containing nitrobenzene, at least contains also low boilers, optionally middle boilers as well as high boilers and salts, wherein the pre-purified nitrobenzene is purified further by separating off low boilers in a distillation apparatus by evaporation of the low boilers, and separation of nitrobenzene from the resulting further purified nitrobenzene in a distillation apparatus by partial evaporation of nitrobenzene, wherein pure nitrobenzene is removed from the distillation apparatus in gaseous form and is subsequently condensed, and wherein the non-evaporated portion of the further purified nitrobenzene is fed back into the washing at any desired point. | 08-08-2013 |
| 20130296610 | CHEMICAL REACTOR HAVING WOVEN WIRE MESH PRODUCT AS A RETAINING DEVICE FOR PARTICLES - In a chemical reactor for heterogeneously catalysed reaction of a fluid, comprising a holding device for catalyst particles and/or inert particles ( | 11-07-2013 |
| 20140309457 | CATALYST AND METHOD FOR PRODUCING AROMATIC AMINES IN THE GAS PHASE - The present invention relates to a catalyst comprising a ceramic support with a BET surface area of less than 40 m | 10-16-2014 |
| 20150073180 | METHOD FOR CONTINUOUS PRODUCTION OF NITROBENZENE - The invention relates to a method for producing nitrobenzene, in which crude nitrobenzene is first produced by nitrating benzene and said crude nitrobenzene is then washed in succession in at least one acid wash, in at least one alkaline wash and in at least one neutral wash, at least one additional wash with an aqueous solution of a potassium salt being interposed between the last alkaline wash and the first neutral wash. | 03-12-2015 |
| 20150080610 | PROCESS FOR THE PURIFICATION OF ANILINE FROM GASE PHASE HYDROGENATIONS - The present invention relates to a process for the purification of aniline which originates from gas phase hydrogenations. In this process, only a minimum proportion of the aniline has to be evaporated and condensed again. The process is highly efficient in removing compounds which have phenolic hydroxyl groups and results in minimal losses of aniline. This process also reduces the unwanted coupling mechanisms in the division of the overall crude product in the fraction condensation into individual substreams and the subsequent workup of these. | 03-19-2015 |
| 20150080611 | METHOD FOR STARTING A REACTION DURING THE PRODUCTION OF AROMATIC AMINES FROM NITROAROMATICS - The present invention relates to a method of producing aromatic amines by hydrogenation of aromatic nitro compounds. This method comprises the steps:
| 03-19-2015 |
| 20150087862 | METHOD FOR STOPPING A REACTION DURING THE PRODUCTION OF AROMATIC AMINES FROM NITROAROMATICS - The present invention relates to A method for producing aromatic amines by the hydrogenation of aromatic nitro compounds. This method comprises:
| 03-26-2015 |
