Patent application number | Description | Published |
20100036154 | PROCESS FOR THE CONTINUOUS PREPARATION OF (CYCLO)ALIPHATIC DIISOCYANATES - The invention relates to a multi-stage process for the continuous, phosgene-free preparation of (cyclo)aliphatic diisocyanates that comprises the conversion of (cyclo)aliphatic diamines into the corresponding (cyclo)alkylene biscarbamates and the thermal cleaving of the latter into the (cyclo)alkylene diisocyanates and alcohol. The urea used in accordance with the invention and also the urea employed for the preparation of urea equivalents (e.g. alkyl carbonates, alkyl carbamates) as a possible precursor for the synthesis of the (cyclo)aliphatic biscarbamates is unconditioned. | 02-11-2010 |
20100168329 | ALIPHATIC, CYCLOALIPHATIC OR (CYCLO)ALIPHATIC DIISOCYANATES THAT ARE STABLE IN STORAGE - The invention relates to aliphatic, cycloaliphatic or (cyclo)aliphatic diisocyanates, in addition to a method for their production. | 07-01-2010 |
20110028755 | LOW CHLORINE, MULTI-STAGED METHOD FOR PRODUCING CYCLOALIPHATIC DISOCYANATES - Low chlorine, multi-staged method for producing cycloaliphatic diisocyanates. The invention relates to a multi-staged method for the continuous low-chlorine production of cycloaliphatic diisocyanates, comprising the synthesis of diaminodipheynl alkanes, the hydration thereof into the corresponding cycloaliphatic diamines and the subsequent conversion of cycloaliphatic diamines to the corresponding cycloalkylene biscarbamates and the thermal cleaving of the latter into the cycloaliphatic diisocyanates and alcohol. | 02-03-2011 |
20110251424 | LOW MONOMER 1 : 1 MONOADDUCTS OF REACTIVE OLEFINIC COMPOUNDS AND DIISOCYANATES USING INSERTABLE INHIBITORS - The invention relates to low monomer 1:1 monoadducts of reactive olefinic compounds and diisocyanates, to the production and to the use thereof. | 10-13-2011 |
20110281054 | POLYOLEFIN GRAFT POLY(METH)ACRYLATE COPOLYMER-BASED PRIMING AGENT FOR POLYOLEFIN SURFACES - The invention relates to a novel halogen-free and acid-free, readily soluble priming bonding agent for polyolefins, said agent containing (meth)acrylate-grafted, amorphous polyolefins. | 11-17-2011 |
20110300322 | POLYOLEFIN GRAFT POLY(METH)ACRYLATE COPOLYMER-BASED ADHESION PROMOTER FOR COATING POLYOLEFIN SURFACES - The invention relates to a novel halogen-free and acid-free, readily soluble adhesion promoter for polyolefins, said promoter containing (meth)acrylate-grafted, amorphous polyolefins. | 12-08-2011 |
20110301345 | METHOD FOR PRODUCING 1:1 ADDUCTS HAVING A LOW MONOMER CONTENT FROM HYDROXYALKYL(METH)ACRYLATES AND DIISOCYANATES - The present invention relates to the production and the use of 1:1 adducts having a low monomer content from hydroxyalkyl(meth)acrylates and diisocyanates. | 12-08-2011 |
20130323993 | COMPOSITE SEMIFINISHED PRODUCTS, MOLDED PARTS PRODUCED THEREFROM, AND MOLDED PARTS PRODUCED DIRECTLY BASED ON HYDROXY-FUNCTIONALIZED (METH)ACRYLATES, WHICH ARE CROSS-LINKED BY MEANS OF URETDIONES IN A THERMOSETTING MANNER - The invention relates to a process for producing polyurethane prepregs which are stable during storage, and to mouldings (composite components) produced therefrom. The prepregs or components are produced by mixing (meth)acrylate monomers, (meth)acrylate polymers, hydroxy-functionalized (meth)acrylate monomers and/or hydroxy-functionalized (meth)acrylate polymers with uretdione materials and moreover with aromatic amines which accelerate a free-radical polymerization reaction. This mixture or solution is applied by known processes to fibre material, e.g. carbon fibres, glass fibres or polymer fibres, and is polymerized at room temperature or higher temperatures with the aid of initiators, e.g. dibenzoyl peroxide. Instead of amine acceleration and subsequent hardening with initiators, it is also possible to use other known room-temperature curing systems, e.g. permaleate systems. | 12-05-2013 |
20140079841 | MULTICOLOURED FUSED DEPOSITION MODELLING PRINT - The invention relates to a modified fused deposition modeling process for production of multicolored three-dimensional objects. More particularly, the invention relates to a 3D printing process with which 3D objects with particularly good color appearance compared to the prior art can be produced. The process according to the invention is based on coloring of the polymer strand used for production of the actual object in the nozzle, and on using a mixing apparatus which comprises a plurality of injection needles, a static mixer or a dynamic mixer. | 03-20-2014 |
20140088751 | MULTICOLOURED FUSED DEPOSITION MODELLING PRINT - The invention relates to a modified fused deposition modeling process for production of multicolored three-dimensional objects. More particularly, the invention relates to a 3D printing process with which 3D objects with particularly good color appearance compared to the prior art can be produced. The process according to the invention is based on surface coloring or additive coating of the polymer strand used for production of the actual object or of the melt which results therefrom in the nozzle. | 03-27-2014 |
20140134334 | MULTICOLOUR EXTRUSION-BASED 3D PRINT PROCESS - A 3D extrusion print process for producing multicolored three-dimensional objects is provided. The process produces mechanically stable, multicolored 3D objects with good color definition. The process according to the invention is based on coating, upstream of the printing head, of the polymer strand used for producing the actual object, and on fixing of the coating upstream of entry of the polymer strand into the printing head. Downstream of the extrusion process in the printing head, the coating remains predominantly at the surface of the extruded strand. | 05-15-2014 |
20150045585 | HYDROLYSIS OF THE RESIDUES OBTAINED IN THE PRODUCTION OF ISOPHORONE TO RECOVER ISOPHORONE AND ACETONE - A process for preparing isophorone (3,5,5-trimethyl-2-cyclohexen-1-one) is provided wherein distillation vapors from the work-up of product fractions are recycled to earlier stages of operation of the process. | 02-12-2015 |