Patent application number | Description | Published |
20080200576 | Polymeric Nanocomposite Materials Obtained by Controlled Nucleation Of Dendritic Polymers - The invention provides a process for producing a polymer mixture, which process is characterized in that nanoscale agglomerates of dendritic polymers having a molar mass of between 400 and 100 000 g/mol are formed by lowering the temperature to below the upper critical solution temperature or raising the temperature to above the lower critical solution temperature of the system in a polymer matrix, and the system is converted into the solid aggregate state by polymerization, temperature change, UV curing, pressure lowering, heat treatment or evaporation of volatile components of the system. | 08-21-2008 |
20090270582 | HYPER-BRANCHED POLYURETHANES METHOD FOR PRODUCTION AND USE THEREOF - A hyperbranched polyurethane which is obtainable by reacting a diisocyante or polyisocyanate with a triol of the formula (1) | 10-29-2009 |
20100261237 | FERMENTATIVE PRODUCTION OF ACETONE FROM RENEWABLE RESOURCES BY MEANS OF NOVEL METABOLIC PATHWAY - The invention describes a process for preparing acetone starting from acetyl-coenzyme A comprising process steps A. enzymatic conversion of acetyl-CoA into acetoacetyl-CoA B. enzymatic conversion of acetoacetyl-CoA into acetoacetate and CoA and C. decarboxylation of acetoacetate to acetone and CO | 10-14-2010 |
20110088777 | USE OF SILANE-MODIFIED POLYOLEFINS AS ADHESION PROMOTERS FOR THE PRODUCTION OF FLAT LAMINATES - The invention relates to the use of polyolefins modified with one or more silanes as adhesion promoters for the production of flat glass/glass, glass/plastic, or plastic/plastic laminates, to corresponding laminates, and to displays containing the laminates according to the invention. | 04-21-2011 |
20120003890 | PREPEGS AND MOLDED BODIES PRODUCED THEREOF AT LOW TEMPERATURE - The invention relates to prepregs and composite components (moulding) produced therefrom at a low temperature, obtainable by using powdery highly reactive polyurethane compositions containing uretdione groups, with specific catalysts. | 01-05-2012 |
20120003891 | PREPREGS AND MOLDED BODIES PRODUCED FROM SAME - The invention relates to prepregs and composite components produced therefrom (mouldings), obtainable by the use of powdery reactive polyurethane compositions. | 01-05-2012 |
20120202966 | METHOD FOR PRODUCING POLYESTERS AND CO-POLYESTERS FROM LACTONES - The invention relates to a method for producing polyesters and co-polyesters from lactones | 08-09-2012 |
20120226006 | NOVEL INITIATION METHOD FOR POLYMERIZING (METH)ACRYLATES - The invention relates to a novel polymerization method for (meth)acrylates, wherein the polymerization is initiated by isocyanates and special bases having an imine structure. By means of said novel method that can be deliberately employed, even high-molecular-weight poly(meth)acrylates having in part a narrow molecular weight distribution can be produced. Furthermore, a wide variety of polymer architectures, such as block, star or comb polymers, are available using said novel polymerization method. | 09-06-2012 |
20120289657 | FUNCTIONAL MATERIALS WITH CONTROLLABLE VISCOSITY - The present invention relates to an innovative method for controlling the viscosity of, for example, adhesives or coating formulations. The method for controlling viscosity allows very rapid thermoplastic curing of a formulation even at room temperature and a significant reduction in the viscosity at higher temperatures, thereby regaining the capacity for simple processing and allowing, for example, the originally bonded substrates to be separated from one another again with ease. A particular aspect in this context is that a plurality of cycles of thermoplastic curing and a significant reduction in the viscosity are possible with the present system. | 11-15-2012 |
20120309895 | FUNCTIONAL MATERIALS WITH REVERSIBLE CROSSLINKING - The present invention relates to an innovative method for the reversible crosslinking of, for example, adhesives or coating materials. The reversible crosslinking method allows very rapid crosslinking even at room temperature and undoing of the crosslinks at higher temperatures, thereby regaining the capacity for thermoplastic processing and allowing the originally bonded substrates to be separated from one another again with ease. A particular aspect in this context is that a plurality of cycles of crosslinking and undoing of the crosslinks are possible with the present system. | 12-06-2012 |
20130045652 | METHOD FOR PRODUCING STORAGE-STABLE POLYURETHANE PREPREGS AND MOLDINGS PRODUCED THEREFROM - The invention relates to a method for producing storage-stable polyurethane prepregs and moldings produced therefrom and moldings produced therefrom (composite components), which can be obtained by a direct melt impregnation method of woven fabrics and laid scrim using reactive polyurethane compositions. | 02-21-2013 |
20130078417 | SEMIFINISHED PRODUCT FOR THE PRODUCTION OF FIBRE COMPOSITE COMPONENTS BASED ON STABLE POLYURETHANE COMPOSITIONS - The invention relates to a semifinished product for the production of fibre composite components, comprising at least two walls of fibre-filled matrix material, which are angled in a meandering manner and are thermally joined to one another to form a symmetrical core structure. The invention addresses the problem of providing a semifinished product which is suitable as a core structure for a fibre composite component in sheet form that has better draping qualities as a result of the not yet cured matrix, but at the same time is sufficiently stable in terms of its shape and composition that it can be easily handled. This problem is solved by using as the matrix material a polyurethane composition which contains as a binder a polymer having functional groups that are reactive with respect isocyanates and contains as a hardener diisocyanate or polyisocyanate that is blocked internally and/or by blocking agents. | 03-28-2013 |
20130172480 | FUNCTIONAL MATERIALS HAVING A CONTROLLABLE VISCOSITY OR REVERSIBLE CROSSLINKING VIA AZA DIELS-ALDER REACTIONS WITH BISHYDRAZONES OR CONJUGATED BIS-SCHIFF BASES - The present invention relates to innovative materials which are reversibly crosslinkable by means of a thermoreversible mechanism and/or whose viscosity is reversibly adjustable. Through the use of bishydrazones or conjugated bis-Schiff bases as diene components in aza-Diels-Alder reactions, functional materials are generated that feature controllable viscosity and/or reversible crosslinking. | 07-04-2013 |
20130230716 | PREPREGS BASED ON STORAGE-STABLE REACTIVE OR HIGHLY REACTIVE POLYURETHANE COMPOSITION WITH FIXED FILM AND THE COMPOSITE COMPONENT PRODUCED THEREFROM - The invention relates to prepregs based on storage-stable reactive or highly reactive polyurethane composition with fixed film and the composite component produced therefrom. | 09-05-2013 |
20130231017 | PREPREGS BASED ON A STORAGE-STABLE REACTIVE OR HIGHLY REACTIVE POLYURETHANE COMPOSITION - The invention relates to prepregs based on a storage-stable reactive or highly reactive polyurethane composition for producing composite components having visible carbon fibre fabrics or scrims. | 09-05-2013 |
20130231022 | PREPREGS BASED ON A STORAGE-STABLE REACTIVE OR HIGHLY REACTIVE POLYURETHANE COMPOSITION - The invention relates to prepregs coloured with pigment or dye preparations and based on a storage-stable reactive or highly reactive polyurethane composition. | 09-05-2013 |
20130303042 | PROCESS FOR THE PRODUCTION OF STORAGE-STABLE POLYURETHANE PREPREGS AND MOULDINGS PRODUCED THEREFROM FROM DISSOLVED POLYURETHANE COMPOSITION - The invention relates to a method for producing storage-stable polyurethane prepregs and molding bodies produced therefrom (composite components), which can be obtained by a method using a polyurethane composition in solution and by impregnation of fibre-reinforced materials such as of woven fabrics and laid scrim using reactive polyurethane compositions. | 11-14-2013 |
20130303678 | MATERIALS HAVING A CONTROLLABLE DEGREE OF CROSSLINKING - The present invention relates to innovative materials which can be crosslinked by means of two different crosslinking mechanisms, the first crosslinking mechanism being an irreversible crosslinking. The second crosslinking mechanism is a thermoreversible mechanism. | 11-14-2013 |
20130317188 | CONTROLLED, IMINE BASE-INITIATED POLYMERIZATION - The present invention relates to an innovative polymerization technique for (meth)acrylates or styrenes, in which a special base with imine structure is added as a latent initiator, and the polymerization can be initiated without adding a coinitiator, at high temperatures. With this new and selectively employable technique it is also possible to produce high molecular weight poly(meth)acrylates having in some cases narrow molecular weight distribution. Furthermore, employing this new polymerization technique, a wide variety of different polymer architectures is available, such as block, star, or comb polymers. | 11-28-2013 |
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 |
20130345380 | NOVEL INITIATION PROCESS FOR POLYMERIZATION WITH ACTIVATION USING IONIC LIQUIDS - The present invention relates to an innovative polymerization technique for (meth)acrylates and styrenes, in which the polymerization is initiated by isocyanates and special bases with imine structure and is activated/accelerated by addition of ionic liquids. With this new technique, which can be employed selectively, it is also possible to produce high molecular weight poly(meth)acrylates with in some cases narrow molecular weight distribution. | 12-26-2013 |
20140065911 | PREPREGS AND MOLDINGS PRODUCED THEREFROM - The invention relates to prepregs and composite components produced therefrom (mouldings), obtainable by the use of powdery reactive polyurethane compositions. | 03-06-2014 |
20140087613 | STORAGE-STABLE POLYURETHANE PREPREGS AND MOULDINGS PRODUCED THEREFROM COMPOSED OF A POLYURETHANE COMPOSITION WITH LIQUID RESIN COMPONENTS - The invention relates to storage-stable polyurethane prepregs and mouldings produced therefrom composed of polyurethane compositions with liquid resin components, preferably liquid polyols. | 03-27-2014 |
20140121327 | POLYMER POWDER FOR PRODUCING THREE-DIMENSIONAL OBJECTS - The invention relates to the use of a powder made of a polymer, which of two or more components with functionalities suitable for Diels-Alder reactions, or of a powder mixture (dry blend) made of powders respectively of at least one of the reactive components, where these together enter into the Diels-Alder reaction with one another and are capable of a retro-Diels-Alder reaction, in a rapid-prototyping process. | 05-01-2014 |
20140163165 | LOW MOLECULAR WEIGHT PRODUCTS AND USE THEREOF AS REVERSIBLE OR PERMANENT LOW-TEMPERATURE CROSSLINKING AGENT IN DIELS-ALDER REACTIONS - The invention relates to low molecular mass products and to the use thereof as reversible or permanent low-temperature crosslinkers in Diels-Alder reactions. | 06-12-2014 |
20140249242 | GRAFTING OR CROSSLINKING OF UNSATURATED POLYOLEFINS BY BASE/ISOCYANATE INITIATION - The present invention relates to a novel type of grafting or crosslinking method for (meth)acrylates in which the reaction is initiated by isocyanates and specific bases having an imine structure. Using this novel and specifically applicable method, polymers, particularly polyolefins having double bonds, may be grafted or crosslinked in a suitable reaction procedure. | 09-04-2014 |
20140323001 | PSEUDOTHERMOPLASTIC, SELF-CROSSLINKING COMPOSITES - In the present process, reversibly crosslinking composites or storage-stable prepregs are produced by means of a hetero Diels-Alder reactions (HDA,) for example of PMMA polymers. At slightly elevated temperature, these prepregs can be reversibly decrosslinked again by a retro hetero Diels-Alder reaction so that they become moldable. The back-reaction to products which are again crosslinked or high molecular weight then takes place at room temperature. | 10-30-2014 |
20140323648 | PHOTO-INDUCED CROSSLINKING OF DOUBLE BOND-CONTAINING POLYMERS BY MEANS OF A PERICYCLIC REACTION - The present invention relates to a novel method for photoinduced crosslinking of, for example, adhesives or coating compositions. | 10-30-2014 |