Patent application number | Description | Published |
20080279904 | PH-REGULATED POLYAMIDE POWDER FOR COSMETIC APPLICATIONS - The present invention relates to polyamide powders suitable for cosmetic applications are described which have a pH of 4.0 to 7.0, cosmetic compositions containing the polyamide powders and processes of making the same. | 11-13-2008 |
20090088508 | POWDERY COMPOSITION OF A POLYMER AND A FLAMEPROOFING AGENT CONTAINING AMMONIUM POLYPHOSPHATE, METHOD FOR THE PRODUCTION THEREOF, AND MOULDED BODY PRODUCED FROM SAID POWDER - The present invention relates to a powder which, in addition to a polymer, comprises a flame retardant based on ammonium polyphosphate, to the use of this powder for the layer-by-layer production of moldings, and also to moldings produced from this powder. The moldings constructed using the inventive powder have marked advantages with regard to their flammability, when comparison is made with conventional products, and this permits use in aircraft, for example. | 04-02-2009 |
20090236775 | COPOLYAMIDE POWDER AND ITS PREPARATION, USE OF COPOLYAMIDE POWDER IN A SHAPING PROCESS AND MOULDINGS PRODUCED FROM THIS COPOLYAMIDE POWDER - A task often encountered in very recent times is the rapid provision of prototypes. Particularly suitable processes are those based on pulverulent materials and in which the desired structures are produced layer-by-layer through selective melting and solidification. The invention provides the constitution, production and use of a copolyamide powder which was produced using the following monomer units: a) laurolactam or ω-aminoundecanoic acid, and also b) dodecanedioic acid, and either c) decanediamine or dodecanediamine, in shaping processes, and also to mouldings produced through a layer-by-layer process which selectively melts regions of a powder layer, using this specific powder. Once the regions previously melted layer-by-layer have been cooled and solidified, the moulding can be removed from the powder bed. The mouldless layer-by-layer processes for the production of components using the copolyamide powder result in simplified and more reliable conduct of the process and better recyclability. | 09-24-2009 |
20100071557 | GAS SEPARATION MEMBRANES - The present invention relates to compositions for producing membranes, the compositions comprising at least 0.1% by weight of highly branched polymer, at least 0.5% by weight of linear polymer and at least 30% by weight of solvent. The present invention additionally describes membranes obtainable from the compositions, and methods of producing these membranes. | 03-25-2010 |
20100300573 | USE OF A POLYAMIDE MOLDING COMPOUND FOR LINING CONDUITS - In a method for the introduction of an inliner into a pipe or a pipeline, where the external diameter of the inliner is greater than the internal diameter of the pipe or of the pipeline, and where the action of an external force is used to reduce the cross section of the inliner prior to the introduction, the inliner is composed of a polyamide moulding composition which comprises at least 50% by weight of polyamide which is not PA11. The recovery behaviour of said polyamides is similar to that of polyethylene usually used for this purpose. | 12-02-2010 |
20100324190 | POWDERY COMPOSITION OF A POLYMER AND A FLAMEPROOFING AGENT CONTAINING AMMONIUM POLYPHOSPHATE, METHOD FOR THE PRODUCTION THEREOF, AND MOULDED BODY PRODUCED FROM SAID POWDER - A pulverulent composition that is a powder containing at least one polymer, and at least one flame retardant that contains ammonium polyphosphate, the powder having a maximum particle size of ≦150 μm and a median particle size of from 20 to 100 μm. | 12-23-2010 |
20110045269 | COMPONENT WITH TOP LAYER OF A PA613 MOULDING COMPOUND - A component which comprises the following components: I. a top layer of a moulding compound which contains at least 50% by weight of PA613 and II. a substrate of a thermoplastic moulding compound has a surface with high scratch resistance and high chemical resistance. | 02-24-2011 |
20110130515 | POLYMER POWDER COMPRISING A COPOLYMER, USE IN A SHAPING METHOD WHICH USES A NON-FOCUSED APPLICATION OF ENERGY AND MOULDED BODY THAT IS PRODUCED FROM SAID POLYMER POWDER - A molding produced by a layer-by layer process of selectively melting regions of a respective pulverulent layer via unfocused introduction of electromagnetic energy, using a polymer powder, where the powder has at least one thermoplastic random copolymer with an ISO 1133 MFR value of from 12 to 1 g/10 min. | 06-02-2011 |
20110165358 | PROCESS FOR PRODUCING A MOLDING COMPOSITION OR A MOLDING WITH AN INCREASE IN THE MELT STIFFNESS - A polyamide moulding composition is condensed up in the melt by means of a masterbatch containing a compound having at least two carbonate units and also a polyetheramide in which at least 50% of the end groups are present as amino end groups, whereupon the melt mixture is discharged and solidified to give a moulding composition or a moulding. The product obtained has an increased amino end group content and consequently an improved hydrolysis resistance. | 07-07-2011 |
20110209768 | USE OF A COMPOSITION FOR CONTACT WITH SUPERCRITICAL MEDIA - A moulding composition which comprises at least 50% by weight of the following constituents: | 09-01-2011 |
20110217559 | JOINING OF MOULDINGS OF DIFFERENT POLYAMIDE COMPOUNDS - A moulding compound for joining two mouldings each made of a PA11 and/or PA12 moulding compound contains at least 50% by weight of a polyamide component so chosen that it is preparable from linear aliphatic diamines and dicarboxylic acids and/or lactams or ω-aminocarboxylic acids, there being 11 to 12 carbon atoms present per carboxamide group in the repeating units, and, furthermore, this polyamide component containing not more than 80% by weight of either one of the polyamides PA11 and PA12. With this compound a firm weld is obtained both to a PA11 moulding and to a PA12 moulding. | 09-08-2011 |
20110244209 | TRANSPARENT MOLDING COMPOSITION - A polyamide molding composition which can be used for production of a printable or printed item contains a) at most 90 parts by weight of a polyamide obtained from a lactam or from an amino carboxylic acid having at least 10 carbon atoms; and b) from 10 to 100 parts by weight of PA1010, wherein a total of components a) and b) is 100 parts by weight. | 10-06-2011 |
20120041132 | POLYMER POWDER COMPRISING POLYAMIDE USE THEREOF IN A MOULDING METHOD AND MOULDED BODY MADE FROM SAID POLYMER POWDER - A molding, produced by a layer-by-layer process in which regions of respective polymer pulverulent layers are selectively melted via introduction of electromagnetic energy, where the process employs a powder which comprises at least one homopolyamide prepared via polycondensation of diamines and dicarboxylic acids, wherein the homopolyamide has an enthalpy of fusion of at least 125 J/g and a recrystallization temperature of at least 148° C. | 02-16-2012 |
20120094116 | POLYAMIDE BLEND FILM - A film whose outer layer is composed of a molding composition which is in essence composed of the following components:
| 04-19-2012 |
20120095161 | MOLDING COMPOUND ON THE BASIS OF A COPOLYAMIDE CONTAINING TEREPHTHALIC ACID AND TRIMETHYLHEXAMETHYLENE DIAMINE UNITS - A molding compound, containing at least 30% by weight of a copolyamide, which is derived from the following monomers: a) 50 to 95 mole percent of the combination of a diamine, selected from the group consisting of 1,9-nonane diamine, 1,10-decane diamine, 1,11-undecane diamine and 1,12-dodecane diamine, and terephthalic acid, and b) 5 to 50 mole percent of the combination of a diamine, selected from the group consisting of 2,2,4-trimethylhexamethylene diamine, 2,4,4-trimethylhexamethylene diamine, and mixtures thereof, and terephthalic acid. The copolyamide is crystalline and has low water absorption. | 04-19-2012 |
20120203033 | PREPARATION OF PRIMARY DIAMINES HAVING A LINEAR MAIN CHAIN FOR POLYAMIDE SYNTHESES - The invention provides a method to produce primary diamines by catalytic conversion of diols having a linear main chain of from 4 to 31 carbon atoms into the corresponding diamines. The reaction is conducted in a liquid or supercritical phase and is catalyzed by a homogeneous ruthenium-containing complex. The primary diamines obtained may be suitable for polyamide syntheses. | 08-09-2012 |
20120264877 | PROCESS FOR PRODUCING ULTRAFINE POWDERS BASED ON POLYAMIDES, ULTRAFINE POLYAMIDE POWDERS AND THEIR USE - Process for preparing ultrafine powders based on polyamides by contacting polyamides having a relative solution viscosity η | 10-18-2012 |
20120315483 | POLYAMIDE-BASED POLYMER POWDER, USE THEREOF IN A MOLDING METHOD, AND MOLDED ARTICLES MADE FROM SAID POLYMER POWDER - The invention relates to a polymer powder for use in a layer-by-layer method in which areas of each powder layer are selectively fused by introducing electromagnetic energy. Said polymer powder contains: at least one AB-type polyamide produced by polymerizing lactams comprising 10 to 12 carbon atoms in the monomer unit or polycondensing the corresponding ω-amino carboxylic acids comprising 10 to 12 carbon atoms in the monomer unit and at least one AABB-type polyamide produced by polycondensing diamines and dicarboxylic acids, each of which comprises 10 to 14 carbon atoms in the monomer units, the AB-type polyamide containing up to 20 mole % of the AABB comonomer units and the AABB-type polyamide containing up to 20 mole % of the AB monomer units. The invention also relates to a method for producing such a powder, a layer-by-layer method for producing a molded article from such a powder in which areas of each layer are selectively fused by introducing electromagnetic energy, the selectivity being obtained using masks or by applying inhibitors, absorbers or susceptors or focusing the applied energy, and molded articles produced in said manner. | 12-13-2012 |
20130006005 | PROCESS FOR PREPARING LINEAR ALPHA,OMEGA-DICARBOXYLIC DIESTERS - The invention provides a process for preparing linear alpha,omega-dicarboxylic diesters by reacting a triglyceride containing fatty acid residues having monounsaturated or polyunsaturated carbon chains with carbon monoxide, an acid and an OH-group donor in one reaction step in the presence of a catalyst. | 01-03-2013 |
20130011660 | POWDER COMPRISING POLYMER-COATED CORE PARTICLES COMPRISING METALS, METAL OXIDES, METAL NITRIDES OR SEMIMETAL NITRIDES - Composite particles comprising core particles completely or partially coated with a precipitated polymer, where the d | 01-10-2013 |
20130012643 | POWDER COMPRISING POLYMER-COATED GLASS PARTICLES - Composite particles comprising core particles completely or partially coated with a precipitated polymer, where the d | 01-10-2013 |
20130171388 | PROCESS FOR PRODUCING A MOULDING FROM A POLYAMIDE MOULDING COMPOSITION WITH IMPROVED HYDROLYSIS RESISTANCE - A process for producing hydrolysis-resistant mouldings with geometries having large dimensions by cumulative condensation of a polyamide moulding composition, is provided. The process includes mixing a polyamide moulding composition of a polyamide having at least 50% of amino end groups with 0.1 to 5% by weight, based on the polyamide moulding composition, of an oligo- or polycarbodiimide. The mixture is subsequently processed to give the moulding, wherein cumulative condensation is obtained during the processing of the moulding. | 07-04-2013 |
20130171416 | POWDER COMPRISING POLYMER-COATED INORGANIC PARTICLES - Composite particles comprising core particles completely or partially coated with a precipitated polymer, where the d | 07-04-2013 |
20130183529 | POWDER COMPRISING POLYMER-COATED POLYMERIC CORE PARTICLES - The invention relates to powder, comprising composite particles comprising core particles completely or partially coated with a precipitated first polymer, where the core particles comprise a second polymer which differs from the precipitated first polymer, and where the ratio of the d | 07-18-2013 |
20130274435 | POLYMER POWDER WITH MODIFIED MELTING BEHAVIOUR - The present invention provides precipitated polymer powders based on a polyamide of the AABB type, obtained by the reprecipitation of the polyamides by at least partial dissolution followed by continuous cooling of the solution to below the precipitation temperature. The polyamides are prepared by polycondensation of diamines with dicarboxylic acids. The precipitated polyamides obtained are used in layer-by-layer shaping processes such as selective laser sintering. | 10-17-2013 |
20140037937 | POLYAMIDE BLEND FILM - A film whose outer layer is composed of a molding composition which is in essence composed of the following components:
| 02-06-2014 |
20140371364 | POLYMER POWDER WITH POLYAMIDE, USE IN A SHAPING PROCESS, AND MOLDINGS PRODUCED FROM THIS POLYMER POWDER - The present invention relates to a polymer powder which comprises nylon-11, and to the use of this powder for shaping processes, and also to moldings produced from this polymer powder. | 12-18-2014 |
20150086737 | MOULDING COMPOUND BASED ON A PARTIALLY AROMATIC COPOLYAMIDE - A moulding composition, comprising at least 40 wt. % of the following components:
| 03-26-2015 |
20150086738 | MOULDING COMPOUND BASED ON A PARTIALLY AROMATIC COPOLYAMIDE - A moulding composition, comprising at least 40 wt. % of the following components:
| 03-26-2015 |