Patent application number | Description | Published |
20080210343 | Process for treatment of metal surfaces - A process for treating the working surfaces of equipment used in the production and processing of polycarbonate is disclosed. The thermal treatment in an oxidative atmosphere results in resin and molded articles having improved optical quality. | 09-04-2008 |
20080319156 | Process For The Preparation Of Polycarbonate By The Melt Transesterification Process - The invention provides a process for the preparation of polycarbonate by the melt transesterification process, polycarbonate having a low electrostatic charge obtainable by this process, and mouldings or extrudates, in particular optical data storage media or light-diffusing plates, made from this polycarbonate. | 12-25-2008 |
20100086716 | METHOD FOR THE PRODUCTION OF MULTILAYER CONTAINERS - The present invention concerns a process for producing a container having at least one layer and a top layer, wherein the layer contains polycarbonate and the top layer contains polyarylethersulfone or polyarylsulfone, characterised in that a) polycarbonate is melted on an extruder at 230-320° C., b) polyarylethersulfone or polyarylsulfone is melted on a further extruder, c) the melts obtained from steps a) and b) are shaped by coextrusion into a tube, which is then enclosed in a mould, d) the extrudate is inflated inside the mould and pressed against the wall of the mould, forming the shape of the container, and e) the container obtained from d) is trimmed and cooled, such containers and the use of the containers as bottles or medical devices. | 04-08-2010 |
20110127468 | Polycarbonate for making extruded films that are virtually free of surface defects - Linear polycarbonate resin virtually free of surface defects that impair the suitability of the resin for demanding optical application is disclosed. Also disclosed is a process for the manufacture of the resin. The surface defects included in the resin are in the form of transparent fluorescing particles, the particle count of which portion that are 15 and 250 μm in size, is up to 1.8 counts/g, said count being determined by exciting the residue remaining after filtering a solution of said polycarbonate in methylene chloride through a Teflon filter of 5 μm pore size at a wavelength of 400-440 nm, 25× overall magnification and illumination time of 40 millisec. The polycarbonate is suitable for making films of improved optical properties. | 06-02-2011 |
20110143126 | POLYCARBONATE BLENDS HAVING HIGH HEAT DISTORTION RESISTANCE AND IMPROVED SURFACE PROPERTIES - The present invention relates to compositions containing copolycarbonates comprising bisphenol A and TMC bisphenol building blocks and specific polyolefins or functionalized polyolefins. The invention also relates to mouldings and injection moulded parts and extrudates obtainable from these compositions, and to processes for the production of the mouldings and extrudates. The invention furthermore relates to multilayer products comprising a substrate containing the polycarbonate according to the invention, which has a further layer at least on one side, preferably a metal layer, and processes for the production of such products. | 06-16-2011 |
20110144250 | POLYMER COMPOSITION WITH HEAT-ABSORBING PROPERTIES AND HIGH STABILITY - The present invention relates to a heat-absorbing polymer composition containing a transparent thermoplastic synthetic substance, an inorganic infrared absorber with stabiliser and also to the production and use of the polymer compositions according to the invention and to the products produced therefrom. In particular, the present invention relates to the stabilisation of inorganic IR absorbers from the group of the tungsten compounds and also to the use of the polymer composition according to the invention containing these stabilised inorganic IR absorbers for the purpose of producing windowpanes for use in buildings, motor vehicles, rail vehicles or aircraft. | 06-16-2011 |
20110272646 | POLYMER COMPOSITIONS WITH HEAT-ABSORBING PROPERTIES AND A HIGH STABILITY - The present invention relates to a composition comprising at least one transparent thermoplastic material; at least one inorganic IR absorber which comprises a zinc-doped caesium tungstate; and optionally at least one stabilizer which is based on phosphine. The present invention also relates to a composition which comprises a thermoplastic polymer material, an inorganic IR absorber, at least one phosphine stabilizer, at least one phosphite stabilizer, and at least one phenolic antioxidant stabilizer. | 11-10-2011 |
20110272647 | STABILIZER COMBINATIONS - The present invention relates to a stabilizer combination for stabilizing IR absorbers, comprising a) at least one stabilizer based on phosphine, b) at least one stabilizer based on phosphite, and c) at least one phenolic antioxidant stabilizer. | 11-10-2011 |
20110292502 | POLYMER COMPOSITION HAVING HEAT-ABSORBING PROPERTIES AND IMPROVED COLOUR PROPERTIES - The present invention relates to a polymer composition which absorbs infrared (IR) radiation, containing a transparent thermoplastic plastic, an inorganic infrared absorber and at least one inorganic nano-scale pigment, and to the preparation and use of the polymer compositions according to the invention, and to products produced therefrom. In particular, the present invention relates to polymer compositions comprising
| 12-01-2011 |
20110293921 | POLYMER COMPOSITION HAVING HEAT-ABSORBING PROPERTIES AND IMPROVED COLOUR PROPERTIES - An embodiment of the present invention relates to a composition comprising a) at least one transparent thermoplastic material; b) at least one inorganic IR absorber comprising at least one boride compound present in an amount of from 0.0015 wt. % to 0.015 wt. %, calculated as solids content of boride in the total polymer composition; and c) at least one inorganic, nano-scale pigment present in an amount of from 0.0008 wt. % to 0.0035 wt. %, based on the total composition; and d) optionally further additives. | 12-01-2011 |
20110300325 | DISC SHAPED HIGH DENSITY RECORDING MEDIUM - This invention relates to an optical recording medium in which at least a recording layer and a light transmitting layer are sequentially formed on a substrate and in which the light is illuminated from the light transmitting layer side for recording and/or reproducing information signals, said substrate comprising an injection molded part, and said substrate having a Young's modulus E of at least 2.15 GPa and a Q factor of lower than 160 measured at 25° C. at 2000 Hz in accordance to ASTM E 756-05 05 and a transcriptability of the pit/groove structure of >85%. | 12-08-2011 |
20120152150 | ORGANIC COLOURING AGENTS AND COLOURED POLYMER COMPOSITIONS WITH A HIGH STABILITY TO WEATHERING - The present invention relates to organic colouring agents with a high colour stability to weathering for thermoplastics. The invention furthermore relates to a polymer composition containing at least one thermoplastic and at least one organic colouring agent, preferably a combination of at least two organic colouring agents, of a specific structure. The invention moreover relates to the use of the colouring agents according to the invention for colouring polymer compositions, in particular for transparent formulations such as are required for the production of panes for use in buildings, motor vehicles and track vehicles or aircraft. | 06-21-2012 |
20120153241 | POLYMER COMPOSITION HAVING HEAT-ABSORBING PROPERTIES AND HIGH STABILITY TO WEATHERING - The invention relates to a polymer composition which absorbs infrared radiation (IR), containing a transparent thermoplastic plastic, an inorganic infrared absorber, also referred to as IR absorber hereinbelow, at least one inorganic nano-scale pigment, and the combination of at least two organic colouring agents of a specific structure, and to the preparation and use of the polymer compositions according to the invention and to products produced therefrom. | 06-21-2012 |
20120157586 | COLOUR-STABLE LED SUBSTRATES - The present invention relates to a composition comprising, (a) a transparent or translucent polymer or polymer blend in an amount which together with components b) to g) gives 100 wt. %, (b) optionally 0 ppm to 2500 ppm of one or more stabilisers, (c) 0.001 ppm to 10,000 ppm of at least one dye comprising structure 1a and/or 1b, | 06-21-2012 |
20120157587 | POLYMER COMPOSITION HAVING HEAT-ABSORBING PROPERTIES AND HIGH STABILITY TO WEATHERING - The present invention relates to a polymer composition including a transparent thermoplastic plastic, an inorganic infrared absorber, also referred to as IR absorber hereinbelow, optionally an inorganic nano-scale pigment, and the combination of at least one organic colouring agent of a specific structure, and to the preparation and use of the polymer compositions according to the invention and to products produced therefrom. | 06-21-2012 |
20120213982 | POLYCARBONATE PLATES WITH IMPROVED FLAME RESISTANCE - The invention relates to flame resistant polycarbonate plates characterised in that the flame-proof properties thereof are maintained even after long exposure to weathering. | 08-23-2012 |
20120231278 | POLYCARBONATE COMPOSITION HAVING IMPROVED FLAME RESISTANCE FOR EXTRUSION APPLICATIONS - The present invention relates to compositions which contain flame-retardant polycarbonate and are suitable for the production of flame-resistant and milky-white sheets. | 09-13-2012 |
20120244359 | POLYCARBONATE COMPOSITION HAVING IMPROVED FLAME RESISTANCE FOR EXTRUSION APPLICATIONS - The present invention relates to compositions containing flame retardant polycarbonate, which are suitable for producing flame-resistant milk-white coloured plates. | 09-27-2012 |
20130005873 | POLYCARBONATE COMPOSITIONS WITH PHENOLICALLY SUBSTITUTED TRIAZINE DERIVATIVE - The invention relates to compositions containing polycarbonate and defined quantities of a triazine, and to the production and use thereof for producing moulded parts, in particular optical quality sheets and tubes, according to an extrusion method | 01-03-2013 |
20130098736 | TRANSPORT DEVICE FOR SLABS, COMPRISING AT LEAST TWO LINEAR CONVEYING SECTIONS WHICH CAN PIVOT INDEPENDENTLY OF EACH OTHER - A transport device for slabs, which device is arranged between at least two casting machines and at least one rolling mill. The transport device has at least two linear and stationary conveyor sections on which a slab can be conveyed in a conveying direction. The transport device further has at least two linear conveyor sections which are arranged to be pivotable in order to convey a slab at an angle to the conveying direction. In order to improve guidance of the slabs and provide a flexible transport of the slabs from the casting machines to the rolling mill, the at least two linear, pivotable conveyor sections are arranged to be pivotable independently of one another. | 04-25-2013 |
20140058025 | FLAME RETARDANT, THERMOPLASTIC POLYCARBONATE MOLDING COMPOSITIONS - A flame-retardant thermoplastic molding composition is disclosed. The composition contains aromatic polycarbonate resin, about 0.01 to 0.15 wt.-% of a salt, wherein the salt is an alkali metal or alkaline earth metal salt of perfluoroalkane sulfonic acid, aromatic sulfimide, ar aromatic sulfonic add, and about 0.5 to 10 wt.-% of poly- and/or oligo-aryloxysiloxane (herein after referred as aryloxysiloxane) as flame-retardant synergist. The inventive composition is characterized in that its flammability rating is better than that of aromatic polycarbonate resin containing only inorganic salt of a derivative from aliphatic or aromatic sulfonic acid, sulphonamide or sulfonimide in accordance with UL-94 V standard, while mechanical and optical properties of the compositions are maintained. | 02-27-2014 |
20140121309 | ORGANIC COLOURING AGENTS AND COLOURED POLYMER COMPOSITIONS WITH A HIGH STABILITY TO WEATHERING - The present invention relates to organic colouring agents with a high colour stability to weathering for thermoplastics. The invention furthermore relates to a polymer composition containing at least one thermoplastic and at least one organic colouring agent, preferably a combination of at least two organic colouring agents, of a specific structure. The invention moreover relates to the use of the colouring agents according to the invention for colouring polymer compositions, in particular for transparent formulations such as are required for the production of panes for use in buildings, motor vehicles and track vehicles or aircraft. | 05-01-2014 |
20140234601 | PROCESS FOR PRODUCING METALLIZED MULTI-LAYER BODIES FROM SPECIAL POLYCARBONATES - The invention relates to a process for producing multi-layer bodies which carry at least one metal layer. The invention further relates to multi-layer products having at least three layers, comprising a substrate layer made of a substrate and containing special copolycarbonates, a metal layer and at least one additional layer. | 08-21-2014 |
20140242364 | POLYCARBONATE COMPOSITIONS HAVING GOOD METALLIZABILITY - The invention relates to blends of special copolycarbonates and special polyetherimides or special polyarylsulfones which have good metallizability and to compositions of said copolycarbonate blends optionally containing additives which are selected from the group of thermo stabilizers and release agents, to the use thereof for producing molded parts and to molded parts produced therefrom. The invention further relates to multilayer products comprising a substrate which contains the compositions according to the invention, said products comprising at least one further layer, preferably a metal layer, on at least one side, and to methods for producing said products. | 08-28-2014 |
20140295160 | MULTI-LAYER BODIES MADE OF POLYCARBONATE WITH A DEEP GLOSS EFFECT - Multi-layer bodies comprising: 1) a base layer comprising at least one thermoplastic; nanoscale carbon black in an amount of from 0.05 to 0.15 wt. %; a demoulding agent based on a fatty acid ester in a concentration of from 0.1 to 0.5 wt. %, 2) at least on one side of the base layer a scratch-resistant coating based on polysiloxane having a thickness of from 2 to 15 μm, comprising at least one UV absorber, wherein the sum of the values of the above-mentioned components of the base layer is 100 wt. %. | 10-02-2014 |
20140322509 | MULTI-LAYER BODIES MADE OF POLYCARBONATE WITH A DEEP GLOSS EFFECT - The present invention relates to dark multilayer bodies made from polycarbonate, which are characterised by a glass-like deep-gloss effect on the surface. The invention also relates to a method for producing these multilayer bodies. The multilayer bodies are preferably synthesised from polycarbonate or polycarbonate blends. The polycarbonate blends can contain further polymers such as for example elastomers or graft polymers, or further thermoplastics such as polyesters for example. The invention also relates to the use of the multilayer bodies according to the invention as panels for vehicle parts or as frame parts for multimedia housings. | 10-30-2014 |
20140329071 | METALLIZED MULTILAYER STRUCTURE MADE OF SPECIFIC POLYCARBONATES WITH LOW COEFFICIENT OF THERMAL EXPANSION - The invention relates to multilayer structures made of at least one thermoplastic material and having at least one metal layer. The invention further relates to multilayer products encompassing at least three layers comprising a substrate layer made of a substrate comprising specific copolycarbonates and at least one inorganic filler, a metal layer and one or more further layers. The invention further relates to the process for producing the said multilayer structures. | 11-06-2014 |
20140356551 | MOLDED BODIES HAVING HIGH SURFACE QUALITY - The invention relates to thermoplastic compositions comprising A) 30.0 to 100.0 parts by wt. of at least one aromatic polycarbonate, B) 0.0 to 50.0 parts by wt. of a rubber-modified graft polymer and/or vinyl copolymer, C) 0.00 to 50.00 parts by wt. of polyester, D) 5.0 to 50.0 parts by wt. of at least one inorganic filler having a particle shape selected from the group including spherical/cubic, tabular/discus-shaped and lamellar geometries, and E) 0.00 to 5.00 parts by wt. of further conventional additives. The invention further relates to thermoplastic shaped articles having a high surface quality, high dimensional stability and high heat distortion temperature, as well as thermoplastic moulding compositions and a process for the production of the shaped articles. The present invention moreover relates to the coated finished parts produced from the thermoplastic shaped parts. | 12-04-2014 |
20150050484 | POLYMER COMPOSITION HAVING HEAT-ABSORBING PROPERTIES AND IMPROVED COLOUR PROPERTIES - An embodiment of the present invention relates to a composition comprising a) at least one transparent thermoplastic material; b) at least one inorganic IR absorber comprising at least one boride compound present in an amount of from 0.0015 wt. % to 0.015 wt. %, calculated as solids content of boride in the total polymer composition; and c) at least one inorganic, nano-scale pigment present in an amount of from 0.0008 wt. % to 0.0035 wt. %, based on the total composition; and d) optionally further additives. | 02-19-2015 |