Patent application number | Description | Published |
20090029154 | PHOTOCHROMIC MOLDING COMPOSITIONS AND ARTICLES PRODUCED THEREFROM - A polyamide molding composition is described, comprising at least one transparent polyesteramide in a proportion by weight of from 70 to 99.99% by weight; at least one further polymer in a proportion by weight of from 0 to 30% by weight; at least one photochromic dye in a proportion by weight of from 0.01 to 2% by weight; and also optionally further dyes and/or additives. The invention further encompasses articles manufactured therefrom, e.g. foils, for the coating of photochromic ophthalmic lenses, or the like. | 01-29-2009 |
20090247699 | Polyamide moulding compound for varnish-free, tough casings with a high-gloss surface - The invention relates to a polyamide moulding compound, containing
| 10-01-2009 |
20100022742 | POLYAMIDE MOLDING COMPOUND AND ITS USE FOR PRODUCING TRANSPARENT, HOT-STEAM-STERILIZABLE MOLDED PARTS AND EXTRUDATES - The invention relates to a polyamide molding material or copolyamide molding material and the use of such a polyamide molding material or copolyamide molding material for producing steam-sterilizable transparent moldings and extrudates. This polyamide molding material is characterized in that it comprises at least one copolyamide formed from 35-42 mol % of bis(4-amino-3-methylcyclohexyl)methane (MACM), 35-42 mol % of isophthalic acid (IPS) and 16-30 mol % of laurolactam (LC12). MACM may be replaced up to 50% by bis(4-aminocyclohexyl)-methane (PACM) and IPA up to 50% by terephthalic acid (TPA). The polyamide molding material may also be a blend of copolyamides or a blend of copolyamides with polyamide 12. The relative viscosity (RV) of the polyamide molding material or copolyamide molding material is in any case adjusted to a value which is greater than 1.45. Steam-sterilizable and transparent standard specimens which are produced from such polyamide molding materials or copolyamide molding materials and whose composition corresponds to the transparent moldings and extrudates have a tensile strain at break which, after undergoing at least 140 and especially preferably at least 350 steam sterilization cycles, is above the stretching limit. | 01-28-2010 |
20100144963 | Transparent, Amorphous Polyamide Moulding Compounds and Use Thereof - A transparent, amorphous polyamide moulding compound contains polyamides which are formed by polycondensation of a linear aliphatic dicarboxylic acid with a cycloaliphatic diamine and also blends thereof, and also additives and/or colourants. The linear aliphatic dicarboxylic acid is selected from dicarboxylic acids with 17 to 21 C atoms and the diamine is bis(3-methyl-4-aminocyclohexyl)methane (MACM) and cross-linking additives, in the case of the additives, and photochromic colourants, in the case of the colourants, are precluded. | 06-10-2010 |
20100227163 | OPTICAL FILTER - The invention relates to an optical filter which comprises at least one optically effective layer and a protective layer on both sides, with at least one of the protective layers being a non-stretched protective polyamide layer which is cast from the solution. The optical filter in accordance with the invention is characterized in that the at least one protective polyamide layer consists of PA MACMI/12 and optional aggregates chosen as required. The at least one protective polyamide layer has a content of laurotactam of 23 mole percent to 57 mole percent in relation to the entire polyamide. | 09-09-2010 |
20100297373 | POLYAMIDE MOULDING COMPOUND AND USE THEREOF - The present invention relates to polyamide moulding compounds which have very low distortion with good mechanical properties. This is achieved by a combination of transparent polyamide with fibrous reinforcing materials and also particulate fillers. The moulding compounds according to the invention are used for the production of any moulded articles, semi-finished products or finished products. | 11-25-2010 |
20100323185 | METALLICALLY COATED LIGHT-REFLECTING COMPONENTS BASED ON THERMOPLASTIC MOLDING COMPOUNDS - Relates to the use of a thermoplastic polymer molding compound for producing metallically coated light-reflecting components based on thermoplastics, which are suitable for operating temperatures of at least 200° C. The polymer molding compound used according to the present invention is characterized in that it comprises polyamides which are selected from a group which comprises homopolyamides, copolyamides, and mixtures (blends) made of homopolyamides and copolyamides and mixtures made of homopolyamides or copolyamides, these polyamides being selected from a group which comprises amorphous and transparent polyamides, and these polyamides having a glass transition temperature (Tg) of at least 205° C. Light-reflecting components produced according to the use according to the present invention are suitable for operating temperatures of at least 200° C. and comprise reflectors for traveling lights of vehicles, for signal and lighting devices, and reflectors for solar collectors. | 12-23-2010 |
20110105697 | POLYAMIDE MOULDED MASSES CONTAINING SEMI-CRYSTALLINE TRANSPARENT COPOLYAMIDES FOR PRODUCING HIGH FLEXIBLE TRANSPARENT MOULDED PARTS WITH HIGH NOTCH-IMPACT STRENGTH, LOW WATER ABSORBENCY AND EXCELLENT RESISTANCE TO CHEMICALS - The invention relates to polyamide moulded masses based on semi-crystalline, transparent copolyamides predominantly based on aliphatic monomers, for producing transparent or pigmentable moulded parts with a high level of flexibility, high notch-impact strength (Charpy), low water absorbency and excellent resistance to chemicals, containing between 40 and 100 wt. % of at least one transparent copolyamide (constituent A) with a maximum glass transition temperature (Tg) of 80° C. and a melting temperature of at least 150° C., and a melting enthalpy of at least 20 J/g, preferably at least 30 J/g, consisting of at least two different diamines selected from the group consisting of linear and/or branched-chain aliphatic diamines with between 9 and 14 carbon atoms and cycloaliphatic diamines, especially between 6 and 36 carbon atoms, the concentration of cycloaliphatic diamine being between 10 and a maximum of 40 mol % and the concentration of aliphatic diamine at least 60 mol %, respectively in relation to the total diamine content, and of at least one aliphatic dicarboxylic acid, especially between 6 and 36 carbon atoms, and between 0 and 60 wt. % of at least one other polymer (constituent B) selected from the group consisting of amorphous or semi-crystalline homopolyamides or copolyamides, polyether ester amides, polyether amides, polyester amides or mixtures thereof, between 0 and 10 wt. % of other additives (constituent C) selected from the group consisting of UV stabilisers, heat stabilisers, free-radical scavengers and/or processing auxiliary agents, inclusion inhibitors, lubricants, mould-release auxiliary agents, softeners, functional additives for influencing optical properties, especially the refractive index, impact-resistant modifiers, nanoscale fillers and/or loaders, optical brighteners, dyes or mixtures thereof, the constituents (A), (B) and (C) amounting to 100 wt. %. | 05-05-2011 |
20110143113 | SEALING STRIPS FOR VEHICLE WINDOWS - The invention relates according to a first aspect to a sealing strip ( | 06-16-2011 |