Abstract: A method for producing a molding compound having improved surface properties is provided. The method relates to, in particular, a molding compound comprising a polycarbonate and at least one reinforcing filler, preferably selected from the group including titanium dioxide (TiO2), talc (Mg3Si4O10(OH)2), dolomite CaMg[CO3]2, kaolinite Al4[(OH)8|Si4O10] and wollastonite Ca3[Si3O9], preferably selected from the group including titanium dioxide (TiO2) and talc (Mg3Si4O10(OH)2). The total amount of reinforcing filler is 3 to 20 wt. %, preferably 4.5 to 15 wt. %, each relative to the total mass of the molding compound, the molding compound having improved properties being produced using at least one master batch produced according to the method.

Abstract: A method for producing a master batch having improved properties is provided. The method relates to, in particular, a master batch containing a polycarbonate and a reinforcing filler, preferably selected from one or more members of the group including the members titanium dioxide (TiO2), talc (Mg3Si4O10(OH)2), dolomite CaMg[CO3]2, kaolinite Al4[(OH)8|Si4O10] and wollastonite Ca3[Si3O9], preferably selected from one or more members of the group including the members titanium dioxide (TiO2) and talc (Mg3Si4O10(OH)2). The content of the reinforcing filler is 30 to 70 wt. %, preferably 35 to 65 wt. %, particularly 40 to 60 wt. %, relative to the total weight of the molding compound. A method for producing a molding compound having improved properties is also provided.

Abstract: The invention relates to a method for producing a molding compound having improved properties. In particular, the invention relates to the production of a molding compound containing a polycarbonate and a reinforcing filler. According to the invention, said molding compound can be obtained by compounding a polycarbonate and the reinforcing filler by means of multi-shaft extruder having screw shafts arranged annularly with respect to one another. The reinforcing filler is preferably selected from one or more members of the group comprising the members titanium dioxide (TiO2), talc (Mg3Si4O10(OH)2), dolomite (CaMg[CO3]2). kaolinite (Al4[(OH)8|Si4O10]) and wollastonitc (Ca3[Si3O9]), preferably from one or more members of the group comprising the members titanium dioxide (TiO2) and talc (Mg3Si4O10(OH)2). According to the invention, tlie concentration of reinforcing filler is 3 to 50 wt % in relation to the total mass of tlie molding compound.

Abstract: The invention relates to compositions containing (A) at least one polymer selected from the groups of aromatic polycarbonates and aromatic polyester carbonates and (B) at least one Bronsted-acidic compound, such as ethylenediaminetetraacetic acid (EDTA), and also relates to a process for producing compositions using components (A), (B) and optionally further components, wherein at least one of the employed components is alkaline or contains alkaline constituents, to compositions obtained by this process and to the use of the compositions for producing molded articles and to the molded articles themselves.

Abstract: The invention relates to a compounding method for producing impact-modified polycarbonate compositions using components acting as an alkali or using alkaline constituent-containing components. By using the method according to the invention, the harmful influence of the components acting as an alkali on the properties of polycarbonate molding compositions or the surface of molded bodies produced therefrom is counteracted. The method has the steps (i), (ii), and optionally (iii), wherein (i) in a first step A) 10 to 98 wt. % of at least one polymer selected from the group of aromatic polycarbonates and aromatic polyester carbonates, B) 0.001 to 0.3 wt. % of at least one organic Brønsted acid, i.e. a carbon and hydrogen-containing Brønsted acid, C) 0.0001 to 0.008 wt. % of at least one inorganic Brønsted acidic phosphorus compound, i.e. a Brønsted acidic phosphorus compound which does not contain carbon, D) 1 to 90 wt. % of at least one rubber-containing vinyl(co)polymerisate, E) 0 to 90 wt.

Abstract: The invention relates to a compounding method for producing impact-modified polycarbonate compositions using components acting as an alkali or using alkaline constituent-containing components. By using the method according to the invention, the harmful influence of the components acting as an alkali on the properties of polycarbonate molding compositions or the surface of molded bodies produced therefrom is counteracted. The method has the steps (i), (ii), and optionally (iii), wherein (i) in a first step A) 10 to 98 wt. % of at least one polymer selected from the group of aromatic polycarbonates and aromatic polyester carbonates, B) 0.001 to 0.3 wt. % of at least one organic Brønsted acid, i.e. a carbon and hydrogen-containing Brønsted acid, C) 0.0001 to 0.008 wt. % of at least one inorganic Brønsted acidic phosphorus compound, i.e. a Brønsted acidic phosphorus compound which does not contain carbon, D) 1 to 90 wt. % of at least one rubber-containing vinyl(co)polymerisate, E) 0 to 90 wt.

Abstract: The invention relates to a method for producing compositions containing vinylaromatic copolymers which are obtained in an emulsion polymerization process and comprise production-related salt inclusions. Said compositions are characterized by an improved surface quality once the extruded polymer, before being granulated, or the granulate, after being granulated, has been moistened by bringing the polymer in contact with liquid water in a water bath, a tube system filled with water, or a dipping tank, thus making the compositions suitable for producing molded articles having a class A surface that remains flawless over time.

Abstract: The invention relates to a method for producing compositions containing vinyl-aromatic copolymers that are obtained in an emulsion polymerization process and comprise production-related salt inclusions. Said compositions are characterized by improved surface quality following storage in a warm-humid environment and are therefore suitable for producing molded articles having a class A surface that remains flawless over time.

Abstract: The invention relates to polymer compounds containing A) 0 to 98 parts by weight, based on the sum of A and B, of a thermoplastic polymer, or a mixture of a plurality of thermoplastic polymers differing from B, and B) 2 to 100 parts by weight, based on the sum of A and B, of B 1) at least one graft polymer produced by an emulsion polymerisation process, B2) optionally at least one graft polymer produced in a mass, suspension or solution polymerisation process, B3) optionally at least one rubber-free vinyl (co)polymer and (C) 0 to 30 parts by weight of at least one commercially available polymer additive, wherein the total of parts by weight A and B is 100.

Abstract: The present invention relates to a process for the preparation of stabilized impact-modified polycarbonate compositions using dilute aqueous acidic solutions, and to the compositions so prepared themselves.

Abstract: The present invention relates to a polymer composition containing polycarbonate with a weight-average molecular weight Mw of from 24,000 to 33,000 and 5.0 wt. % to 20.0 wt. % (based on the total amount of the composition) of glass hollow spheres with an alkalinity of less than 1.0 meq/g. The present invention furthermore provides coextruded sheets in which the coextruded layer contains this polymer composition, and shaped articles produced therefrom, in particular containers and pieces of luggage, very particularly suitcases. Sheets which are obtainable with the polymer composition according to the invention have a high mechanical stability, a high scratch resistance, pleasant haptic properties and an excellent homogeneous external visual impression. The present invention furthermore relates to a process for the preparation of these polymer compositions and a process for production of the sheets according to the invention.

Abstract: The invention relates to a method for producing compositions containing vinylaromatic copolymers which are obtained in an emulsion polymerization process and comprise production-related salt inclusions. Said compositions are characterized by an improved surface quality once the granulates have been moistened by bringing same in contact with liquid water and have been stored in said water, thus making the compositions suitable for producing molded articles having a class A surface that remains flawless over time.

Abstract: The invention relates to a method for producing compositions containing vinylaromatic copolymers which are obtained in an emulsion polymerization process and comprise production-related salt inclusions. Said compositions are characterized by an improved surface quality once the extruded polymer, before being granulated, or the granulate, after being granulated, has been moistened by bringing the polymer in contact with liquid water in a water bath, a tube system filled with water, or a dipping tank, thus making the compositions suitable for producing molded articles having a class A surface that remains flawless over time.

Abstract: The invention relates to a method for producing compositions containing vinyl-aromatic copolymers that are obtained in an emulsion polymerization process and comprise production-related salt inclusions. Said compositions are characterized by improved surface quality following storage in a warm-humid environment and are therefore suitable for producing molded articles having a class A surface that remains flawless over time.

Abstract: A mixing silo for free-flowing finely divided solid materials, in particular for powdered, fibrous and/or granular mixed material, especially polymer granules, specifically suited for mixing polymer granules, having an excellent mixing quality and at the same time a simplified and improved suitability for washing out in order to avoid cross contamination. The mixing silo may be used for homogenizing possibly inhomogeneous polymer granule batches in the form of a stream of product from a process producing polymer granules.

Abstract: The invention relates to polymer compounds containing A) 0 to 98 parts by weight, based on the sum of A and B, of a thermoplastic polymer, or a mixture of a plurality of thermoplastic polymers differing from B, and B) 2 to I 00 parts by weight, based on the sum of A and B, of B I) at least one graft polymer produced by an emulsion polymerisation process, B2) optionally at least one graft polymer produced in a mass, suspension or solution polymerisation process, B3) optionally at least one rubber-free vinyl (co)polymer and (C) 0 to 30 parts by weight of at least one commercially available polymer additive, wherein the total of parts by weight A and B is 100.

Abstract: 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 ?m, comprising at least one UV absorber, wherein the sum of the values of the above-mentioned components of the base layer is 100 wt. %.

Abstract: The present invention relates to a process for the preparation of stabilised impact-modified polycarbonate compositions using dilute aqueous acidic solutions, and to the compositions so prepared themselves.

Abstract: The present invention relates to a polymer composition containing polycarbonate with a weight-average molecular weight Mw of from 24,000 to 33,000 and 5.0 wt. % to 20.0 wt. % (based on the total amount of the composition) of glass hollow spheres with an alkalinity of less than 1.0 meq/g. The present invention furthermore provides coextruded sheets in which the coextruded layer contains this polymer composition, and shaped articles produced therefrom, in particular containers and pieces of luggage, very particularly suitcases. Sheets which are obtainable with the polymer composition according to the invention have a high mechanical stability, a high scratch resistance, pleasant haptic properties and an excellent homogeneous external visual impression. The present invention furthermore relates to a process for the preparation of these polymer compositions and a process for production of the sheets according to the invention.

Abstract: The present invention relates to a compounding method for producing impact-modified thermoplastic compositions with a low content of volatile organic compounds (hereinafter VOCs), wherein relatively inexpensive polymer raw materials with a comparatively elevated initial VOC content may be used, resulting in lowered production costs for producing such VOC-reduced polymer compositions.