Abstract: The present invention relates to polycarbonate compositions comprising: A) an aromatic polycarbonate and/or aromatic polyester carbonate; B) a graft polymer obtainable by co-precipitation of a mixture of at least two graft polymer dispersions B.1 and B.2, wherein the production of the graft polymer component B.1 takes place using at least one redox system as initiator and wherein the production of the graft polymer component B.2 takes place using at least one persulfate compound as initiator; C) optionally a vinyl (co)polymer and/or polyalkylene terephthalate; D) optionally a phosphorus-containing flame retardant; E) at least one phenolic antioxidant; F) optionally a neutral phosphorus- or sulfur-containing co-stabilisers (synergists); and G) optionally additives. Compositions of the present invention are distinguished by an optimum combination of good hydrolysis resistance and a light natural colour.

Abstract: A masterbatch comprising pigment and demolding agent is provided. The demolding agent is selected from the group comprising low molecular weight polyolefin oils, low molecular weight polyolefin waxes, montan waxes and aliphatic or aromatic carboxylic acid esters of fatty acids and/or fatty alcohols, wherein the pigment content of the masterbatch is from 3 to 70 wt. %, based on the total weight of the masterbatch. The masterbatch is suitable for preparation of a polymer composition having improved pigment dispersion.

Abstract: The present invention relates to polycarbonate compositions having improved processing stability, increased heat stability and a good natural color, and to their preparation and use, wherein the polycarbonate compositions contain an adsorber or absorber and an acid. The present invention relates further to a compounding process for the preparation of heat stabilized polycarbonate compositions containing constituents having a basic action, using acids applied to an adsorber or absorber. The present invention relates further to the use of Brönsted acids applied to an adsorber or absorber for the heat stabilization of polymer mixtures, containing basic impurities, containing at least one polymer prepared by polycondensation, during compounding and thermal shaping.

Abstract: The present invention relates to a polycarbonate composition comprising polyalkyl(alkyl)acrylate having a specific molecular weight and an impact modifier, as well as to moulded bodies obtainable from these compositions. Compositions according to the present invention exhibit superior properties, in particular with respect of low-temperature strength and melt flowability.

Abstract: The invention relates to an igniting unit (10), especially for an inflator, comprising an electric igniter (11) including a first inner cap (12) which forms a space (14) for being filled with a booster propellant charge with a second outer cap (13). in accordance with the invention, the second cap (13) is an electrically non-conductive insulating cap.

Abstract: Method for enantioseparation of a chiral system with compound formation comprising a pair of enantiomers. The method comprises the steps of: placing the chiral system to be processed, which is optically enriched by a target enantiomer, in the 3-phase region of the ternary phase diagram of chiral compound forming systems to achieve the establishment of the solid/liquid phase equilibria; phase-separating the liquid and solid phase formed by the placing step; shifting the eutectic composition of the remaining liquid towards a lower eutectic composition (xE) until the overall composition is located in the 2-phase region of the ternary phase diagram of chiral compound forming systems; and performing crystallization in the 2-phase region of the ternary phase diagram for obtaining the target enantiomer in the solid phase. In some cases the shifting step can be skipped.

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: The present invention relates to moulding compositions of polycarbonates and graft polymers and optionally further additives and components, which have, in addition to a high resistance to chemicals, a good resistance to heat, in particular a low tendency towards yellowing and a low tendency towards degradation when exposed to heat. In a particular, flameproofed embodiment, the after-burn time in a UL94 classification is furthermore reduced.

Abstract: The present invention relates to impact-modified polycarbonate molding compositions, the use thereof for producing shaped bodies and moldings, as well as shaped bodies and molding produced therefrom themselves. Compositions of the present invention comprise mixtures of graft polymers prepared in the emulsion polymerization process and in the bulk, solution and/or suspension polymerization process having a defined grafted particle size distribution. Compositions of the present invention, on the one hand are suitable for producing, over a wide processing window, (i.e. also at high processing temperatures), non-lacquered components having a high gloss surface, and on the other hand, are also capable of precise imaging of fine-grained or surface-etched mold surfaces.

Abstract: The present invention relates to a process for the preparation of compositions comprising vinyl aromatic copolymers prepared by the emulsion polymerisation process and having salt inclusions resulting from their preparation, which compositions are distinguished by an improved surface quality after storage under warm moist conditions and in that respect are suitable for the production of molded bodies having a class A surface.

Abstract: The present invention relates to a composite component comprising i) a support made of a thermoplastic composition comprising A) at least one polymer selected from the group consisting of aromatic polycarbonates, aromatic polyester carbonates, aromatic polyesters, and mixtures thereof, in an amount of from 20.0 to 85.0 parts by wt., based on the sum of components A and B; B) at least one rubber-modified vinyl (co)polymer in an amount of from 15.0 to 80.0 parts by wt., based on the sum of components A and B, and with a rubber content [RB] of at least 25.0 parts by wt., based on component B; and C) at least one polymer additive in an amount of from 0 to 30.0 parts by wt., based on the sum of components A to C; and ii) at least one polyurethane layer, wherein the thermoplastic composition comprises a total rubber content [R], of at least 12 parts by wt., based on the sum of components A to C.

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 invention concerns a method for separating a racemic compound-forming chiral substance by a cyclic crystallization process which is conducted in at least one first crystallization unit (10) and in at least one second crystallization unit (18), wherein in a first process cycle an enantiomer is crystallized in the first crystallization unit (10) and a racemic compound is crystallized in the second crystallization unit (18), wherein in a second process cycle the enantiomer is crystallized in the second crystallization unit (18) and the racemic compound is crystallized in the first crystallization unit (10), wherein during each process cycle in at least one process sub-step (B?C, F?G) a mother liquor (12) being contained in the first crystallization unit (10) is mutually exchanged with a mother liquor (20) being contained in the second crystallization unit (18). An auto-seeding process sub-step is applied at the beginning of a process cycle.

Abstract: A composite and process for the production of a composite component, comprising a) a support of a thermoplastic composition, and b) at least one polyurethane layer in direct contact with the support.

Abstract: The present invention relates to non-aging, impact-modified polycarbonate compositions and molding compositions comprising: A) from 60 to 86 parts by weight (based on the sum of components A+B+C) of aromatic polycarbonate and/or aromatic polyester carbonate, B) from 4 to 12 parts by weight (based on the sum of components A+B+C) of graft polymer comprising: B.1 from 10 to 50 wt. % (based on the graft polymer B) of a shell of at least one vinyl monomer, and B.2 from 90 to 50 wt. % (based on the graft polymer B) of a graft base of silicone-acrylate composite rubber, C) from 10 to 30 parts by weight (based on the sum of components A+B+C) of a polymer or copolymer based on vinyl monomer, and D) from 0 to 20 parts by weight of polymer additives.

Abstract: The invention relates to glass fiber reinforced polycarbonate compositions and molding compositions of the present investor and distinguished by high rigidity, high flowabillty, high processing stability, good chemical resistance and good aging resistance vis-à-vis the effects of light and heat compared with the prior art. The present invention also relates to the use of the compositions for the production of shaded articles and to shaped articles comprising the compositions according to the invention.

Abstract: The present invention relates to flame-protected impact-modified polycarbonate compositions, wherein the compositions are free of rubber-free polyalkyl (alkyl)acrylate. The present invention further relates to the use of the polycarbonate compositions in the production of molded bodies, and to the molded bodies themselves.

Abstract: The invention relates to impact-modified polycarbonate compositions which are distinguished by high heat resistance and good melt flow behavior. In addition, the moldings produced from the compositions according to the invention in an injection-molding process can be metallised, the resulting metallised moldings having a surface with a particularly high and, in particular, homogeneous gloss. The invention thus also provides the metallised moldings produced from the compositions 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.