Abstract: The present invention relates to a process for the solidification of hexyl 2-[4-(diethylamino)-2-hydroxybenzoyl]benzoate (INCI diethylamino hydroxybenzoyl hexyl benzoate, DHHB), wherein the process comprises a step (a) of applying a shear rate of at least 400 s-1 to liquid hexyl 2-[4-5 (diethylamino)-2-hydroxybenzoyl]benzoate.

Abstract: Thermoplastic molding compositions comprising A) from 10 to 99.7% by weight of a polyamide, B) from 1 to 30% by weight of an impact modifier, C) from 0.1 to 10% by weight of a copolymer of C1) from 50 to 95% by weight of styrene or substituted styrenes of the general formula I or a mixture of these in which R is an alkyl radical having from 1 to 8 carbon atoms or a hydrogen atom and R1 is an alkyl radical having from 1 to 8 carbon atoms and n has the value 0, 1, 2, or 3, and C2) from 5 to 50% by weight of structural units derived from one or more dicarboxylic anhydrides, D) from 0.001 to 20% by weight of iron powder, E) from 0.

Abstract: Thermoplastic molding compositions comprising A) from 10 to 99.7% by weight of a polyamide, B) from 1 to 30% by weight of an impact modifier, C) from 0.1 to 10% by weight of a copolymer of C1) from 50 to 95% by weight of styrene or substituted styrenes of the general formula I or a mixture of these in which R is an alkyl radical having from 1 to 8 carbon atoms or a hydrogen atom and R1 is an alkyl radical having from 1 to 8 carbon atoms and n has the value 0, 1, 2, or 3, and C2) from 5 to 50% by weight of structural units derived from one or more dicarboxylic anhydrides, D) from 0.001 to 20% by weight of iron powder, E) from 0.

Abstract: The present invention relates to a porous inorganic body comprising pores A having a pore size SA in the range of from 0.005 to 20 micrometer and a total pore volume VA, and comprising pores B having a pore size SB in the range of from more than 20 to 1000 micrometer and a total pore volume VB, wherein the total pore volume of the pores having a pore size in the range of from 0.005 to 1000 micrometer is VC and wherein the ratio RA=VA/VC is in the range of from 0.3 to 0.7 as determined via mercury intrusion porosimetry.

Abstract: The present invention relates to thermoplastic molding materials comprising the following components: (A) at least one polyarylene ether, (B) at least one polyarylene sulfide, (C) optionally at least one functionalized polyarylene ether comprising carboxyl groups, (D) at least one fibrous or particulate filler and (E) optionally further additives and/or processing assistants, the ratio of the apparent viscosity of the component (A) to that of the component (B), determined at 350° C. and a shear rate of 1150 s?1, being from 2.5 to 3.7.

Abstract: The invention relates to thermoplastic moulding compositions comprising A) between 55 to 98% in weight of at least one vinyl aromatic copolymer modified with a particulate graft rubber, B) between 1 to 44% in weight of a flame retardant comprising B1) an expandable graphite, B2) a flame-retardant compound comprising phosphorus, and B3) a fluorine-containing polymer, C) between 1 to 20% in weight of a non-particulate-forming rubber comprising polar groups, and D) between 0 to 40% in weight of additional additives, where the weight percentages are respectively based on the total weight of components A) to D), and said percentages add up to a total of 100% in weight, and the polybutadiene content is between 0 to 11I % in weight.

Abstract: Thermoplastic molding compositions comprising A) from 10 to 99.7% by weight of a polyamide, B) from 1 to 30% by weight of an impact modifier, C) from 0.1 to 10% by weight of a copolymer of C1) from 50 to 95% by weight of styrene or substituted styrenes of the general formula I or a mixture of these in which R is an alkyl radical having from 1 to 8 carbon atoms or a hydrogen atom and R1 is an alkyl radical having from 1 to 8 carbon atoms and n has the value 0, 1, 2, or 3, and C2) from 5 to 50% by weight of structural units derived from one or more dicarboxylic anhydrides, D) from 0.001 to 20% by weight of iron powder, E) from 0.

Abstract: A mixture which comprises a) from 5 to 95% by weight of a copolymer A which comprises one or more copolymer blocks (B/S)A each composed of from 65 to 95% by weight of vinylaromatic monomers and from 35 to 5% by weight of dienes and of a glass transition temperature TgA in the range from 40° to 90° C., b) from 95 to 5% by weight of a block copolymer B which comprises at least one hard block S composed of from 95 to 100% by weight of vinylaromatic monomers and of from 0 to 5 by weight of dienes, and comprises one or more copolymer blocks (B/S)A each composed of from 65 to 95% by weight of vinylaromatic monomers and of from 35 to 5% by weight of dienes and of a glass transition temperature TgA in the range from 40° to 90° C., and comprises one or more copolymer blocks (B/S)B each composed of from 20 to 60% by weight of vinylaromatic monomers and of from 80 to 40% by weight of dienes and of a glass transition temperature TgB in the range from ?70° to 0° C.

Abstract: A shell-and-tube heat exchanger, for removing volatile substances from a polymer solution by degasification, includes a bundle of tubes arranged vertically and parallel to each other in a shell chamber through which a fluid heat-transfer medium flows. The upper end of each tube is fixed in an upper tube sheet and the lower end of each tube is fixed in a lower tube sheet, and the polymer solution flows through the tubes in the direction of gravity. One feature is that a multilayer woven wire fabric is attached to the top of the upper tube sheet. The finest meshed layer of the fabric has a mesh width of 50 ?m to 1000 ?m. The invention also relates to a method for removing volatile substances from a polymer solution by degasification in a shell-and-tube heat exchanger and use of the shell-and-tube heat exchanger.

Abstract: Processes for producing thermoplastic molding compositions, which comprise a) from 3 to 79% by weight of one or more (methyl)styrene-acrylonitrile copolymers, which have no maleic-anhydride-derived units, b) from 15 to 91% by weight of one or more polyamides, c) from 5 to 50% by weight of one or more rubbers, d) from 1 to 25% by weight of one or more compatibilizers, e) from 0 to 2% by weight of one or more low-molecular-weight compounds which comprise a dicarboxylic anhydride group, f) from 0 to 50% by weight of one or more fibrous or particulate fillers, and g) from 0 to 40% by weight of further additives, by producing a melt comprising components A, B, and C in a first step and subsequently incorporating D, Also, thermoplastic molding compositions obtainable by these processes, the use of these thermoplastic molding compositions, and moldings, fibers, and foils comprising these thermoplastic molding compositions.

Abstract: The present invention relates to a porous inorganic body comprising pores A having a pore size SA in the range of from 0.005 to 20 micrometer and a total pore volume VA, and comprising pores B having a pore size SB in the range of from more than 20 to 1000 micrometer and a total pore volume VB, wherein the total pore volume of the pores having a pore size in the range of from 0.005 to 1000 micrometer is VC and wherein the ratio RA=VA/VC is in the range of from 0.3 to 0.7 as determined via mercury intrusion porosimetry.

Abstract: The invention relates to a process for the preparation of thermoplastic molding materials comprising A) from 39 to 99% by weight of at least one thermoplastic polymer, B) from 1 to 60% by weight of a flameproofing component comprising B1) an expandable graphite, and C) from 0 to 60% by weight of further additives, the percentages by weight being based in each case on the total weight of the components A) to C) and together giving 100% by weight, by mixing melts of the components A), B) and, if present, C) in a screw extruder, the screw extruder comprising at least one metering zone, one plasticating zone, one homogenization zone and one discharge zone in this sequence along the conveying direction, wherein the metering of the expandable graphite B1) into the screw extruder is effected at a point behind which—viewed in the conveying direction—the extruder screw comprises substantially no shearing elements, and thermoplastic molding materials which can be prepared by these processes, the use of said the

Abstract: A process for the salt-free coagulation of polymer dispersions in a rotor/stator assembly is disclosed. The rotor/stator assembly includes a casing, a rotor shaft rotatably mounted within the casing, a rotor having a conical surface affixed to the rotor shaft, and a stator affixed to the casing and concentrically associated with the rotor. The conical surface faces a surface of the stator to form an adjustable shear gap, which is surrounded by an annular space. A polymer dispersion is fed into the assembly and conveyed through the shear gap. During this conveyance, the polymer dispersion is precipitated at a predetermined shear rate and a predetermined shear deformation. The polymer dispersion is discharged from the assembly through an outlet neck, and the assembly is flushed with water using one or more ports formed in at least one of a pipeline coupled to the axial feed neck, the stator, and the casing.

Abstract: Processes for producing thermoplastic molding compositions, which comprise a) from 3 to 79% by weight of one or more (methyl)styrene-acrylonitrile copolymers, which have no maleic-anhydride-derived units, b) from 15 to 91% by weight of one or more polyamides, c) from 5 to 50% by weight of one or more rubbers, d) from 1 to 25% by weight of one or more compatibilizers, e) from 0 to 2% by weight of one or more low-molecular-weight compounds which comprise a dicarboxylic anhydride group, f) from 0 to 50% by weight of one or more fibrous or particulate fillers, and g) from 0 to 40% by weight of further additives, by producing a melt comprising components A, B, and C in a first step and subsequently incorporating D, Also, thermoplastic molding compositions obtainable by these processes, the use of these thermoplastic molding compositions, and moldings, fibers, and foils comprising these thermoplastic molding compositions.

Abstract: The present invention relates to thermoplastic molding materials comprising the following components: (A) at least one polyarylene ether, (B) at least one polyarylene sulfide, (C) optionally at least one functionalized polyarylene ether comprising carboxyl groups, (D) at least one fibrous or particulate filler and (E) optionally further additives and/or processing assistants, the ratio of the apparent viscosity of the component (A) to that of the component (B), determined at 350° C. and a shear rate of 1150 s?1, being from 2.5 to 3.7.

Abstract: The present invention relates to thermoplastic molding materials comprising the following components: (A) at least one polyarylene ether, (B) at least one polyarylene sulfide, (C) at least one functionalized polyarylene ether comprising carboxyl groups having a viscosity number according to DIN EN ISO 1628-1 of 45 to 65 ml/g measured in 1% strength by weight solution in N-methyl-2-pyrrolidone at 25° C., (D) at least one fibrous or particulate filler and (E) optionally further additives and/or processing assistants. In addition, the present invention relates to a process for the preparation of the thermoplastic molding materials according to the invention, the use thereof for the production of shaped articles and the use of functionalized polyarylene ethers comprising carboxyl groups having a viscosity number according to DIN EN ISO 1628-1 of 45 to 65 ml/g measured in 1% strength by weight solution in N-methyl-2-pyrrolidone at 25° C.

Abstract: Methods of producing and using pellets based on at least one thermoplastically processible polymer are described. The pellets comprise at least one water-soluble component. The process comprises melt-extruding the pellet and shaping the pellet in a coolant, which is a non-solvent for the polymer, where the kinematic viscosity of the coolant is <20 mm2/s, measured at 40° C.

Abstract: A shell-and-tube heat exchanger, for removing volatile substances from a polymer solution by degasification, includes a bundle of tubes arranged vertically and parallel to each other in a shell chamber through which a fluid heat-transfer medium flows. The upper end of each tube is fixed in an upper tube sheet and the lower end of each tube is fixed in a lower tube sheet, and the polymer solution flows through the tubes in the direction of gravity. One feature is that a multilayer woven wire fabric is attached to the top of the upper tube sheet. The finest meshed layer of the fabric has a mesh width of 50 ?m to 1000 ?m. The invention also relates to a method for removing volatile substances from a polymer solution by degasification in a shell-and-tube heat exchanger and use of the shell-and-tube heat exchanger.

Abstract: The present invention relates to thermoplastic molding compositions comprising the following components: (A) at least one polyarylene ether, (B) at least one hyperbranched polymer selected from hyperbranched polycarbonates and hyperbranched polyesters, (C) optionally at least one fibrous or particulate filler, and (D) optionally further additives and/or processing aids. The present invention further relates to a process for producing the thermoplastic molding compositions of the invention, to their use for producing moldings, fibers, foams, films, or membranes, and to the resultant moldings, fibers, foams, films, and membranes.

Abstract: The present invention relates to thermoplastic molding compositions comprising the following components: (A1) at least one polyarylene ether having an average of at most 0.5 phenolic end groups per polymer chain, (A2) optionally at least one polyarylene ether having an average of at least 1.5 phenolic end groups per polymer chain, (B) at least one polyarylene sulfide, (C) at least one hyperbranched polymer selected from hyperbranched polycarbonates and hyperbranched polyesters, (D) optionally at least one functionalized polyarylene ether comprising carboxy groups, (E) optionally at least one fibrous or particulate filler, and (F) optionally further additives and/or processing aids. The present invention further relates to a process for producing the thermoplastic molding compositions of the invention, to the use of these for producing moldings, fibers, foams, or films, and to the resultant moldings, fibers, foams, and films.