Abstract: The invention relates to polymer compositions that contain a thermoplastic molding compound A, at least one reinforcing fiber B and at least one inorganic filler material C, the polymer composition having excellent aesthetic quality after thermoplastic processing. The invention also relates to a process for preparing the claimed composition and to uses thereof.

Abstract: The thermoplastic ABS molding composition comprises at least one thermoplastic copolymer matrix A, at least one ABS-copolymer B, optionally one or more polymers C, and one or more additives D, wherein, in the thermoplastic ABS molding composition, in particular after thermoplastic processing by extrusion, thermoforming and/or injection molding, the grafted rubber of component B is present in form of small particles.

Abstract: The invention proposes a linear vinylaromatic diene block copolymer (A) and polymer compositions comprising such SBC for the production of films having organoleptically improved, low film-blocking properties. Block copolymer (A) has sharp block transitions and a molecular weight Mn of at least 140,000 g/mol, wherein the proportion of a soft phase built from diene is from 15 to 35 vol.-%, and which soft phase-embedded in a vinylaromatic hard phase—has a cylindrical morphology.

Abstract: Polyacrylate graft rubber copolymer B and an impact modified thermoplastic molding composition thereof, where the graft copolymer B is composed of: B1: 50 to 70 wt.-% crosslinked acrylate polymer graft base B1 B2: 30 to 50 wt.-% graft shell B2 comprising a first layer B21 of vinylaromatic monomers, and a second layer B22 of vinylaromatic monomers B21-1 and nitrile monomers B22-2: wherein the particle diameter dw of the graft base BI is 255 to 290 nm; the fraction of B21 is 10 to 26 wt.-%; and the amount of B22-2, is 20 to 30 wt.-%.

Abstract: The present invention relates to a thermoplastic impact resistant copolymer composition having an increased luminous transmittance in relation to conventional impact resistant compositions, a process for its preparation and shaped articles made therefrom. The composition comprises 25 to 45% by weight of at least one acrylate-based graft copolymer and 25 to 75% by weight of at least one random copolymer of alkyl (meth) acrylate and vinylaromatic monomers.

Abstract: The invention is directed to a process for producing a ABS composition comprising 30-80 wt.-% of copolymer A, 19.99-60 wt.-% of ABS-copolymer B, 0-40 wt.-% of polymer C and 0.01-20 wt.-% of additives D, having the steps: a) mixing the components A, B and D and optionally C, by using an extruder comprising: a first feeding zone FZ1, a preheating zone PZ, a mechanical dewatering zone DZ, in which component B is mechanically dewatered, and wherein: the mechanical dewatering zone DZ comprises at least one dewatering aperture, in particular for liquid water; in a second feeding zone FZ2, at least part of component A and optionally part of component D are fed, preferably in melt and/or solid form, to the ex-truder, in a degassing zone DG component A and/or component B are degassed, and b) removing the ABS molding composition from a discharge zone CZ of the extruder.

Abstract: The invention relates to a method for producing styrene monomers by the depolymerisation of polystyrene in the presence of foreign polymers, such as polyolefins. Said method comprises the following steps: a) introducing a polymer composition (A) containing: I) 10 to 99.5% by weight, based on the polymer composition (A), of polystyrene (I); and II) 0.1 to 89.9% by weight of polyolefin (II); and/or III) 0.1 to 4.9% by weight of acrylonitrile-based polymer (III); and/or IV) 0.1 to 4.9% by weight of polyester (IV), into the reaction zone (R) of a pyrolysis reactor (P); b) thermal cracking the polystyrene contained in the polymer composition (A) in the reaction zone (R) of the pyrolysis reactor (P) at a temperature of between 400-1000° C., c) removing the product mixture (G) obtained from the reaction zone (R), d) cooling of the product mixture (G), and e) separating the styrene monomers from the further components.

Abstract: The invention relates to a process for the preparation of styrene monomers by depolymerising polystyrene, to a device for carrying out the process and to the use of a fluidised bed reactor for the depolymerisation of polystyrene. Said process comprising the following steps: a) feeding a polymer composition (A) containing 60 to 99.9 wt. polystyrene, based on the total weight of the polymer composition (A), into the reaction zone (R) of a pyrolysis reactor (P); b) thermally cracking the polystyrene contained in the polymer composition (A) in the reaction zone (R) of the pyrolysis reactor (P) at a temperature of between 400° C. to 1000° C.

Abstract: Weather resistant thermoplastic ASA compositions comprising (A): 20 to 80 wt.-% of a polymer mixture (A) consisting of: 35 to 65 wt.-% graft copolymer GR1 (D50 of 55 to 170 nm), composed of: 40 to 80 wt.-% cross-linked C1 to C8 alkyl acrylate graft base G11 and 20 to 60 wt.-% SAN-copolymer graft shell G12; and 65 to 35 wt.-% SAN copolymer S1 (MVR 50 to 70 ml/10 min); (B): 5 to 35 wt.-% polymer mixture (B) consisting of: 35 to 65 wt.-% graft copolymer GR2 (D50 of 410 to 1000 nm), composed of: 40 to 80 wt.-% cross-linked C1 to C8 alkyl acrylate graft base G21 and 20 to 60 wt.-% SAN-copolymer graft shell G22; and 65 to 35 wt.-% SAN copolymer S2 (MVR 11 to 25 ml/10 min); (C): 10 to 40 wt.-% of at least one SAN copolymer (C) (MVR 11 to 70 ml/10 min); (D): 1 to 15 wt.-% EVA copolymer (D) (VA>25 wt.-%); are particularly useful e.g. in the automotive industry.

Abstract: A heat-sealable multilayer film comprising: a) 1% to 50% by weight of heat-sealable polymer layer (A), b) 1% to 99% by weight of polymer layer (C), and c) 0% to 95% by weight of polymer layer (B), with polymer layer (A) comprising: A1) 20% to 90% by weight of impact-resistant polystyrene and A2) 5% to 50% by weight of vinylaromatic-diene block copolymer; and polymer layer (B) comprising impact-resistant polystyrene, vinylaromatic-diene block copolymer, and/or mixtures of styrene homopolymers or vinylaromatic-diene graft copolymers with vinylaromatic-diene block copolymers; and polymer layer (C) having a melting temperature of ?170° C.; and polymer layer (A) comprising) i) 66% to 99% by volume of a vinylaromatic hard phase and ii) 1% to 34% by volume of a diene soft phase surrounded by the hard phase and taking the form of spheres/cylinders.

Abstract: A graft copolymer B composed of:5 B1: 45 to 70 wt.-% graftbase B1, obtainedby emulsion polymerization of: b11: 80 to 98.9 wt.-% Cl to C4-alkyl acrylate; b12: 1 to 19.9 wt.-% C9 to C22-alkyl(meth)acrylate; and b13: 0.1 to 10 wt.-% bi- or polyfunctional crosslinking monomer b13; B2: 30 to 55 wt.-% graft shell B2 obtained in presence of graft base B1 via emulsion 10 polymerization of: b21: 50 to 95 wt.-% vinylaromatic monomer b21, and b22: 5 to 50 wt.-% vinylcyan monomer b22; and thermoplastic molding compositions thereof can be used for applications in the automotive and construction industry.

Abstract: The invention is directed to a process for producing a ABS composition comprising 30-80 wt.-% of copolymer matrix A, 19.99-60 wt.-% of ABS-copolymer B, 0-40 wt.-% of polymer C and 0.01-20 wt.-% of additives D, having the steps: a) mixing the components A, B and D and optionally C, by using an extruder comprising: a first feeding zone FZ1, a mechanical dewatering zone DZ, in which component B is mechanically dewatered, and wherein: the mechanical dewatering zone DZ comprises at least one dewatering aperture, in particular for liquid water, wherein the mechanical dewatering DZ zone comprises one or more elements made of a stainless steel material; in a second feeding zone FZ2, at least part of component A and optionally part of component D are fed, preferably in melt and/or solid form, to the extruder, in a degassing zone DG component A and/or component B are degassed, and b) removing the ABS molding composition from a discharge zone CZ of the extruder.

Abstract: A thermoplastic acrylate-styrene-acrylonitrile (ASA) copolymer composition for the production of moldings. The composition comprises: 10-89.7% by weight of a copolymer A1 consisting of styrene and acrylonitrile, 10-89.7% by weight of at least one graft copolymer A2 having an average particle size of 80-800 nm, consisting of a rubber-like base substance having Tg<0° C. and at least one graft shell, 0.1-2% by weight of at least one sterically hindered amine B1, 0-2% by weight of at least one sterically hindered amine B2, 0-2% by weight of at least one UV-A absorber B3, 0.1-3% by weight of at least one carbon black component CB, and 0-5% by weight of one or more further additives C.

Abstract: The invention relates to an improved process for providing purified styrenic monomers, such as styrene, from styrene-containing polymer waste. Styrene-containing waste is depolymerized in a suitable reactor, and the depolymerization products are condensed and separated in a three-step distillation process.

Abstract: ABS molding composition with an improved surface quality comprising (A) 15 to 44.975 wt.-% graft copolymer (A)-consisting of 15 to 60 wt.-% graft sheath (A2) and 40 to 85 wt.-% agglomerated butadiene rubber latex (A1)-obtained by emulsion polymerization of styrene and acrylonitrile in the presence of rubber latex (A1) (D50 of 150 to 800 nm). (B) 55 to 84.975 wt.-% copolymer (B) of styrene and acrylonitrile having a molar mass Mw of 85.000 to 190,000 g/mol: (C) 0.015 to 0.40 wt.-% vinylidene fluoride copolymer (C): and (D) 0.01 to 5 wt.-% further additive/processing aid (D) different from (C): can be used in painting or (electro)plating applications of thermoplastics.

Abstract: The invention relates to a process for producing a fiber-reinforced composite material (organosheet) containing at least one thermoplastic molding compound, at least one continuous reinforcing fiber layer and at least one inorganic filler material. According to the invention, at least one sheet material consisting of continuous reinforcing fibers is embedded in a matrix composition comprising at least one thermoplastic molding compound, the thermoplastic molding compound including at least one thermoplastic polymer and optionally at least one polarity-functionalized polymer that contains repeat units of at least one functional monomer. The invention also relates to the composite materials produced according to the claimed method.

Abstract: A process for producing styrene monomers from styrene oligomers comprises the following steps: a) providing a composition (A) comprising at least one type of styrene oligomer, wherein the composition (A) comprises at least 15 wt.-% of styrene dimers and/or styrene trimers; b) providing a depolymerization reactor (R) with a reaction zone (Z); c) feeding the composition (A) into the reaction zone (Z) of the reactor (R); d) depolymerizing the at least one type of styrene oligomer in the reaction zone (Z) to obtain a composition (B), comprising styrene monomers; e) removing the composition (B) from the reaction zone (Z); and f) isolating the styrene monomers from the composition (B); wherein the temperature (T) inside the reaction zone (Z) is above 500° C. to below 800° C. and the average residence time (tA) of the composition (A) in the reaction zone (Z) is greater than 0.01 s and less than 60 s.

Abstract: The invention relates to composite materials (organosheets) containing a thermoplastic molding compound, at least one continuous reinforcing fiber layer and at least one inorganic filler material. According to the invention, a sheet material consisting of continuous reinforcing fibers in a matrix composition comprising the molding compound is used, the thermoplastic molding compound containing at least one polyolefin, and optionally at least one further, polarity-functionalized polymer. The invention also relates to a process for produci2023ng the claimed composite material and to uses thereof.

Abstract: The invention relates to a method of producing styrene monomers by depolymerization (breakdown) of a styrene-copolymer-containing polymer mass, a device for carrying out the method, the use of a styrene copolymer for producing styrene monomers by thermal depolymerization and the use of a styrene copolymer as an additive in the thermal depolymerization of polystyrene. The polymer mass contains I) 10 to 100 wt %, relative to the total weight of the polymer mass (A), of a styrene copolymer (I), comprising: Ia) 10 to 99 wt %, relative to the styrene copolymer (I), of repeating units (Ia) that originate from styrene; and Ib) 1 to 90 wt %, relative to the styrene copolymer (I), of repeating units (Ib) that originate from a monomer the homopolymers of which have a ceiling temperature of below 350° C.; and II) optionally 0 to 90 wt % polystyrene (II).

Abstract: Thermoplastic elastomer compositions can be use for medical applications, Comprising: a) 97.1 to 90.9 wt.-% star-shaped block copolymer A with identical arms of the structure [S1-(S/B)k-(S/B)I-(S/B)m-S2]n-X, where S1 and S2 are vinylaromatic hard polymer and S/B are soft random vinylaromatic/diene copolymer blocks; X is a coupling center; and b) 2.9 to 9.1 wt.-% plasticizer B.