Abstract: A scratch-resistant thermoplastic polymer composition (P) comprising 40 to 99.9 wt.-% of at least one styrene-based copolymer, 0.1 to 20 wt.-% of at least one inorganic metal compound nanoparticle, and optionally at least one polymeric compatibilizing agent, at least one modified polysiloxane compound, at least one colorant, dye or pigment, and/or at least one further additive has improved scratch properties.

Abstract: The invention is directed to a method for producing a thermoplastic molding composition comprising at least one styrene polymer and at least one lubricant, selected from fatty acids and fatty acids derivatives, wherein the method encompasses the preparation of a master batch polymer composition, comprising at least one styrene polymer having a melt flow rate (measured according to ASTMD1238, 200° C./5 kg) in the range of 2 to 10 g/10 min; and 10 to 40% by weight, based on the master batch polymer composition, of the lubricant. In particular the styrene polymer is selected from standard polystyrenes (general purpose polystyrene (GPPS)) and high impact polystyrenes(HIPS).

Abstract: Thermoplastic polymer compositions (P) comprising 90 to 99.9 wt.-% of at least one styrene-based copolymer, 0.1 to 10 wt.-% of at least one copolymer at least comprising repeating units derived from at least one ?-olefin monomer and at least one vinyl-aromatic monomer, at least one inorganic phosphate compound, at least one polyolefin wax and optionally at least one colorant, dye or pigment, and/or at least one further additive show improved properties with respect to residual gloss after abrasion combined with improved melt flow characteristics while heat resistance is not affected.

Abstract: Thermoplastic resin composition comprising: (a1) at least one styrene-acrylonitrile copolymer component A1, (a2) at least one acrylonitrile styrene acrylate graft copolymer A2 as impact modifier, (a3) optionally at least one thermoplastic polymer A3 other than components A1 and A2, (b) at least one pigment B, (c) at least one hindered amine UV light stabilizer C1 and at least one UV absorber C2 different from C1, and (d) optionally further polymer additives D, other than components B, C1, C2, and E, (e) at least one metal scavenger component E.

Abstract: The invention relates to a method for polymerizing acrylates using a reactor (50). Reaction heat produced in the reactor (50) is discharged via a boiling cooler (40) in that gaseous vapors produced in the reactor (50) are supplied to the boiling cooler (40), and condensed vapors are returned to the reactor (50) from the boiling cooler (40). At least one component containing acrylate is at least partly added via the boiling cooler (40) and reaches the reactor (50) via the boiling cooler (40). The invention additionally relates to a system for polymerizing an acrylate, comprising a reactor (50) and a boiling cooler (40) for discharging reaction heat produced in the reactor (50). The boiling cooler (40) has at least one filling opening (46) for supplying at least one component containing acrylate.

Abstract: Scratch-resistant thermoplastic polymer compositions (P) comprising 90 to 99.9 wt.-% of at least one styrene-based copolymer, 0.1 to 10 wt.-% of an aliphatic amide wax additive comprising at least one aliphatic amide wax composition having a melting point in the range of 80° C. to 115° C., and optionally at least one colorant, dye, pigment and/or further additive, have improved properties.

Abstract: The present invention relates to a thermoplastic polymer powder and to the use thereof as material for selective laser sintering (SLS). The polymer powder contains a partially crystalline polymer, an amorphous polymer and a compatibilizing agent, and optionally additional additives and/or auxiliary substances, wherein the partially crystalline polymer, the amorphous polymer and the compatibilizing agent are in the form of a polymer blend. The invention also relates to a method for producing the thermoplastic polymer powder and to a method of selective laser sintering (SLS).

Abstract: The invention relates to the use of molding materials for 3-D printing, containing components A, B1, B2, and C, wherein: A:5 to 100 wt % of at least one vinyl aromatic/diene block copolymer A, containing: a) 30 to 95 wt % of at least one vinyl aromatic and b) 5 to 70 wt % of at least one diene, B1:0 to 95 wt % of at least one polymer B1 selected from the group comprising standard polystyrene, high-impact polystyrene (HIPS), styrene/acrylonitrile copolymers, ?-methylstyrene/acrylonitrile copolymers, styrene/maleic anhydride copolymers, styrene/phenylmaleimide copolymers, styrene/methylmethacrylate copolymers, styrene/acrylonitrile/maleic anhydride copolymers, styrene/acrylonitrile/phenylmaleimide copolymers, methylstyrene/acrylonitrile/methylmethacrylate copolymers, ?-methylstyrene/acrylonitrile/t-butyl methacrylate copolymers, and styrene/acrylonitrile/t-butyl methacrylate copolymers, B2:0 to 60 wt % of one or more further polymers B2 selected from: polycarbonates, polyamides, poly(meth)acrylates, polyesters,

Abstract: The present invention relates to a polymer composition comprising at least one block copolymer and a specific amount of at least one oil component. The block copolymer, which is the polymeric matrix of the inventive composition, is built up from at least one vinyl aromatic monomer MA and at least one conjugated diene monomer MB, in particular the block copolymer is a styrene butadiene block copolymer (SBC).

Abstract: Thermoplastic elastomer compositions can be used for medical skin contact applications, comprising: a) 90.9 to 69.0 wt.-% star-shaped block copolymer A with 4 arms of the general structure [S1—(S/B)k—(S/B)I—(S/B)m—S2]n—X, where S1 and S2 are vinylaro-matic hard polymer and S/B are soft random vinylaromatic/diene copolymer blocks; X is a coupling center; and b) 9.1 to 31.0 wt.-% of a plasticizer B: b1) a mixture of mineral oil B1 and cyclohexane 1,2-dicarboxylic acid C8 to C10 dialkyl ester B2; or b2) a mixture of mineral oil B1 and vegetable oil B3.

Abstract: The invention relates to a process for producing thermoplastic molding materials based on acrylonitrile-styrene-acrylate copolymers (ASA) having improved surface properties, in particular an improved stability of surface quality during storage in a hot and humid environment and a reduced content of residual monomers. The invention further relates to the use of a fluidized bed dryer and/or a flow dryer in the production of thermoplastic ASA molding materials for improving surface quality and the use of a fluidized bed dryer and/or a flow dryer in the production of thermoplastic ASA molding materials for reducing the content of residual monomers. The invention further provides ASA molding materials producible by means of the process according to the invention and also moldings.

Abstract: Process for the preparation of styrenic polymers having an improved color stability by anionic polymerization wherein the obtained terminated polymer solution is fed to a dispersing device to which water is added, fed to a buffer vessel and then is impregnated in a static mixer by addition of further water, carbon dioxide and one or more stabilizers.

Abstract: The invention relates to a process for producing a foam molded part, wherein a foamable material S comprising a thermoplastic polymer matrix M and at least one foaming agent F is foamed by foam injection molding. The polymer matrix M is preferably based on at least one thermoplastic styrene copolymer, such as ABS and ASA, and wherein the at least one foaming agent F is selected from chemical foaming agents, releasing carbon dioxide, and physical foaming agents, being carbon dioxide or nitrogen.

Abstract: Thermoplastic molding composition scan be advantageously used in hydrofluoro olefin containing areas, comprising components A, B, C and, D: 10 to 35 wt.-% ABS graft rubber A obtained by emulsion polymerization, 50 to 75 wt.-% SAN copolymer B, 4 to 20 wt.-% copolymer C from ethylene and C1-C6-alkyl(meth)acrylate, and 4 to 20 wt.-% ABS graft rubber copolymer D obtained by mass polymerization.

Abstract: A thermoplastic molding composition can be employed for 3D printing if it comprises: A: 92.9 to 98.59 wt % of impact-modified polymer A, consisting of: 40 to 90 wt % of vinylaromatic copolymer a, 10 to 60 wt % of ABS graft copolymer b; B1: 1.2 to 3.5 wt % of amide or amide derivative of saturated higher fatty acid having 14 to 22 carbon atoms; B2: 0.2 to 0.6 wt % of salt of saturated higher fatty acid having 14 to 22 carbon atoms; and C: 0.01 to 3 wt % of auxiliaries C such as stabilizers, oxidation retarders, agents against heat and UV light decomposition.

Abstract: Thermally conductive polymer (TCP) resin compositions are described, comprising components (X) and (Y): 90 to 99.9% component (X) comprising components (I) and (II): 60 to 85% matrix polymer (I) comprising styrenic polymers (F) selected from: ABS resins, ASA resins, and elastomeric block copolymers of the structure (S—(B/S))n—S; 15 to 40% thermally conductive filler material (II) (D50 1 to 200 ???), consisting of a ceramic material and/or graphite; 0.1 to 10% chemical foaming agent (Y). Shaped articles made thereof can be used for automotive applications, as a heat sink for high performance electronics, LED sockets or electrical and electronic housings.

Abstract: Thermoplastic molding masses containing, with respect to the sum of the components A to D: a) 20 to 90 wt % of one or more styrene copolymers as component A, constructed from styrene and at least 30 wt % of acrylonitrile, b) 10 to 80 wt % of one or more impact-modified graft rubbers without olefinic double bond in the rubber phase as component B, constructed from graft base B1 and acrylonitrile-containing graft shell B2, c) 0 to 20 wt % of a polymer C different from the components A and B, and d) 0 to 15 wt % of additive D, wherein the difference in the acrylonitrile content of component A and graft shell B2 is at least 5 units and at most 10 units, have a residual monomer fraction of acrylonitrile of less than 100 ppm.

Abstract: Method for producing a thermoplastic moulding compound containing: up to 40 wt. % of a graft copolymer A, containing 50-70 wt. % graft base A1 from an acrylic ester polymer and 30-50 wt. % of a graft shell A2, and 0-90 wt. % of a hard matrix B, wherein the reaction for producing the graft copolymer A is carried out in the presence of 0.01 to 4 times the molar amount of sodium carbonate, relative to the molar amount of initiator, wherein the reaction for producing copolymer A is carried out in the presence of 0.1 to 1 wt. % of an emulsifier relative to the amount of the respective monomers used, and wherein during the polymerisation reaction, during the post-polymerisation and/or after the polymerisation reaction, water or an aqueous alkali solution are added to the reaction mixture for producing the graft copolymer A.

Abstract: The invention relates to graft copolymers—based on non-cross-linked acrylate soft phases from which styrenic monomers are grafted—with a defined micro-structure, having a high transparency, toughness and weather resistance (UV-stability), a process for their preparation and their use, and also to polymer blends comprising said graft copolymers and styrenic polymers, and shaped articles produced therefrom and their use.

Abstract: The invention relates to graft copolymers—based on non-cross-linked acrylate soft phases from which styrenic monomers are grafted—with a defined micro-structure, having a high transparency, toughness and weather resistance (UV-stability), a process for their preparation and their use, and also to polymer blends comprising said graft copolymers and styrenic polymers, and shaped articles produced therefrom and their use.