Abstract: A process can be used for production of trans-polyoctenamer-graphene composite material having a high filler content, from a trans-polyoctenamer and graphene material. The highly filled trans-polyoctenamer-graphene composite material is useful, for example, in the automotive sector, in heat exchangers, in housings, encapsulations, plain bearings, in 3-D printing heads for heat removal, injection moulded parts, electronics applications, hose systems, membranes, fuel cells, cable systems, indoor and sports apparel, EM protection, and orthopaedics.

Abstract: Nanoparticle compositions contain a graphene-based material. A preparation process involves providing several components and milling a mixture. The nanoparticle compositions can be used as a lubricant additive to improve tribological performance, in particular to improve anti-friction and anti-wear performance on metal parts. A corresponding lubricant composition contains these nanoparticle compositions.

Abstract: A method prepares hydridosilane oligomers, where the obtainable hydridosilane oligomers are useful. A method can also be used for preparing coating compositions and for preparing a silicon-containing layer.

Abstract: The invention relates to a process for production of expanded thermoplastic elastomer, said process comprising the steps of: (e) adding monomers and/or oligomers used for producing the thermoplastic elastomer with or without further starting materials into a first stage of a polymer-processing machine, (f) mixing the monomers and/or oligomers and also the optionally added further starting materials and reacting the monomers and/or oligomers to give a polymer melt in the first stage of the polymer-processing machine, (g) passing the polymer melt into a second stage of a polymer-processing machine and adding a physical blowing agent with or without further starting materials to obtain a polymer melt comprising a blowing agent, (h) molding the polymer melt comprising a blowing agent into an expanded thermoplastic elastomer.

Abstract: A process for production of expanded thermoplastic elastomer beads in the presence of a gaseous medium that surrounds thermoplastic elastomer beads. The process comprises a) an impregnating step, in which the gaseous medium has an impregnating temperature Ta, and the absolute pressure of the gaseous medium is greater than ambient pressure, the thermoplastic elastomer beads impregnated with a blowing agent, b) an expanding step, in which the thermoplastic elastomer beads expand as they are exposed to a pressure reduction at a first expanding temperature Tb, and c) optionally a fusing step, in which the expanded thermoplastic elastomer beads are fused together at a fusing temperature Tc to form at least one shaped part.

Abstract: A process for producing expanded pellets from a thermoplastic elastomer having an elongation at break of more than 100% measured to DIN EN ISO 527-2, comprising: (a) pressing a polymer melt comprising a blowing agent through a perforated disk (18) controlled to a temperature between 150° C. and 280° C. and into a pelletizing chamber (26), (b) using a cutting device (20) to comminute the polymer melt pressed through the perforated disk (18) into individual expanding pellets, (c) discharging the pellets from the pelletizing chamber (26) using a liquid stream (36), wherein the blowing agent comprises CO2 and/or N2 and the amount of blowing agent in the polymer melt is from 0.5 to 2.5 wt %, the pelletizing chamber (26) is traversed by a stream of liquid at a temperature between 5° C. and 90° C. and the pressure of 0.1 bar to 20 bar above ambient pressure such that the pellets are expanded in the pressurized liquid by the blowing agent, producing expanded pellets having an uninterrupted skin.

Abstract: The invention relates to a process for production of expanded pellets from a polymer melt comprising a blowing agent, said process comprising the steps of: a) pressing the polymer melt comprising a blowing agent through a perforated disk controlled to a temperature between 150° C. and 280° C. and into a pelletizing chamber, b) using a cutting device to comminute the polymer melt pressed through the temperature-controlled perforated disk into individual expanding pellets, c) discharging the pellets from the pelletizing chamber using a liquid stream, wherein the blowing agent comprises CO2 or N2 or a combination of CO2 and N2 and the pelletizing chamber is traversed by a stream of liquid which is controlled to a temperature between 10° C. and 60° C. and the pressure of which is from 0.

Abstract: A process for production of expanded thermoplastic elastomer beads in the presence of a gaseous medium that surrounds thermoplastic elastomer beads. The process comprises a) an impregnating step, in which the gaseous medium has an impregnating temperature Ta, and the absolute pressure of the gaseous medium is greater than ambient pressure, the thermoplastic elastomer beads impregnated with a blowing agent, b) an expanding step, in which the thermoplastic elastomer beads expand as they are exposed to a pressure reduction at a first expanding temperature Tb, and c) optionally a fusing step, in which the expanded thermoplastic elastomer beads are fused together at a fusing temperature Tc to form at least one shaped part.

Abstract: The invention relates to a process for production of expanded thermoplastic elastomer, said process comprising the steps of: (e) adding monomers and/or oligomers used for producing the thermoplastic elastomer with or without further starting materials into a first stage of a polymer-processing machine, (f) mixing the monomers and/or oligomers and also the optionally added further starting materials and reacting the monomers and/or oligomers to give a polymer melt in the first stage of the polymer-processing machine, (g) passing the polymer melt into a second stage of a polymer-processing machine and adding a physical blowing agent with or without further starting materials to obtain a polymer melt comprising a blowing agent, (h) molding the polymer melt comprising a blowing agent into an expanded thermoplastic elastomer.

Abstract: The invention relates to a process for production of expanded pellets from a thermoplastic elastomer having an elongation at break of more than 100% measured to DIN EN 150 527-2, said process comprising the steps of: (a) pressing a polymer melt comprising a blowing agent through a perforated disk (18) controlled to a temperature between 150° C. and 280° C. and into a pelletizing chamber (26), (b) using a cutting device (20) to comminute the polymer melt pressed through the perforated disk (18) into individual expanding pellets, (c) discharging the pellets from the pelletizing chamber (26) using a liquid stream (36), wherein the blowing agent comprises CO2 or N2 or a combination of CO2 and N2 and the amount of blowing agent in the polymer melt comprising a blowing agent lies in the range from 0.5 to 2.5 wt % and wherein the pelletizing chamber (26) is traversed by a stream of liquid which is controlled to a temperature between 5° C. and 90° C. and the pressure of which is from 0.

Abstract: The invention relates to a process for production of expanded pellets from a polymer melt comprising a blowing agent, said process comprising the steps of: a) pressing the polymer melt comprising a blowing agent through a perforated disk controlled to a temperature between 150° C. and 280° C. and into a pelletizing chamber, b) using a cutting device to comminute the polymer melt pressed through the temperature-controlled perforated disk into individual expanding pellets, c) discharging the pellets from the pelletizing chamber using a liquid stream, wherein the blowing agent comprises CO2 or N2 or a combination of CO2 and N2 and the pelletizing chamber is traversed by a stream of liquid which is controlled to a temperature between 10° C. and 60° C. and the pressure of which is from 0.

Abstract: The invention is directed to extruded foam based on thermoplastic polymers. The foam contains at least one styrene copolymer which contains copolymerized maleic anhydride units or copolymerized maleimide units, and optionally styrene-acrylonitrile copolymers (SAN), and thermoplastic polymers and at least one halogen-containing polymer as flame retardant, and at least one flame retardant synergist selected from antimony trioxide and dicumyl. The invention also relates to a process for producing the foam with introducing carbon dioxide as blowing agent, and acetone as coblowing agent; into the polymer melt in order to form a foamable melt, and extruding the foamable melt into a region of relatively low pressure with foaming to give the extruded foam. The invention also relates to the use of said foam as insulation material and as structural foam.