Abstract: Thermoplastic elastomer compositions, in particular derived from one or more styrenic block copolymers wherein at least one styrenic block copolymer comprises a controlled distribution copolymer block including a conjugated diene and a mono alkenyl arene, a plurality of biorenewable materials, preferably a softener and one or more synergistic additives such as a polar polymer; a synergistic block copolymer such as a relatively high molecular weight styrenic block copolymer; and/or filler. Numerous desirable articles can be formed from the compositions. Processes for preparing the compositions and articles are disclosed.

Abstract: Thermoplastic elastomer compositions, in particular derived from one or more styrenic block copolymers wherein at least one styrenic block copolymer comprises a controlled distribution copolymer block including a conjugated diene and a mono alkenyl arene, a plurality of biorenewable materials, preferably a softener and one or more synergistic additives such as a polar polymer; a synergistic block copolymer such as a relatively high molecular weight styrenic block copolymer; and/or filler. Numerous desirable articles can be formed from the compositions. Processes for preparing the compositions and articles are disclosed.

Abstract: The invention relates to a thermoplastic elastomer composition comprising a thermoplastic elastomer and a flame retardant, wherein the flame retardant comprises at least a compound selected from the group consisting of piperazine phosphate, piperazine pyrophosphate and piperazine polyphosphate, and a phosphoric acid compound.

Abstract: Thermoplastic elastomer compositions, in particular derived from one or more styrenic block copolymers, a plurality of biorenewable materials, preferably a softener and one or more synergistic additives such as a polar polymer; a synergistic block copolymer such as a relatively high molecular weight styrenic block copolymer; and/or filler. In one preferred embodiment, the styrenic block copolymer comprises a controlled distribution copolymer block including a conjugated diene and a mono alkenyl arene. Numerous desirable articles can be formed from the compositions. Processes for preparing the compositions and articles are disclosed.

Abstract: Thermoplastic elastomer compositions, in particular derived from one or more styrenic block copolymers wherein at least one styrenic block copolymer comprises a controlled distribution copolymer block including a conjugated diene and a mono alkenyl arene, a plurality of biorenewable materials, preferably a softener and one or more synergistic additives such as a polar polymer; a synergistic block copolymer such as a relatively high molecular weight styrenic block copolymer; and/or filler. Numerous desirable articles can be formed from the compositions. Processes for preparing the compositions and articles are disclosed.

Abstract: The invention relates to a thermoplastic elastomer composition comprising a thermoplastic elastomer and a flame retardant, wherein the flame retardant comprises at least a compound selected from the group consisting of piperazine phosphate, piperazine pyrophosphate and piperazine polyphosphate, and a phosphoric acid compound.

Abstract: Thermoplastic elastomer composition, comprising an thermoplastic polyolefin and an dynamically vulcanized elastomer comprising monomer units of ethylene, an ?-olefin and optionally one or more non-conjugated polyenes and oil, having an oil/elastomer ratio of at least 2/1, having a content of thermoplastic polyolefin of less than 10 wt. % relative to the total weight of the thermoplastic elastomer composition, granulate of the composition having the capability of flowing out of a cylinder, held in vertical position, within 120 seconds, after being kept in that cylinder under a pressure of 465 kg/m2, at a temperature of 50° C., for a period of 1 hour, that cylinder having an internal diameter of 95.3 millimeter (mm) and a length of 356 mm and being filled for a length of between 326 and 338 mm.

Abstract: The present invention relates to an article comprising a polymer substrate and a co-extruded polymer coating. The polymer substrate is for example manufactured from a thermoset rubber, a styrene based thermoplastic elastomer, an olefinic based thermoplastic elastomer or mixtures of these polymers. The co-extruded coating comprises an optical brightener for example a fluorescent agent. The co-extruded coating for example has a thickness smaller than 700 micrometer. The article is for example used in automotive applications, in building and construction applications, in packaging, in food applications, consumer applications, in medical applications or in wire and cable applications. The present invention also relates to the use of the articles of the present invention in automotive sealing systems.

Abstract: The present invention relates to a process for the preparation of a dynamically vulcanized thermoplastic elastomer comprising simultaneously mixing a thermoplastic polyolefin, a vulcanizable rubber and a curing agent in a co-rotating twin-screw extruder whereby the vulcanizable rubber is cured during mixing. The residence time in the extruder is less than 40 sec, the ratio of specific Energy (Espec)/residence time is at least 24 kW/kg and the ratio of the residence time/(Length/Diameter) is less than 0.60 sec. The invention further relates to the dynamically vulcanized thermoplastic elastomer obtainable by the process and to the use of the dynamically vulcanized thermoplastic elastomer in sealing systems, building profiles and extrusion applications.

Abstract: Thermoplastic elastomer composition, comprising an thermoplastic polyolefin and an dynamically vulcanized elastomer comprising monomer units of ethylene, an ?-olefin and optionally one or more non-conjugated polyenes and oil, having an oil/elastomer ratio of at least 2/1, having a content of thermoplastic polyolefin of less than 10 wt. % relative to the total weight of the thermoplastic elastomer composition, granulate of the composition having the capability of flowing out of a cylinder, held in vertical position, within 120 seconds, after being kept in that cylinder under a pressure of 465 kg/m2, at a temperature of 50° C., for a period of 1 hour, that cylinder having an internal diameter of 95.3 millimeter (mm) and a length of 356 mm and being filled for a length of between 326 and 338 mm.

Abstract: The present invention relates to a process for the preparation of a dynamically vulcanized thermoplastic elastomer comprising simultaneously mixing a thermoplastic polyolefin, a vulcanizable rubber and a curing agent in a co-rotating twin-screw extruder whereby the vulcanizable rubber is cured during mixing. The residence time in the extruder is less than 40 sec, the ratio of specific Energy (Espec)/residence time is at least 24 kW/kg and the ratio of the residence time/(Length/diameter) is less than 0.60 sec. The invention further relates to the dynamically vulcanized thermoplastic elastomer obtainable by the process and to the use of the dynamically vulcanized thermoplastic elastomer in sealing systems, building profiles and extrusion applications.

Abstract: Process for the preparation of a thermoplastic elastomer by melt mixing a partially vulcanized rubber concentrate, a thermoplastic polymer and/or additives, optionally oil and a curing agent. The partially vulcanized rubber concentrate is prepared by melt mixing at least one elastomer and optionally oil with a thermoplastic polymer and a curing agent. The elastomer may be EPDM or EPM. The thermoplastic polymer may be chosen from a thermoplastic polyolefine. Usefull curing agents are for example sulfur, sulfurous compounds, metal oxides, maleimides, phenol resins or peroxides.

Abstract: Foamed thermoplastic polyolefin elastomer is formed by heating a foamable thermoplastic polyolefin elastomer-containing polymeric composition containing each of a first water-releasing blowing agent which is at least one of metal hydroxide and water hydrate of a salt of a metal of Group 1 or Group 2 of the Periodic Table and a second blowing agent which is neither a metal hydroxide nor a water hydrate of a salt of a metal of Group 1 or Group 2 of the Periodic Table, to a temperature above the melting point of the polyolefin elastomer. The second blowing agent may be a chemical blowing agent and may release, water, a mixture of water and carbon dioxide or another gas, including carbon monoxide, carbon dioxide, and nitrogen.

Abstract: The invention relates to a process for preparing a foamed polymeric article, comprising heating a polymeric composition, said composition comprising a thermoplastic polyolefin elastomer, a first blowing agent in the form of a water releasing chemical compound, and a second, different blowing agent, to a temperature at which the first blowing agent releases water, to foam said thermoplastic polyolefin elastomer, said temperature being above the melting point of the thermoplastic polyolefin elastomer, characterized in that said first blowing agent comprises a metal hydroxide, a metal salt of Group 1 or 2 of the Periodic Table containing hydrate water and mixtures thereof and said second blowing agent not being a metal hydroxide or a Group 1 or 2 of the Periodic Table metal salt containing hydrate water.

Abstract: The invention relates to an adhesive thermoplastic elastomer composition comprising either a blend of a thermoplastic resin and a rubber, or a thermoplastic elastomeric styrene based blockcopolymer. The invention resides in that the composition also comprises an adhesion promotor in the form of a reaction product of a functionalized rubber and a polyamide. The invention also relates to articles comprising a combination of a substrate and such a composition.

Abstract: The invention relates to a process for preparing a foamed thermoplastic elastomeric article,comprising the following steps: heating a mixture comprising a thermoplastic elastomer selected from the group comprising styrene based thermoplastic elastomers and thermoplastic polyolefin elastomers, and an effective amount of a water releasing chemical compound, to a temperature at which the water releasing chemical compound releases water, which is above the melting point of the thermoplastic elastomer, and releasing the resulting heated mixture to atmospheric conditions. The invention also relates to a foamable polymeric composition as well as to a foamed thermoplastic elastomeric article.

Abstract: The invention relates to a foamable polymeric composition, comprising a thermoplastic elastomer on the basis of a polyolefin and a rubber; the invention is characterized in that the polyolefin is a polypropylene homo- or copolymer having: a weight average molecular weight, Mw, of at least 2*105, and an elongational viscosity (measured at a temperature of 170° C., at a rate of elongation of 0.03 s−1 and at a time of 10 s), EV(170/10), of at least 1.4*105 Pa.s. The invention relates also to a process for foaming a polymeric composition, as well as to a foamed thermoplastic article.