A resin composition comprising 25 to 50% by mass of ultrahigh molecular weight polyethylene, 1 to 15% by mass of polyethylene, 35 to 65% by mass of a copolymer of 4-methyl-1-pentene with α-olefin having 3 or more carbon atoms, 0.1 to 2% by mass of a hydrogenated polymer of one or more polymers selected from the group consisting of polybutadiene, polyisoprene and a butadiene-isoprene copolymer, and 0.5 to 5% by mas of a propylene-based elastomer. The resin composition provides a separator suitable for a lithium-ion secondary battery.

A method for forming a nanocomposite coating on a substrate is described. The nanocomposite substrate comprises polyethylene, functionalized carbon nanotubes, and nanoclay. The method may use microparticles of UHMWPE with functionalized carbon nanotubes and clay nanoplatelets to form a powder mixture, which is then applied to a heated substrate to form the nanocomposite coating. The nanocomposite coating may have a Vickers hardness of 10.5-12.5 HV and a debonding strength of at least 25 N.

A cut resistant fabric and a method of manufacturing a cut resistant fiber is disclosed herein. The fabric comprises a Ultra High Molecular Weight Polyethylene (UHMWPE) material and a sheet shaped wollastonite filler. The sheet shaped wollastonite filler is treated with a coupling agent and mixed with the UHMWPE material. A thickness of the sheet shaped wollastonite filler is less than 10 micrometers (μm). The method comprises providing the sheet shaped wollastonite filler having a thickness of less than 10 μm and treating the sheet shaped wollastonite filler with a coupling agent at a first predefined temperature to obtain a uniform solution. The method further comprises mixing the uniform solution with a fiber solution comprising UHMWPE resin at a second predefined temperature.

The present invention relates to a reactor system for a multimodal polyethylene polymerization process, comprising: (a) first reactor; (b) a hydrogen removal unit arranged between the first reactor and a second reactor comprising at least one vessel connected with a depressurization equipment, preferably selected, from vacuum pump, compressor, blower, ejector or a combination thereof, the depressurization equipment allowing to adjust an operating pressure to a pressure in a range of 100-200 kPa (abs); (c) the second reactor; and (d) a third reactor and use thereof as a pipe.

A semicrystalline multiblock copolymer includes alternating blocks of semicrystalline isotactic polypropylene (iPP) and semicrystalline polyethylene (PE), having a block arrangement according to formula (I):
(iPP.sub.w).sub.p(PE.sub.x)(iPP.sub.y).sub.m(PE.sub.z).sub.n   (I),
wherein p is 0 or 1; m is 0 or 1; n is 0 or 1; the sum of p, m, and n is 1, 2, or 3; and the sum of w, x, y, and z is greater than or equal to 40 kg/mol, with the provisos that: when m and n are 0, the sum of w and x is greater than or equal to 140 kg/mol; and when p and n are 0, the sum of y and x is greater than or equal to 140 kg/mol. Related compositions and methods are also provided.

The present disclosure relates generally to the field of mammalian prosthetics, and more specifically to prostheses for use in total or partial joint replacement, and to a method of use of these prostheses in arthroplasty. Thus, disclosed is a prosthesis for use in hip arthroplasty that comprises an artificial femoral head that includes a head portion constructed totally or partially of a polymeric material, and a connector means designed to connect said head portion in a non-articulating manner to a femoral stem portion. The head portion may be made solely of solid polymeric material or of an outer shell of polymeric material connected in a non-articulating manner to an embedded core. The polymeric material is preferably selected from ultra-high molecular weight polyethylene (UHMWPE) or radiation treated UHMWPE having substantially no detectable free radicals. The embedded core comprises, for example, one or more of solid non-polymeric material (e.g., metallic, ceramic, or ceramic-on-metal material), a multiplicity of metallic spokes, a metallic scaffolding, and/or combinations thereof.

The present disclosure relates to a slip coating composition for glass run of a vehicle. More specifically, the present disclosure relates to a slip coating composition including: an olefin-based thermoplastic elastomer, polypropylene, and an ultra-high molecular weight polyethylene (UHMWPE) with a weight average molecular weight of 0.4×10.sup.6 to 1×10.sup.6 g/mol, and to a slip coating material formed of the composition, and according to the present disclosure, it is possible to improve a low friction coefficient, wear resistance, and color matching properties of the coating material.

A method of preparing a nanocomposite fiber comprising suspending carbon powder comprising graphene flakes in a carrier fluid. A solid polymer material is added to the carrier fluid having the carbon powder suspended therein to create a mixture. The mixture is heated and the solid polymer material is at least partially dissolved within the carrier fluid having the carbon powder suspended therein. The carrier fluid is removed from the mixture, forming the polymer into a fiber carrying the graphene flakes.

The disclosure relates to high-strength polyolefin composite fibers, which fibers have a fiber body comprising a composition consisting of polyolefin; 1-30 mass % of bioceramic particles having particle size D50 of 0.01-10 μm; at most 0.05 mass % of residual spin solvent; optionally 0-3 mass % of other additives; and wherein the sum of a)-d) is 100 mass %; and which fibers have bioceramic particles exposed at their surface, and show bioactivity. The composite fibers based on a composition of polyolefin with bioceramic particles mixed therein show particles being exposed at the fiber surface by techniques like AFM and XPS, and although apparently only a relatively small amount of bioceramic particles is exposed at the fiber surface, this appears sufficient for effective interaction with their environment and stimulating a positive biological response as demonstrated by in vitro cell studies.

The present disclosure also concerns a method of making the high-strength composite fibers via a gel spinning process, fibrous articles comprising said bioactive composite fibers. Further embodiments concern use of these fibrous articles as a component of a medical implant or as a medical implant, especially as permanent high-strength orthopedic implants for repairing bone fractures or torn ligaments or tendons. Other embodiments include medical devices or implants comprising said fibrous articles.

This invention relates to a thermoplastic elastomer composition comprising 5 to 30 parts by mass of ethylene-α-olefin-non-conjugated polyene copolymer (A), 20 to 40 parts by mass of crystalline olefin-based resin (B) having a density of 0.90 g/cm.sup.3 or more and 0.92 g/cm.sup.3 or less, 20 to 40 parts by mass of high-density polyethylene (C) having a density of 0.94 g/cm.sup.3 or more and 0.97 g/cm.sup.3 or less, 5 to 12 parts by mass of ethylene-α-olefin copolymer (D) consisting of ethylene and α-olefin having 3 to 12 carbon atoms, and 5 to 9 parts by mass of silicone compound (E) (with the total amount of (A), (B), (C), (D) and (E) being 100 parts by mass), and to an automotive glass run channel formed by the thermoplastic elastomer composition.