The invention relates to use of a pipe for transporting chlorinated water, wherein the pipe is a biaxially oriented pipe made by a process comprising the steps of: a) forming a polymer composition comprising a polyolefin into a tube and b) stretching the tube of step a) in the axial direction and in the peripheral direction to obtain the biaxially oriented pipe.

(Co)polymer matrix composites including a porous (co)polymeric network; a nonvolatile diluent, and a multiplicity of thermally-conductive particles distributed within the (co)polymeric network; wherein the thermally-conductive particles are present in a range from 15 to 99 weight percent, based on the total weight of the (co)polymer matrix (including the thermally-conductive particles and the nonvolatile diluent). Optionally, the (co)polymer matrix composite volumetrically expands by at least 10% of its initial volume when exposed to a temperature of at least 135° C. Methods of making and using the (co)polymer matrix composites are also disclosed. The (co)polymer matrix composites are useful, for example, as heat dissipating or heat absorbing articles, as fillers, thermal interface materials, and thermal management materials, for example, in electronic devices, more particularly mobile handheld electronic devices, power supplies, and batteries.

According to the present invention, a microporous membrane contains a polyolefin resin and inorganic particles; the primary particle diameter of the inorganic particles is 100 nm or less; the content of the inorganic particles is 10-60% by mass or 10% by mass or more but less than 40% by mass based on the mass of the microporous membrane; and the retention time at 150° C. is less than 200 seconds or the retention time at 145° C. is more than 1 second but less than 300 seconds in the thermal behavior evaluation of the microporous membrane.

A resin composition for sliding member according to the present invention contains 40 to 80 mass% of a polyphenylene sulfide resin and as an additive, 15 to 40 mass% of a polytetrafluoroethylene resin, 2 to 20 mass% of an ultra-high molecular weight polyethylene resin, 0.1 to 5 mass% of a modified polyolefin resin, and 0.5 to 5 mass% of an amorphous polymer.

The present invention provides methods for making and using antibacterial polymeric materials loaded with additives, as well as antibacterial materials comprising additives. Certain additives or combinations of additives show unexpected combinatorial or synergistic antibacterial activity. The invention also provides medical devices comprised of antibacterial polymeric materials, and methods of making and using such devices, which can have unexpected combinatorial or synergistic antibacterial activity.

An assembly system includes a fixture configured to support a structure including at least one component to receive a malleable material, and a bladder system coupled to the fixture. The bladder system includes a hollowed frame having sidewalls that support a bladder disposed therein. The hollowed frame has an opening that exposes an outer portion of the bladder and is configured to guide the exposed outer portion externally from the hollowed frame toward a targeted area of the structure. In response to inflating the bladder, the outer portion of the bladder extends through the opening and applies a force against the at least one component so as to form a design feature element from the malleable material.

A composition for three-dimension (3D) printing, a method for 3D printing, and a resulting article having porous structure are provided. Such a composition includes from 50% to 100% o by weight of a base polymer comprising polyolefin (such as ultra-high molecular weight polyethylene), from 0% to 50% by weight of a glue polymer (such as HDPE or PP), and optionally additive. A composition can be applied in a layer, and the base polymer and the glue polymer each has a predetermined size or size distribution. The composition is sintered in a selected area to form a layer of a solid article, which has a predetermined pore size or pore size distribution. The predetermined particle size or size distribution for each of the base polymer and the glue polymer is determined through computer simulation based on the predetermined pore size or pore size distribution in the layer of the solid article.

The present invention relates to a reactor system for a multimodal polyethylene polymerization process, comprising; (a) 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 the use thereof as a container.

In an embodiment, a thermoplastic vulcanizate (TPV) composition is provided. The TPV composition includes a thermoplastic polyolefin; and an ethylene based copolymer rubber, wherein the ethylene based copolymer rubber has: a Mw of from 500,000 g/mol to 3,000,000 g/mol, a Mw/Mn of 4.0 or lower, and a g′.sub.vis of 0.90 or greater. In another embodiment, a TPV composition includes a thermoplastic phase and an ethylene-propylene-diene terpolymer, wherein the thermoplastic vulcanizate composition has: a hardness of from 20 Shore A to 60 Shore D; and a stress relaxation slope of −1 to −5 (1/min) as measured by an Elastocon stress relaxation instrument.

PP/UHMW-PE (Polypropylene-Ultrahigh-Molecular-Weight-Polyethylene) composition having: —a melting temperature Tm in the range of 125 to 150° C. (DSC, ISO 11357, Part 3), —an MFR2 of 0.15 to 0.60 g/10min (2.16 kg, 230° C., IS01133), —units derived from 1-hexene in an amount of at least 1.80 wt.-%, and—a XS according to IS116152 of less than 5.0 wt.-% all weight percentages with respect to the total PP/UHMW-PE composition.