The invention relates to compositions comprising composite materials comprised of discontinuous fibers and one or more polymers and/or oligomers. The invention relates to methods of making the same. The composite materials can be in the form of compositions, composite sheets, laminates, pellets, and/or shaped composite products.

A method for producing a tire sidewall rubber member according to an embodiment comprises: a first kneading step of preparing a first kneaded product by kneading a diene rubber, carbon black, a compound represented by formula (I) (wherein R.sup.1 and R.sup.2 represent a hydrogen atom, an alkyl group, an alkenyl group or an alkynyl group, and M.sup.+ is Na.sup.+, K.sup.+ or Li.sup.+), and zinc oxide; and a second kneading step of adding wax and/or stearic acid to the first kneaded product, followed by kneading. Thus, low heat generation properties are improved while suppressing the deterioration of tear resistance. ##STR00001##

A method for preparing a PEKK powder for use in SLS includes the steps of: providing a raw, non-powder PEKK material; heat treating the raw PEKK to evaporate at least substantially all of a liquid solvent in the raw PEKK, causing at least substantially all of the raw PEKK to be in the form of irregularly-shaped particles; cooling the raw PEKK; and grinding the raw PEKK to form a PEKK powder.

The presently disclosed subject matter relates to the field of electrospun epoxy fibers, a solution for producing the fibers and a system for electrospinning the fibers. This invention further relates to processes of producing the solution and the fibers. By dissolving epoxy in a dielectric solvent, suitable electrospinning conditions are achieved by controlling the degree of epoxy crosslinking in the solution. The fibers are captured on a net screen, with the positive electrode placed behind it. The resulting electrospun fibers exhibit superior mechanical properties in comparison with other epoxy fibers. This improvement in mechanical properties is, in part, due to anisotropic molecular rearrangement resulting from the strong stretching forces induced by electrospinning.

Biocompatible and implantable in the human body plastic material, for the obtainment of a device that can be implanted in the human body or a spacer device in order to treat a bone or a joint location, including an acrylic resin or polyethylene (PE) or low density polyethylene or high density polyethylene or ultra-high molecular weight polyethylene (UHMWPE) or polypropylene or polyamide or polyetheretherketone (PEEK) or a thermosetting resin or a mixture of the same, wherein the material can be molded and includes at least one pharmaceutical or medical substance; device implantable in the human body or spacer device for treating a bone or a joint location, obtained by the material above and method for manufacturing the material according to the present invention.

Method for the manufacture of a colored polymer composition comprising a polymer, a release agent and a colorant, the method comprising the steps of feeding a solid form of a release agent composition comprising said release agent and said colorant to a feed section of a melt mixing device, feeding said polymer to said melt mixing device and mixing said release agent composition and said polymer in said melt mixing device at a temperature above the melting temperature of said polymer, whereinsaid colorant is a pigment, or a dye which is soluble in said release agent, said polymer comprises or consists of polycarbonate, the release agent is selected from the group consisting of penta-erythritol tetra stearate, glycerol monostearate, glycerol tristearate and mixtures thereof.

A process for continuously preparing a polyolefin composition made from or containing a bimodal or multimodal polyolefin and one or more additives in an extruder device equipped with at least one hopper. The process includes the steps of supplying a bimodal or multimodal polyolefin in form of a polyolefin powder to the hopper; (a) measuring the flow rate of the polyolefin powder or (b) measuring the flow rate of the prepared polyolefin pellets; supplying one or more additives to the hopper; adjusting the flow rates of the additives supplied to the hopper in response to the measured flow rate of the polyolefin powder or adjusting the flow rate of the polyolefin powder in response to the measured flow rate of the polyolefin pellets; melting and homogenizing the polyolefin powder and additives within the extruder device; and pelletizing the molten polyolefin composition into the polyolefin pellets.

This disclosure relates to a novel type of high molecular weight polyethylene composition, and product made from said composition, with industrially useful properties, and the process of making said composition and product.

The present invention is a modified resin for a molded article obtained by modifying an ethylene/unsaturated carboxylic acid copolymer with guanidine carbonate, wherein a melt flow rate of the ethylene/unsaturated carboxylic acid copolymer is 20 (g/10 minutes) or more and 600 (g/10 minutes) or less.

Process for densification of a poly(arylene ether ketone) (PAEK) powder or of a mixture of poly(arylene ether ketone) (PAEK) powders, the process being mixing the powder or the mixture of powders, in a mixer equipped with a rotary stirrer including at least one blade, for a period of between 30 minutes and 120 minutes, preferably of between 30 and 60 minutes, at a blade-tip speed of between 30 m/s and 70 m/s, preferably of between 40 and 50 m/s.