Abstract: New halogenated butyl rubbers, which have a defined content of halogen, a defined content of non-halogenated double bonds and a defined content of antiagglomeration/vulcanization control agents, exhibit outstanding mechanical and physiological properties, so that they are suitable for the production of tires, particularly tire inner liners, tire sidewalls and tire treads, and for pharmaceutical rubber articles.

Abstract: The invention relates to a process for preparing pentafluoroethane (R 125) by reacting perchloroethylene with hydrogen fluoride in the gas phase over a chromium-containing catalyst, wherein the catalyst used comprises chromium and magnesium and is obtainable by reacting a water-soluble chromium(III) salt with magnesium hydroxide or magnesium oxide and, if desired, graphite in the presence of water, converting the reaction mixture into a paste, then drying the paste and treating it with hydrogen fluoride at temperatures of from 20.degree. to 500.degree. C., using such amounts of chromium(III) and magnesium salts and, if desired, graphite that the dried paste before treatment with hydrogen fluoride contains from 4.5 to 26% by weight of Cr, expressed as Cr.sub.2 O.sub.3, and at least 25% by weight of Mg, expressed as MgO, and, if desired, graphite.

Abstract: Molding compounds ofA) 5 to 95 parts by weight of a graft product of resin-forming monomers on a particulate silicone rubber having a total rubber content of from 30 to 90% by weight andB) 95 to 5 parts by weight of resin-forming monomers on a particulate EPDM rubber having a total rubber content of 10 to 50% by weight andC) 10 to 200 parts by weight (based on 100 parts by weight A+B) of a graft product of resin-forming monomers on a particulate acrylate rubber having a total rubber content of from 30 to 80% by weight.

Abstract: Process for rendering a plastic identifiable by adding 5 to 10,000 ppb of a fluorescent marker to the plastic during or after is manufacture.

Abstract: An aerobic resistance exercise garment includes leg or sleeve sections. Where sleeve sections are used a web is connected to the main portion of the garment. The garment and/or the sleeve and/or the web is made of a stretchable, elastic, resilient material. During the main exercise program where the arms of the user are being swung, resistance is encountered by the sleeves being connected to the garment when the arm swings away from the body causing the material to stretch. Where the garment includes leg portions a web may interconnect the leg portions to each other so as to offer resistance during the movement of the leg in an exercise program.

Abstract: An artificial nail includes an acrylic top layer mounted on a collagen support layer in the form of a mesh. The proximal end of the nail includes a plurality of anchor points, preferably three semi-circular anchor points. The proper size nail is selected by use of sizers. The toe or finger is prepared for implantation of the artificial nail by a puncturing tool which has a pattern of tines on its flat base.

Abstract: The invention relates to a process for the production of a chlorinated polymer having a chlorine content of from 30 to 70% by weight, which comprises chlorinating a polymer in a chlorinated hydrocarbon solvent, removing the solvent using steam and/or hot water in the presence of at least 1% by weight, based on the chlorinated polymer, of an alkoxylation product of 1 mole of a primary aliphatic alcohol containing at least 8 carbon atoms and at least 1.5 moles of propylene oxide and drying the precipitated chlorinated polymer.