Sumitomo to produce novel Metallocene PP. (In Brief).Japan's Sumitomo Chemical Co., Ltd. intends to use a new, proprietary metallocene catalyst system in its solution process plant in Chiba, Japan. The catalyst reportedly produces a new type of olefin olefin (ō`ləfĭn) or olefin series: see alkene. olefin or alkene Any unsaturated hydrocarbon containing one or more pairs of carbon atoms linked by a double bond (see copolymer copolymer: see polymer. composed mainly of propylene propylene /pro·pyl·ene/ (pro´pi-len) a gaseous hydrocarbon, CH3CHdbondCH2. propylene glycol a colorless viscous liquid used as a humectant and solvent in pharmaceutical preparations. with other comonomers. These copolymers, which have a completely amorphous structure, reportedly provide a unique combination of softness, adhesion, and high-temperature resistance suitable for end uses such as plastic "leather," protective films, and replacement of soft PVC PVC: see polyvinyl chloride. PVC in full polyvinyl chloride Synthetic resin, an organic polymer made by treating vinyl chloride monomers with a peroxide. . |
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