Derivatives of novel carbon bridged cyclopentadienyl-dicarbollide complexes of titanium, zirconium and hafnium display a very high activity as ethylene polymerization catalysts in the absence of a cocatalyst. This invention relates to novel group 4 metallocene catalysts bearing linked cyclopentadien.....
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The present invention relates to a new method for the synthesis of triaroylbenzene by secondary amine and DMF-catalyzed cyclotrimerization of acetylenes. This method can be applied for the synthesis of new branched organic materials and polymers containing the triaroylbenzene moieties. The polymeriz.....
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The present invention relates to a microvalve having a valve plug, connecting legs, anchors and actuators, allowing the valve plug to move vertically to open or close the valve. The valve plug can contain magnetic materials, and be operated by an actuator.
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