Some New Type Catalysts Consisting of Organometallic Compounds for Stereospecific Polymerization of Methyl Methacrylate

detection of volatile compounds of medicinal plants with some nano-sorbents using modified or new methodologies and investigation of antioxidant activity of their methanolic extracts

in this work, a novel and fast method for direct analysis of volatile compounds (davc) of medicinal plants has been developed by holding a filament from different parts of a plant in the gc injection port. the extraction and analysis of volatile components of a small amount of plant were carried out in one-step without any sample preparation. after optimization of temperature, extraction time a...

New Cobalt-Mediated Radical Polymerization (CMRP) of Methyl Methacrylate Initiated by Two Single-Component Dinuclear β-Diketone Cobalt (II) Catalysts

Two dinuclear cobalt complexes based on bis-diketonate ligands (ligand 1: 3,3'-(1,3-phenylene)bis(1-phenylpropane-1,3-dione); ligand 2: 3,3'-(1,4-phenylene)bis(1-phenylpropane-1,3-dione)) were successfully synthesized. The two neutral catalysts all showed satisfactory activities in the cobalt-mediated radical polymerization (CMRP) of methyl methacrylate (MMA) with the common initiator of azodii...

Highly trans-stereospecific Isoprene Polymerization by Neodymium Borohydrido Catalysts

Some Biological Applications of Organometallic Compounds.

Biological Applications of Organometallic for Aeronautics........................................................................ Compounds: PROFESSOR HENRY GILMAN ........................ 47 Special Articles: The Motions of the Stars: PROFESSOR EVERETT I. Localization of Lithium in Tumor Tissue as a YOWELL ....................................... 50 Basis for Slow Neutron Therapy: DR. PAUL A. O...

Kinetics of Emulsifier-Free Emulsion Polymerization of Methyl Methacrylate

The influences of polymerization temperature, initiator and monomer concentrations, ionic strength of the aqueous phase, as well as ethylene glycol dimethacrylate (EGDM) comonomer, on the kinetics of the emulsifier-free emulsion polymerization of methyl methacrylate (MMA) and on the properties of the resulting poly(methy1 methacrylate) (PMMA) lattices were studied. The polymerizations were carr...