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OwnerYouqing Shen, Huadong Tang +1inventors
InventorsYouqing Shen, Huadong Tang, Maciej Radosz
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Disclosed are new, highly active and versatile atom transfer radical polymerization (ATRP) catalysts. These catalysts catalyze ATRP for acrylates, methacrylates, and styrenes at surprisingly low concentrations. These catalysts mediated ATRP at a catalyst/initiator molar ratio at 0.005 and produced polymers with well-controlled molecular weights and low polydispersities. ATRP occurred even at a catalyst/initiator molar ratio as low as 0.001 with metal concentration in the produced polymers as low as 6-8 ppm. Amine-containing compounds, such as triethylamine, can significantly increase the catalyst activity of theses catalysts. The amine compounds can also used to the terminal halogen groups such as Br and Cl in the polymers prepared by ATRP.
An atom transfer radical polymerization catalyst, comprising a complex of a transition metal halide and a tertiary amine ligand.
A method for increasing the catalyst activity for transition-metal catalyzed radical polymerization, comprising the step of adding amine-containing compounds to the reaction system.
A method for removing halogen groups from a polymer synthesized using transition-metal catalyzed radical polymerization, comprising the step of reacting the polymer with amine-containing compounds.
The method of claim 13, wherein the polymerization is of monomers selected from the group consisting of acrylates, methacrylates, and styrenes.
Dependencies are inferred from the claim text.