Highly active catalyst for atom transfer radical polymerization

Details Highly active catalyst for atom transfer radical polymerization Highly active catalyst for atom transfer radical polymerization

2011-08-09

2011-08-09

Harlan, Robert D. (Department: 1762)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Organic compound containing

C502S162000, C502S167000

Reexamination Certificate

active

07994087

ABSTRACT:
A class of catalysts with unusually high activity for polymerizing vinyl monomers such as acrylates, methacrylates and styrene is described. The catalysts consists of a metal halide such as CuBr and FeBr2ligated with multidentate amine-based ligands, for example N,N,N′,N′-tetra[(2-pyridal)methyl]ethylenediamine, and additives. The additives, which are tertiary amine compounds, can greatly increase the catalytic activity. The complex is capable of catalyzing a living polymerization reaction at a concentration of the complex below about 0.1 mol %.

REFERENCES:
patent: 6538091 (2003-03-01), Matyjaszewski et al.

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