Carnegie Mellon University

Ngx, Inc.

Mei Li

Krzysztof A Matyjaszewski

Srikanth Raghunathan

Qiping Zhong

J&eacute;r&ocirc;me Gromada

In one embodiment the invention is a hydrophobic nano-talc composition that is the reaction product of nano-talc with an ammonium, pyridinium or phosponium salt. The composition is characterized by a carbon content of about 5 to about 25 wt %. The compositions are useful in preparing nano-talc/polymer composites. In another embodiment, the invention is a process for preparing a nano-talc composition of the invention.

Nano-talc with hydrophobic coating

The use of concurrent reverse and normal initiation processes in an ATRP enables the use of highly active catalysts under &ldquo;reverse ATRP&rdquo; conditions and leads to the synthesis of well-defined polymers with low molecular weight distributions while employing much lower levels of the transition metal in the system. This dual activation/initiating system allows use of active catalysts that are added to the reaction in an oxidatively stable form. The benefits of this dual initiating system can be attained in bulk, solution and multi-phase ATRP processes, including emulsions, miniemulsions and polymerization from surfaces.

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Mars, PA, United States of America

Mei Li