E.i. Dupont De Nemours and Company

Other

Howard Zakheim

Markus Zahn

James D Goldschneider

Charles L Hoffmeyer

Peter M Clinton

Christopher A Kasmer

Harry J Spinelli

Michael Stephen Wolfe

Tristan Williams

Alexander K Sorser

Jiang Hong

A process for preparing dispersions of particles, especially aqueous dispersions is described. The process relates to a dispersion process where a polar solvent is added during the dispersion process such that the hydrogen bonding solubility parameter component, &#x3b4;, of the initial dispersion mixture increases at least 1.5 units. When the polar solvent added is water the dispersion process is called a Solvent-to-Water Process.

Method of preparing dispersions

This invention relates to the preparation of particle dispersions in a media mill using plastic, substantially cubic media to effect particle size reduction and/or dispersion of the particles.

Media mill process

A process of media milling employing a mill having a magnetic circuit of magnetic impellers (11) on a shaft (12), magnetized media, and a magnetizable outer shell (10).

Process of magnetic media milling

Media mill (1) having a magnetic circuit of magnetic impellers (11) on a shaft (12), magnetized media, and a magnetizable outer shell (10) which provides improved efficiency. The impellers (43) are magnetized by being sandwiched between at least two permanent magnets (45) in or on the shaft (42), which magnets have the same polar charge facing each other.

Process and apparatus for magnetic media milling

Media mill having a magnetic circuit of magnetic impellers on a shaft, magnetized media, and a magnetizable outer shell which provides improved efficiency.

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Bala Cynwyd, PA, United States of America

Howard Zakheim