Keith Eugene Roberson

US Patent:

45855838, Apr 29, 1986

Filed:

May 24, 1982

Appl. No.:

6/380963

Inventors:

Keith Roberson - Freeland MI
Don L. Stevens - Sanford MI
Harold E. Filter - Midland MI

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

G21F 928
G21F 934

US Classification:

252628

Abstract:

A method is disclosed for encapsulating and solidifying spent ion exchange beads contained in a container to form an ion exchange bed with a solidification resin without the necessity for applying shear in the bed by an external force such as by a mixing impeller. A solidification resin is flowed through the ion exchange bed by plug flow to intermix with and encapsulate each ion exchange bead therein. The resin is cured to form a uniform, solidified monolith of said ion exchange beads in said container. When the ion exchange bed contains free water, the process also effects the removal of substantial portions of the free water and also emulsifies and solidifies free water remaining in the bed.

US Patent:

44003137, Aug 23, 1983

Filed:

Jun 30, 1980

Appl. No.:

6/164424

Inventors:

Keith Roberson - Freeland MI
Harold E. Filter - Midland MI

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

G21F 916

US Classification:

252628

Abstract:

An improvement in the process of encapsulating waste materials in aqueous liquid or finely divided, dry solid form, in liquid thermosettable resins of the group consisting of vinyl ester resins, unsaturated polyester resins, and mixtures thereof, which comprises increasing the amount of waste material incorporated in a given amount of resin by adding thereto a water-soluble polymeric substance containing a carbon chain having a plurality of --COOH groups or derivatives thereof.