Ddp Specialty Electronic Materials Us, LLC

Ddp Specialty Electronic Materials US 8, LLC

Other

The Dow Chemical Company

Dow Global Technolgoies LLC

James A Jagodzinski

William J Harris

John David Finch

William I Harris

Daryl John Gisch

Charles E Reineke

Marvin H Tegen

David C McDonald

Dennis A Keeley

Harvey S Fink

Dennis Keeley

David Mcdonald

Provided is a collection of polymer beads, wherein the volume distribution expressed as a function of bead diameter comprises

Controlled particle size distribution

Provided is a method of making a collection of polymer beads comprising

The invention pertains to a guard assembly for securement to a wheeled base. The guard assembly comprises a central support, a plurality of wheel guards positioned in an array around the central support, a plurality of struts, and a plurality of support struts. The struts are connected to and extend between a respective pair of the adjacent wheel guards in the array. Each of the support struts are connected to and extend between the central support and a respective one of the struts. The invention also envelops a method of retrofitting an existing wheeled base with the guard assembly.

Guard for wheeled base

The invention generally relates to amination reactions and amination reaction products, and particularly to methods for aminating vinyl aromatic polymers utilizing tertiary amines. In one embodiment, the invention includes conducting an amination reaction by combining a tertiary amine and a vinyl aromatic polymer comprising benzyl chloride groups to form a reaction mixture and maintaining the pH of the reaction mixture within a designated range. In another embodiment, the invention includes an aminated vinyl aromatic polymer. In yet another embodiment, the invention includes an ion exchange resin including quaternary ammonium functionality. The invention is useful in preparing ion exchange resins suitable for a variety of applications such as the removal of perchlorate ions from water sources and recovery of gold cyanide from mining leach solutions.

Amination of vinyl aromatic polymers with tertiary amines

A process for the separation of water from water-miscible organic compounds, comprising contacting a mixture of water and an organic compound against one side of a membrane comprising a salt of an anionic polysaccharide or blends thereof with a noncellulosic polyanion, and withdrawing at the other side of said membrane a mixture having a higher concentration of water.

Anionic polysaccharide separation membranes

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Midland, MI, United States of America

James A Jagodzinski