Dow Global Technolgoies LLC

Shuji Maeda

Thomas Caldwell Young

Ha Q Pham

Clinton J Boriack

Robert M Drake

Edward Kronenberger

Andreas Tigges

Mark S Burkinshaw

Roland Werner

Paulo Alfonso Dos Santos Pereira

Joachim Drewing

Elwin G Collier

Joseph Weber

Takashi Ikeda

Ryosuke Tamai

Thomas C Young

Edward J Kronenberger

Andreas D Tigges

Use a centrifuge, especially a peeler centrifuge, that has a coarse salt particle layer deposited on its screen to effect recovery of an epoxy resin, especially a liquid epoxy resin, from a product slurry, which epoxy resin has a lower residual salt content than an epoxy resin recovered without use of the coarse salt particle layer.

Method of separating solid salt from epoxy resin solutions

Methods and apparatus for the recovery and purification of solid salt compositions from an organic liquid containing epoxy resin and at least one of epihalohydrin and solvent to obtain purified salt and/or brine compositions that may be useful in industrial processes.

Process and apparatus for purifying solid salt compositions

A process for the production of liquid epoxy resins, including: contacting a polyhydric phenol and an epihalohydrin in the presence of an ionic catalyst to form a halohydrin intermediate reaction product; concurrently: reacting a portion of the halohydrin intermediate reaction product with an alkali hydroxide to form a solid salt suspended in a liquid mixture including a dehydrohalogenated product and unreacted halohydrin intermediate, wherein the alkali hydroxide is used at less than a stoichiometric amount; and removing water and epihalohydrin as a vapor from the reacting mixture; separating the solid salt from the liquid mixture; reacting at least a portion of the unreacted halohydrin intermediate with an alkali hydroxide in the presence of water to form an organic mixture including an epoxy resin and unreacted epihalohydrin and an aqueous solution including a salt; separating the aqueous mixture from the organic mixture; and separating the unreacted epihalohydrin from the liquid epoxy resin.

Process for manufacturing liquid epoxy resins

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Lake Jackson, TX, United States of America

Shuji Maeda