Process for decolorizing aqueous sugar solutions via adsorbent resins, and desorption of color bodies from the adsorbent resins
AssigneeThe Dow Chemical Company
InventorsRichard T. Stringfield, H. Robert Goltz, Seth I. Norman, Upen J. Bharwada, Robert L. LaBrie
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Abstract
A process for decolorizing an aqueous sugar solution by contacting the solution with an absorbent resin, wherein the adsorbent resin is a macroporous copolymer being post-crosslinked in a swollen state in the presence of a Friedel-Crafts catalyst and functionalized with hydrophilic groups prior to contact with the aqueous sugar solution.
Claims33
A process for decolorizing an aqueous sugar solution containing color bodies, comprising the step of contacting an aqueous sugar solution with an effective amount of an adsorbent resin so as to adsorb color bodies from said aqueous sugar solution onto said adsorbent resin, wherein said adsorbent resin is made from a macroporous copolymer of a monovinyl aromatic monomer and a crosslinking monomer, where the macroporous copolymer has been post-crosslinked in the swollen state in the presence of a Friedel-Crafts catalyst and functionalized with hydrophilic groups.
Dependencies are inferred from the claim text.