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US 5,175,363 AGranted
Method for purification of carboxylic acids and anhydrides
AssigneeEastman Kodak Company
InventorsJoseph R. Zoeller, Regina M. Moncier
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Abstract
Disclosed is a method for reducing olefinic impurities in solutions of carboxylic acids and/or anhydrides. The invention is especially useful for removing substantially all, i.e., greater than 90 percent of trace amounts of olefinic impurities.
Claims12
A method for removing trace amounts of mono-olefinic impurities in a solution comprising a C.sub.2 -C.sub.8 carboxylic acid and/or a C.sub.4 -C.sub.16 anhydride, which comprises contacting said solution with a strongly acidic resin.
Dependencies are inferred from the claim text.