A process is provided for producing an enriched carboxylic acid compositions produced by contacting composition comprising a carboxylic acid with an enrichment feed in an enrichment zone to form an enriched carboxylic acid composition. This invention also relates to a process and the resulting compositions...http://www.google.es/patents/US7897809?utm_source=gb-gplus-sharePatente US7897809 - Process to produce an enrichment feed
