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Process for production of a carboxylic acid/diol mixture suitable for use in polyester production

  • US 7,339,072 B2
  • Filed: 03/10/2005
  • Issued: 03/04/2008
  • Est. Priority Date: 10/15/2002
  • Status: Expired due to Term
First Claim
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1. A process for producing a carboxylic acid/diol mixture, said process comprising adding a decolorized carboxylic acid solution comprising a carboxylic acid and water in an esterification reactor zone and adding a diol to said decolorized carboxylic acid solution in said esterification zone;

  • wherein said diol is added to remove at least 5% by weight of said water vaporization from said decolorized carboxylic acid solution to form said carboxylic acid/diol mixture.

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