Processes for preparing organic compounds having improved...

Details Processes for preparing organic compounds having improved... Processes for preparing organic compounds having improved...

2003-08-07

2009-02-17

Puttlitz, Karl J (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

C562S512000

Reexamination Certificate

active

07491839

ABSTRACT:
Carboxylic acids, ketones, and esters having improved color characteristics are produced by combining small quantities of water with these compounds. An amount of water ranging from about 100 ppm to about 50,000 ppm of the organic compound is combined to provide lighter color compounds in comparison to these same compounds to which no water is added. Additionally, the color characteristics of the organic compounds may be improved by introducing a stream of the organic compound into at least one distillation column maintained at a temperature of about 23° C. to about 250° C. and at a pressure of about 10.1 kPa to about 202.6 kPa. Subjecting the organic compound stream to distillation under these conditions allows precursors of color bodies, having boiling points lower than the boiling point of the product being produced, to thermally breakdown or to be removed in the overhead stream form the distillation column.

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