Trimethylolpropane color improvement

Details Trimethylolpropane color improvement Trimethylolpropane color improvement

1994-07-21

1997-02-18

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210634, 210192, B01D 1104

Patent

active

056038356

ABSTRACT:
This invention relates to a process for improving the color of trimethylolpropane (TMP) by extracting color-causing impurities generated in the reaction to produce TMP. This improved color TMP is characterized by a reduced acid wash color and phthalic anhydride color--color measurement tests commonly used in the industry for assessing product quality and suitability of the TMP for certain color sensitive end-uses.

REFERENCES:
patent: 3956406 (1976-05-01), Palmer et al.

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