Removal of dissolved disodium terephthalate from aqueous solutio

Details Removal of dissolved disodium terephthalate from aqueous solutio Removal of dissolved disodium terephthalate from aqueous solutio

1978-12-11

1980-07-29

Siegel, Alan

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

Organic compounds

Carboxylic acids and salts thereof

423183, 423641, 562486, C07C 5142

Patent

active

042152240

ABSTRACT:
This invention relates to the removal of substantially all of the disodium terephthalate (Na.sub.2 TA) dissolved in a dilute aqueous solution of sodium hydroxide. More particularly this invention pertains to the recovery for reuse of an aqueous solution containing 5 weight percent sodium hydroxide from an aqueous solution containing, on a weight basis, from 5 to 5.25 percent Na.sub.2 TA and 2.5 to 3.0 percent sodium hydroxide.

REFERENCES:
patent: 2697723 (1954-12-01), Carlston
patent: 2719109 (1955-09-01), Harper

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