Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1978-04-26
1979-04-03
Hart, Charles N.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210 59, 568753, C02B 120
Patent
active
041476255
ABSTRACT:
Trimethylhydroquinone (TMHQ) which is discolored in organic solution because of air oxidation can be made nearly colorless by addition of small amounts of alkali metal borohydride to the discolored solution. Products remaining in the TMHQ solution after discoloration removal can be extracted by water wash. This technique represents a very simple and efficient method for removing discoloration which has proved troublesome in the prior art.
REFERENCES:
patent: 3981929 (1976-09-01), Davis et al.
Castel Benoit
Continental Oil Company
Hart Charles N.
Schupbach, Jr. Cortlan R.
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