Production of hydroquinone from nonaqueous solvent systems

Details Production of hydroquinone from nonaqueous solvent systems Production of hydroquinone from nonaqueous solvent systems

1977-09-14

1978-09-05

Thomas, Jr., James O.

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

Organic compounds

Oxygen containing

568811, C07C 3908

Patent

active

041122437

ABSTRACT:
A process whereby photograde quality hydroquinone can be separated from the reaction mixture produced by a rearrangement of p-diisopropylbenzene dihydroperoxide, which process comprises the steps of (1) subjecting the mixture to hydrogenation to remove color; (2) concentrating the colorless solution; (3) adding a solvent to the concentrated mixture which dissolves impurities but which causes the hydroquinone to precipitate; and (4) separating the hydroquinone from the supernatant liquid in step (3).

REFERENCES:
patent: 3798277 (1974-03-01), Sugiyama
patent: 3884983 (1975-05-01), Burkholder
patent: 3895079 (1975-07-01), Anderson
patent: 3968171 (1976-07-01), Burkholder
patent: 4049723 (1977-09-01), Tanaka et al.

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