Process for the preparation of polyhydric phenols

Details Process for the preparation of polyhydric phenols Process for the preparation of polyhydric phenols

1980-10-03

1983-06-07

Lone, Werren B.

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

Organic compounds

Oxygen containing

568803, C07C 3910, C07C 3760

Patent

active

043872522

ABSTRACT:
The invention relates to an improved process for the preparation of polyhydric phenols by hydroxylation of phenols with peroxidic hydroxylating agents and in the presence of 0.00005 to 0.03% by weight (relative to the phenols employed) of substances which can form chelate complexes with metal ions, such as nitrogen-containing di- or poly- carboxylic acids or phosphoric acid derivatives. The products of the process are known to be useful in the fields of photography, dyestuffs, plastics, fragrances and flavors.

REFERENCES:
patent: 3407237 (1968-10-01), Vesely
patent: 3461170 (1969-08-01), Schmerling
patent: 3652597 (1972-03-01), Bader et al.
patent: 3943179 (1976-03-01), Bost et al.
patent: 3950437 (1976-04-01), Imamura et al.
patent: 4182918 (1980-01-01), Seifer et al.
Takamitsu et al., "Chem. Abst.", vol. 88, p. 120774u, (1978).

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