Obtaining maleic anhydride not prone to discolor

Details Obtaining maleic anhydride not prone to discolor Obtaining maleic anhydride not prone to discolor

1989-01-04

1990-05-01

Lee, Mary C.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549257, 549262, C07D30760

Patent

active

049219774

ABSTRACT:
Process for obtaining maleic anhydride that is not prone to discolor by treating crude maleic anhydride with oxygen, a gas mixture containing oxygen, or a substance that releases oxygen before or while it is distilled.

REFERENCES:
patent: 3041251 (1962-06-01), Perfetti et al.
patent: 3622600 (1971-11-01), Feder
patent: 3965126 (1976-06-01), Wirth et al.
patent: 4260546 (1981-04-01), Schroeder et al.
patent: 4675420 (1987-06-01), Block et al.
Vogler et al., J. of Chemical and Engineering Data, vol. 8, No. 4, pp. 620-623, Oct. 1963.

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