Process for the manufacture of maleic anhydride having improved

Details Process for the manufacture of maleic anhydride having improved Process for the manufacture of maleic anhydride having improved

1981-05-29

1982-11-09

Jiles, Henry R.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D30760

Patent

active

043586007

ABSTRACT:
A novel process for obtaining maleic anhydride having age molten and Hazen color below 125 after 20 hours at 140.degree. C., said process comprising polymerizing at a temperature of about 53.degree. to 90.degree. C. in the presence of metal chloride catalyst, color bodies present in crude maleic anhydride prior to fractionating the crude maleic anhydride and distilling off the purified maleic anhydride.

REFERENCES:
patent: 2296218 (1942-09-01), Middleton
patent: 3975408 (1976-08-01), Boyer et al.

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