Method of preparing fine crystal particles of maleic anhydride

Details Method of preparing fine crystal particles of maleic anhydride Method of preparing fine crystal particles of maleic anhydride

1986-09-03

1987-11-24

Schwartz, Richard A.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

260707, C07D30760

Patent

active

047090570

ABSTRACT:
A method of preparing fine crystal particles of maleic anhydride is provided. The method contains the steps of putting a molten mass of maleic anhydride into a hermetically closed container moved at a moving rate of 1 to 30 times per minute and cooling the molten mass to room temperature over three hours or more. A maleic anhydride composition contains 0.01 to 5 wt. parts of colloidal silica relative to 100 wt. parts of maleic anhydride particles.

REFERENCES:
Jansons et al., Latvian P S R Zinat. Akad. Vestis, Kim. Ser., vol. 1, pp. 116-117, (1971); Chem. Ab., 75, 26211t (1975).

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