Process for the synthesis of (math)acrylic anhydrides

Details Process for the synthesis of (math)acrylic anhydrides Process for the synthesis of (math)acrylic anhydrides

1988-04-29

1989-08-15

Killos, Paul J.

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

Organic compounds

Carboxylic acid anhydrides

C07C 5704

Patent

active

048572390

ABSTRACT:
The present invention relates to a process for the synthesis of (meth)acrylic anhydride, according to which (meth)acrylic acid is reacted with acetic anhydride in the presence of at least one polymerization inhibitor, in a reactor surmounted by a distillation column. This process is characterized in that the mole ratio of (meth)acrylic acid to acetic anhydride is chosen to be between 2 and 5, in that the reaction is performed in the absence of catalyst, and in that:

REFERENCES:
patent: 2319070 (1943-05-01), Lowe et al.
patent: 2411567 (1946-11-01), Fisher et al.

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