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US 2002/0161260 A1Published application
Process for manufacturing unsaturated carboxylic acid anhydrides
AssigneeRoehm GmbH
InventorsBardo Schmitt, Joachim Knebel, Wolfgang Klesse, Andrea Wittkowski, Benedikt Laux
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Abstract
A process for preparing an unsaturated carboxylic acid anhydride, which includes: reacting an unsaturated carboxylic acid and a lower aliphatic carboxylic acid anhydride in the presence of: a catalyst; and a stabilizer.
Claims20
A process for preparing an unsaturated carboxylic acid anhydride, comprising:
- reacting an unsaturated carboxylic acid and a lower aliphatic carboxylic acid anhydride in the presence of:
- a catalyst;
- and
- a stabilizer.
1 more element
A process for preparing methacrylic anhydride, comprising:
- reacting methacrylic acid and acetic anhydride in the presence of:
- a catalyst;
- and
- a stabilizer.
1 more element
Dependencies are inferred from the claim text.