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US 2012/0074354 A1Published application
Method for the restabilization of (meth)acrylic monomers
AssigneeBASF SE
InventorsNorbert Herfert, Ulrich Hammon, Renate Wuestefeld
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Abstract
A process for replacing the stabilization of (meth)acrylic monomers, wherein phenothiazine is removed from phenothiazine-containing (meth)acrylic monomers by adsorption on activated carbon, and then a moderately active polymerization inhibitor is optionally added.
Claims20
A process for removing phenothiazine from a (meth)acrylic monomer, comprising:
- removing phenothiazine from a phenothiazine-containing (meth)acrylic monomer by adsorption on activated carbon.
The process of claim 17, wherein the moderately active polymerization inhibitor is a phenolic compound or a quinone.
Dependencies are inferred from the claim text.