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AssigneeCovestro Deutschland AG
InventorsMatthias Leven, Norah Heinz, Jens Langanke, Torsten Heinemann, Tzvetan Mihaylov, Kai Laemmerhold, Nicklas Deibl, Tugrul Nalbantoglu
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The invention relates to a method for producing monomers and/or oligomers from a polymer that includes a structural unit having a nitrogen-carbonyl carbon bond. The nitrogen-carbonyl carbon bond is broken in a chemical reaction with formaldehyde or paraformaldehyde as the activating reagent. The reaction takes place using a Lewis acid acting as a catalyst. The invention also relates to monomers, in particular a carboxylic acid monomer and an aldimine monomer or an amine monomer, obtained or produced from this method.
A method for producing monomers and/or oligomers from a polymer comprising a structural unit having a nitrogen-carbonyl carbon bond, wherein the nitrogen-carbonyl carbon bond is cleaved in a chemical reaction with formaldehyde or paraformaldehyde as activating reagent, and wherein the reaction is carried out using a Lewis acid acting as catalyst.
Dependencies are inferred from the claim text.