Process for the preparation of an n-alkyl lactam with improved colour quality
AssigneeBASF SE
InventorsTobias Wabnitz, Rolf Pinkos, Karl Ott
Life of this patent
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Abstract
A process for preparing an N-alkyllactam with improved color quality, wherein from 0.01 to 10% by weight of a C1-10-alcohol or a compound which releases from 0.01 to 10% by weight of a C1-10-alcohol is added to the N-alkyllactam. A mixture comprising at least 99.0% by weight of an N-alkyllactam and in the range from 100 to 5000 ppm by weight of a C1-10-alcohol or of an acetal, aminal or of an orthoester which releases in the range from 100 to 5000 ppm by weight of a C1-10-alcohol.
Claims23
A process for preparing an N-alkyllactam with improved color quality, which comprises adding to the N-alkyllactam from 0.01 to 10% by weight of a C1-10-alcohol or a compound which releases from 0.01 to 10% by weight of a C1-10-alcohol.
12-17. (canceled)
A process for reducing N-alkyllactam with yellowing, the process comprising adding to the N-alkyllactam from 0.01 to 10% by weight of a C1-10-alcohol or a compound which releases from 0.01 to 10% by weight of a C1-10-alcohol.
Dependencies are inferred from the claim text.