▎ 摘 要
NOVELTY - Maccording to claim 24 wherein the carded laid web is hydroentangled on an upper away from the foraminous carrier. methodaccording to claim 24 wherein the carded laid web is hydroentangled on an upperture comprises solution of alkylsulfonic acid and 1-(4-acetylphenyl)ethan-1-one derivative of (I)-(III) and acetophenone. USE - Mixture. ADVANTAGE - The mixture has good thermal stability. DETAILED DESCRIPTION - Mixture comprises solution of alkylsulfonic acid and 1-(4-acetylphenyl)ethan-1-one derivative of group of formulae (I)-(III) and acetophenone.