simultaneously and quantitatively measure four compounds commonly found in commercial cosmetics: 1,3-dimethylol-5,5-dimethylhydantoin (DMDMH) and its decomposition products 1-hydroxymethyl-5,5-dimethylhydantoin (1-MDMH), 3-hydroxymethyl-5,5-dimethylhydantoin (3-MDMH), and 5,5-dimethylhydantoin (DMH)...
5,5-dimethylhydantoin and the objective dimethylol hydantoin include e.g. dimethylol-5,5-dimethylhydantoin. The objective product can directly be used for uses without requiring purification process.井樋 明大村 正弘緒方 秀雄尾留川 淳景山 孝幸...
5,5-dimethylhydantoin and the objective dimethylol hydantoin include e.g. dimethylol-5,5-dimethylhydantoin. The objective product can directly be used for uses without requiring purification process.ITOI AKIRAOMURA MASAHIROOGATA HIDEOORUKAWA ATSUSHI...
of 1,3-dimethylol-5,5-dimethyl-hydantoin (I) is produced by mixing HCHO with 5,5-dimethyl -hydantoin in a molar ratio of 1.85-2.4:1, adjusting the pH to 7-9 and allowing the reaction to take place at 22-65 degrees C with in the specified pH range. (I) is used as an ...