| 摘要 |
NEW MATERIAL:The 2-hydroxyethyl-(mono and/or polyoxyethyl)trialkyl ammonium hydroxide of formula (R, R' and R'' are 1-5C alkyl; 1<=n<=10). EXAMPLE:Trimethyl hydroxyethoxyethyl ammonium hydroxide. USE:An etchant, releasing agent, etc., for the film, sheet, etc., of photosetting resin, or a cleaning agent, etc., for a glass article to which especially high cleanness is required. PREPARATION:A compound of formula I wherein n is 1 can be prepared e.g. by reacting a trialkylamine with 2-(2'-chloroethoxy)ethanol, and exchanging the halogen ion of the resultant trialkyl 2-hydroxyethoxyethyl ammonium halide with hydroxyl ion. |
