| 摘要 |
PURPOSE:To easily produce an MgF2 film which is stable and has an excellent low reflection characteristic by a chemical technique by applying a soln. contg. an MgF2 sol formed by the reaction of an Mg salt and BF3 complex salt on a base body and then heating the base body. CONSTITUTION:This invention relates to the process for producing the MgF2 film applied to a cathode ray tube panel, etc., and the process for producing a low reflecting film and comprises applying the soln. contg. the MgF2 sol formed by the reaction of the Mg salt and the BF3 complex salt on the base body, then heating the base body. This reaction is progressed by dispersing or dissolving the starting materials for the Mg salt and the BF3 complex salt and the reaction rate can be increased by further heating the soln. The Mg salt of the starting material is preferably the halide, MgCl2, MgBr2, MgI2, etc., expressed by general formula MgX2 (X=halogen elements excluding fluorine) and the BF3 complex salt is exemplified by an ethyl ether complex salt, methanol complex salt, ethanol complex salt, acetic acid complex salt, etc. |
