The amount of melamine to be used is suitably maintained at a concentration within 0.5-3.5mol%, preferably 1- 2.5mol% range. As a reacting procedure, usually a method wherein oxalyl chloride in the liquid or gas form is added to an aqueous solution of the hydrogen fluoride containing ...
The amount of melamine to be used is suitably maintained at a concentration within 0.5-3.5mol%, preferably 1- 2.5mol% range. As a reacting procedure, usually a method wherein oxalyl chloride in the liquid or gas form is added to an aqueous solution of the hydrogen fluoride containing ...