PRODUCTS STABILIZATION PROCESS BASED hydroxyketones POSING PROBLEMS OF INSTABILITY AND EVOLUTION OF SHADE.

摘要

The invention relates to a method for stabilizing hydroxyketone products such as, for example, a diacetonic alcohol which exhibits high instability or a strong change in color or shade, making it difficult to transport it over long distances or on intercontinental routes, causing evolution of color or tint, that is to say passing from a colorless state to yellowish shades, for example, so as to no longer meet national or international specifications. The method is based on the addition of para-tert-butylcatechol type compounds in solid form or in solution, preferably to the storage container or tank, so as to achieve color stability (which is the most common specification). sensitive) of at least 100 days.