Derivatives of piperidine sterically hindered, as a protective Agent against Light for Polymers, Process for their PreparationUsing these derivatives to stabilize Organic Materials, procedure for Stabilization against degradation of polymeric material

摘要

As a photoprotective agent of polymer, it is extracted from pyridine derivatives of cosmetic disability and increases molecular weight through photochemical reaction. In this case, they are compounds of general formula (I),The different substitutes have the meanings defined in the descriptive report. It also refers to procedures for the preparation and use of these derivatives to stabilize organic weapons, for the degradation of polygonal substances by light and heat, and for the stabilization of organic substances.