Explanation
It is also called sensitizer and sensitizer. Some substances cannot directly absorb light of a certain wavelength, that is, they are not sensitive to light. However, if another substance is added to the system, the substance can absorb this light radiation and transfer the energy of light to the reactant, so that the reactant can have a chemical reaction. The added substance is called a photosensitizer. The photochemical reaction initiated is called a photosensitization reaction.
Classification
Organic polymer materials -> Polymer additives -> Additives