L. Jiráčková-Audouin, V. Bellenger, J. Verdu, D. Ranceze
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Photochemical behaviour of thio-organotin stabilizers in polystyrene films
The sensitizing activity of thio-organotin stabilizers and some of their known or presumed by-products was studied during the photooxidation of polystyrene films in the solar UV range. All the dialkyltin dithioesters accelerated the photo-oxidation of PS noticeably. Among by-products, dialkyltin thioester chloride and alkyltin trichloride are also sensitizers. The nature of primary photochemical acts is discussed on the basis of a comparison of the electronic spectra of the compounds under study.
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