Studies of the degradation of organotin stabilizers in poly(vinyl chloride) during gamma irradiation

Organotin stabilizers of the type Bu2SnX2 (X = SCH2CO2C8H17 or O2CCHCHCO2C8H17) present in poly(vinyl chloride) (PVC) and subjected to varying doses of gamma irradiation in the range 1–200 kGy (0.1–20 Mrad) are shown to suffer degradation with dealkylation to form monobutyltin trichloride and tin(I...

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Veröffentlicht in:	Applied organometallic chemistry 1987, Vol.1 (4), p.311-317
Hauptverfasser:	Allen, David W, Brooks, John S, Unwin, John, McGuinness, John D
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Compounding ingredients Dealkylation Degradation Dibutyltin Exact sciences and technology Gamma irradiation Organotin stabilizers Polymer industry, paints, wood Polymers PVC Stabilizers (antioxydants, antiozonants, etc.) Technology of polymers
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Beschreibung
Zusammenfassung:	Organotin stabilizers of the type Bu2SnX2 (X = SCH2CO2C8H17 or O2CCHCHCO2C8H17) present in poly(vinyl chloride) (PVC) and subjected to varying doses of gamma irradiation in the range 1–200 kGy (0.1–20 Mrad) are shown to suffer degradation with dealkylation to form monobutyltin trichloride and tin(IV) chloride, which have been characterized by a subsequent alkylation procedure followed by gas chromatographic analysis. The extent of degradation of the stabilizers on prolonged gamma irradiation is much more severe than during thermal degradation leading to comparable blackening of the polymer.
ISSN:	0268-2605 1099-0739
DOI:	10.1002/aoc.590010404