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The fate of organotin stabilisers in poly(vinyl chloride) (PVC) under processing conditions and during thermal degradation
Author(s) -
Müller Hermann A.
Publication year - 1989
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19890290115
Subject(s) - vinyl chloride , degradation (telecommunications) , polyvinyl chloride , chemistry , polymer , polymer chemistry , thermal , chloride , chemical engineering , materials science , organic chemistry , nuclear chemistry , copolymer , telecommunications , computer science , engineering , physics , meteorology
Quantitative 119 Sn‐NMR spectroscopy is a valuable tool to identify and determine quantitatively all organotin species which are formed in PVC during processing or a thermal degradation test by reaction with the polymer or by subsequent ligand exchange reactions between different organotin compounds. By this method conversion rates of monoalkyltin and dialkyltin isooctylthioglycolates in PVC have been determined as a function of the duration of thermal treatment. It is shown that organotin stabilisers can also react with lubricants and other additives to compounds like R 2 Sn(SR)(OCOR) during the processing of PVC, thus influencing the efficiency of the stabilising action.