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Mechanisms of antioxidant action: Tellurium dithiocarbamates as antioxidants for polypropylene
Author(s) -
AbedAli S.,
Ahmed M. A. K.,
McWhinnie W. R.,
Scott G.
Publication year - 1986
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1986.070320508
Subject(s) - tellurium , polypropylene , antioxidant , chemistry , polymer chemistry , materials science , organic chemistry , chemical engineering , engineering
The tetrakis (dialkyldithiocarbamato)tellurium(IV) complexes are highly effective thermal antioxidants and melt stabilizers for polypropylene and the evidence suggests that they are converted to the bis(dialkyldithiocarbamato)tellurium(II) complexes and the corresponding dithiocarbamoyl disulfides during processing. The Te(IV) complexes are also effective photoantioxidants and their activity increases with increasing processing time. The bischelates are in general less effective when used alone.