Mw. Sabaa et As. Abdel-naby, 1-cyanoethanoyl-4-acryloyl thiosemicarbazide and its metal complexes as thermal stabilizers for rigid poly(vinyl chloride), POLYM DEGR, 64(2), 1999, pp. 185-190
1-Cyanoethanoyl-4-acryloyl thiosemicarbazide (CEATS) and its metal complexe
s with Sn2+, Cd2+, Co2+ ions have been investigated as thermal stabilizers
for rigid poly(vinyl chloride). The results reveal that the stabilizing eff
iciency of CEATS is comparable to that of the commonly used industrial stab
ilizers, while the stabilizing efficiencies of CEATS complexes greatly exce
ed that of the parent molecule. CEATS as a co-stabilizer with reference sta
bilizers namely Cd-Ba stearates, dibutyl tin maleate, or basic lead sulfate
led to a synergistic effect. A probable mechanism expressing the interacti
on of CEATS molecule with metal salts stabilizers has been proposed. (C) 19
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