Mercaptoacetic acid, isooctyl thioglycolate and barium hydroxide used as start materials, barium bis (2 ethylhexyl thioglycolate) (Ba(2EHTG) 2), barium thioglycolate (Ba(TG)) and barium bisthioglycolate (Ba(TG) 2) wer...Mercaptoacetic acid, isooctyl thioglycolate and barium hydroxide used as start materials, barium bis (2 ethylhexyl thioglycolate) (Ba(2EHTG) 2), barium thioglycolate (Ba(TG)) and barium bisthioglycolate (Ba(TG) 2) were synthesized. Their optimum synthetic techniques were discussed, and some physicochemical data were reported. Infrared spectroscopy and elemental analysis methods were used to identify the structures. They were put into PVC plastic products together with antimony tris (2 ethylhexyl thioglycolate) (Sb(2EHTG) 3) under the suitable compounding, and their heat stability to PVC was studied. It is shown that these barium mercaptides have remarkable synergisms with antimony mercaptides and the long term stabilizing effect of organoantimony stabilizer can be effectively improved, reducing the amount of antimony compounds so as to avoid the decrease of its stabilizing effect.展开更多
Organotin mercaptide-based thermal stabilizer is recognized for its effectiveness in enhanc-ing thermal stability of polyvinyl chloride(PVC).In this study,we synthesized an organotin mercaptide-based thermal stabilize...Organotin mercaptide-based thermal stabilizer is recognized for its effectiveness in enhanc-ing thermal stability of polyvinyl chloride(PVC).In this study,we synthesized an organotin mercaptide-based thermal stabilizer from palm fatty acid distillate,which is a by-product of palm oil refining process,and then evaluated its thermal stabilizing effects on PVC and compared its efficacy and economics to those of mixed metal stearate.The synthesized thermal stabilizer mani-fests as methyltin mercaptoethyl carboxylate sulfides.Both dehydrochlorination and two-roll mill discoloration tests have demonstrated the high efficacy of the resulting thermal stabilizer in stabi-lizing PVC,surpassing the performance of mixed metal stearate,as evidenced by the lower dosage required.The synthesized PVC thermal stabilizer not only provides effective stabilization but also presents a competitive viable alternative.展开更多
文摘Mercaptoacetic acid, isooctyl thioglycolate and barium hydroxide used as start materials, barium bis (2 ethylhexyl thioglycolate) (Ba(2EHTG) 2), barium thioglycolate (Ba(TG)) and barium bisthioglycolate (Ba(TG) 2) were synthesized. Their optimum synthetic techniques were discussed, and some physicochemical data were reported. Infrared spectroscopy and elemental analysis methods were used to identify the structures. They were put into PVC plastic products together with antimony tris (2 ethylhexyl thioglycolate) (Sb(2EHTG) 3) under the suitable compounding, and their heat stability to PVC was studied. It is shown that these barium mercaptides have remarkable synergisms with antimony mercaptides and the long term stabilizing effect of organoantimony stabilizer can be effectively improved, reducing the amount of antimony compounds so as to avoid the decrease of its stabilizing effect.
文摘Organotin mercaptide-based thermal stabilizer is recognized for its effectiveness in enhanc-ing thermal stability of polyvinyl chloride(PVC).In this study,we synthesized an organotin mercaptide-based thermal stabilizer from palm fatty acid distillate,which is a by-product of palm oil refining process,and then evaluated its thermal stabilizing effects on PVC and compared its efficacy and economics to those of mixed metal stearate.The synthesized thermal stabilizer mani-fests as methyltin mercaptoethyl carboxylate sulfides.Both dehydrochlorination and two-roll mill discoloration tests have demonstrated the high efficacy of the resulting thermal stabilizer in stabi-lizing PVC,surpassing the performance of mixed metal stearate,as evidenced by the lower dosage required.The synthesized PVC thermal stabilizer not only provides effective stabilization but also presents a competitive viable alternative.
