The anti-oxidation performance of 3,7-di-iso-octyl-phenothiazine was measured in group Ⅰ,Ⅱ and Ⅳ base oils by rotating pressure vessel oxidation testing(RPVOT),pressure differential scanning calorimetry(PDSC)and ag...The anti-oxidation performance of 3,7-di-iso-octyl-phenothiazine was measured in group Ⅰ,Ⅱ and Ⅳ base oils by rotating pressure vessel oxidation testing(RPVOT),pressure differential scanning calorimetry(PDSC)and aging test,and its synergistic effect with 4,4′-di-iso-octyl-diphenylamine was examined.The results indicated that 3,7-di-iso-octyl-phenothiazine showed longer oxidation induction period and lower acid number increase than 4,4′-di-iso-octyl-diphenylamine,and their notable synergistic effect was observed.It was found that the anti-oxidation characteristics of the above-mentioned antioxidants were strongly affected by the composition of the corresponding base oil.展开更多
Five amido thiol tin compounds, bis N,N dialkylaminocarbonylethyl tin bis iso octyl sufenylacetates, were prepared by reacting esters thiol tin or ester tin dichloride with secondary amines. The structures of the comp...Five amido thiol tin compounds, bis N,N dialkylaminocarbonylethyl tin bis iso octyl sufenylacetates, were prepared by reacting esters thiol tin or ester tin dichloride with secondary amines. The structures of the compounds were determined by IR, 1H NMR , 119 Sn NMR and elemental analysis. The new compounds have a good heat stability for PVC resin, among them bis N,N dihydroxyethylaminocarbonylethyl tin bis iso octyl sufenylacetate is the best one.展开更多
文摘The anti-oxidation performance of 3,7-di-iso-octyl-phenothiazine was measured in group Ⅰ,Ⅱ and Ⅳ base oils by rotating pressure vessel oxidation testing(RPVOT),pressure differential scanning calorimetry(PDSC)and aging test,and its synergistic effect with 4,4′-di-iso-octyl-diphenylamine was examined.The results indicated that 3,7-di-iso-octyl-phenothiazine showed longer oxidation induction period and lower acid number increase than 4,4′-di-iso-octyl-diphenylamine,and their notable synergistic effect was observed.It was found that the anti-oxidation characteristics of the above-mentioned antioxidants were strongly affected by the composition of the corresponding base oil.
文摘Five amido thiol tin compounds, bis N,N dialkylaminocarbonylethyl tin bis iso octyl sufenylacetates, were prepared by reacting esters thiol tin or ester tin dichloride with secondary amines. The structures of the compounds were determined by IR, 1H NMR , 119 Sn NMR and elemental analysis. The new compounds have a good heat stability for PVC resin, among them bis N,N dihydroxyethylaminocarbonylethyl tin bis iso octyl sufenylacetate is the best one.
