| 摘要 |
<p>A resin stabilizer composition which essentially contains an organotin sulfur-containing compound having a ?-Sn-S group, for example, organotin mercaptides, organotin mercaptoacids, organotin mercaptoacid esters, organotin sulfides, organothiostannoic acids and the like, and metal compound selected from the group consisting of an alkali metal bisulfite, carbonate, hydroxide, oxide, thiocarbonate, bicarbonate and metabisulfite, and mixtures of said metal compounds, said organotin and metal compound components in relative amounts which together provide a synergistic stabilizing effectiveness upon said resin. These compositions remarkably contribute to the long term heat stability of vinyl halide resins. Furthermore, among other advantages, significant economies and synergistic resin heat stabilization are offered by these stabilizer compositions.</p> |
