| 摘要 |
An ultra high ortho nonyl phenol phosphite is provided in the form of a mixed ortho-para tris nonyl phenyl phosphite composition. The composition is produced by reacting PCl3 with a nonyl phenyl composition comprising (a) para-unsubstituted/ortho substituted nonyl phenol present at a level of from 98 to 99.95 percent by weight based on the total weight of the nonyl phenol composition. The phosphite composition surprisingly and unexpectedly exhibits a substantial increase hydrolyric stability over that of conventional high ortho tris nonyl phenyl phosphite. The phosphite is useful for stabilizing thermoplastic compositions, which may be then extruded or molded into articles such as film, sheet or useful thermoplastic objects.
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