Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1982-05-27
1984-10-02
Hoke, V. P.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
260930, 260953, 524101, 524128, 252 498, C07F 9145, C07F 9146
Patent
active
044749171
ABSTRACT:
Phenolic-phosphite antioxidants for use alone in polyolefins or in admixture with synergists, phenolic/phosphite antioxidants, and the like. The adduct formed by reacting a phosphorus trihalide, preferably PCl.sub.3, with 1,3,5-trimethyl-2,4,6-tris(3',5'-di-tert-butyl-4'-hydroxybenzyl)benzene, e.g., is useful for antioxidant activity in organic materials. Various other phenolic adducts also show antioxidant activity. The adducts are formed by reacting PCl.sub.3, e.g., with a large phenolic compound having three or more phenolic moieties. The adducts contain components which are noncyclic with respect to phosphite moieties.
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C. David Gutsche et al., "Calixarenes 4, The Synthesis, Characterization and Properties of the Calixarenes from p-tert-Butylphenol"-J. Am. Chem. Soc., 1981, 103, 3782-3792.
Ethyl Corporation
Hoke V. P.
Hunt John F.
Johnson Donald L.
Sieberth John F.
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