2.6 - di - tertio - butyl - phenyl - pentaerythritol - spir bis phosphites, the bestaendigkeit against warmth and light synthetic resins increase, stabilisatorzusammensetzungen, phenolic antioxidants, and such phosphites, and synthetic harzzusammensetzungen, such compositions containing.

摘要

2,6-Di-tertiary butyl phenyl pentaerythritol spiro bisphosphites are provided having the structure: IMAGE wherein: R is alkyl having from one to six carbon atoms; R1 is methyl or ethyl; R2 is selected from the group consisting of alkyl having from one up to about eighteen carbon atoms; cycloalkyl having from three up to about twelve carbon atoms; and alkaryl and aryl having from six to about thirty carbon atoms; such groups substituted with from one to about four oxy ether-O- and/or carboxylic ester-COO-groups; the residue of a polyhydric alcohol having from two to about eighteen carbon atoms, and from two to about ten hydroxyl groups; and the residue of a polyphenol having from six to about eighteen carbon atoms and from two to about ten phenolic hydroxyl groups. Stabilizer compositions are provided comprising a phenolic antioxidant and such phosphites as well as synthetic resin compositions having an enhanced resistance to deterioration by heat and/or light due to the presence of such a phosphite and/or stabilizer composition.