摘要:
Verbindungen der Formel I, worin n 1, 2 oder 3 ist, R¹ C₁-C₅-Alkyl, Cyclohexyl oder α-Methylcyclohexyl bedeutet und wenn n 1 ist, X eine Gruppe der Formel II oder III darstellt, worin R² und R³ unabhängig voneinander C₁-C₈-Alkyl oder Cyclohexyl bedeuten, Y eine direkte Bindung, -S-, S=O oder ein Rest -CR⁴R⁵-ist, worin R⁴ Wasserstoff, C₁-C₈-Alkyl, C₅-C₈-Cycloalkyl, Phenyl oder Benzyl bedeutet und R⁵ Wasserstoff oder C₁-C₈-Alkyl ist, Z 1,2-oder 1,3-Alkylen mit höchstens 15 Kohlenstoffatomen oder o-Phenylen bedeutet, und wenn n 2 ist, X eine Gruppe der Formel IV oder V darstellt,
摘要:
2,6-di-t-butyl-4-substituted phenyl bis(3,6-di-t-butyl-2-naphthyl)phosphites, readily prepared by reacting together a phosphorodichloridite of a 4-substituted-2,6-di-t-butylphenol and a sodium salt of 3,6-di-t-butyl-2-naphthol, to form antioxidant and ultraviolet stabilizers that form particularly effective combinations with hydroxyphenylalkyleneyl isocyanurates to provide enhanced oven aging properties to organic materials subject to attack by heat and oxygen.
摘要:
2,6-Di-tertiary butyl phenyl phosphites are provided having the structure: wherein: R is selected from the group consisting of hydrogen, methyl, ethyl, and (CH 2 ) m COOR, where R is selected from the group consisting of alkyl having from one up to about ten carbon atoms; cycloalkyl having from three up to about twelve carbon atoms; alkaryl and aryl having from six to about twelve carbon atoms; and m is a number within the range from 0 to 5; R 2 is selected from the group consisting of hydrogen, alkyl having from one to about twenty-two carbon atoms; cycloalkyl having from three up to about twelve carbon atoms; alkaryl and aryl having from six to about eighteen carbon atoms; the residue of a polyhydric alcohol having from two to about eighteen carbon atoms, and from two to three hydroxyl groups; and the residue of a polyphenol having from six to about eighteeen carbon atoms and from two to about ten phenolic hydroxyl groups; R 3 is selected from the group consisting of hydrogen and P(OR 2 ) 2 ; Z is the bivalent or trivalent residue of a polyhydric alcohol having from two to about eighteen carbon atoms, and from two to three hydroxyl groups; or of a polyphenol having from six to about eighteen carbon atoms and from two to about ten phenolic hydroxyl groups; n, is 0 or 1; and n 2 is a number from 1 to 5; as well as synthetic resin compositions having an enhanced resistance to deterioration by heat and/or light due to the presence of an organic phosphite of this class.