Tri- and Tetra-(substituted hydroxyphenylthio) alkane and cycloalkane stabilizers and stabilized compositions
First Claim
1. A compound of formula I ##STR7## wherein T1 and T2 are independently alkyl of 1 to 12 carbon atoms, cycloalkyl of 5 to 6 carbon atoms, phenyl, phenyl substituted by alkyl of 1 to 12 carbon atoms, phenylalkyl of 7 to 9 carbon atoms or said phenylalkyl substituted by alkyl of 1 to 12 carbon atoms,T2 may also be hydrogen,T is alkyl of 1 to 24 carbon atoms, phenyl, phenyl substituted by alkyl of 1 to 12 carbon atoms, or the group ##STR8## E is a direct bond, alkylene of 1 to 11 carbon atoms, cycloalkylene of 5 to 6 carbon atoms or phenylene, or is the group ##STR9## T3 and T4 are independently hydrogen, alkyl of 1 to 30 carbon atoms, said alkyl substituted by phenyl or by phenyl substituted by alkyl of 1 to 12 carbon atoms, cycloalkyl of 5 to 6 carbon atoms, orT3 and T4 together are straight- or branched-chain alkylene of 3 to 7 carbon atoms when E is methylene,T5 is hydrogen, alkyl of 1 to 4 carbon atoms or phenyl,n is 1 or 2, t is 0 or 1, and t is 2-n.
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Abstract
Organic materials are stabilized against thermal, oxidative and photo-degradation by incorporating therein an effective amount of a compound of formula I ##STR1## wherein T1 T2 independently are alkyl, cycloalkyl, phenyl, aralkyl, T2 may also be hydrogen, T is alkyl, phenyl or substituted hydroxyphenyl, E is a direct bond, alkylene, cycloalkylene, phenylene or --CH2 CH(ST)CH2 --, T3 and T4 are independently hydrogen, alkyl or cycloalkyl; or together are alkylene, T5 is hydrogen, alkyl or phenyl, n is 1 or 2, t is 0 or 1, and t is 2-n. Polyolefins, ABS resins, natural and synthetic rubbers and polyesters are particularly well stabilized by the compounds of formula I.
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Citations
14 Claims
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1. A compound of formula I ##STR7## wherein T1 and T2 are independently alkyl of 1 to 12 carbon atoms, cycloalkyl of 5 to 6 carbon atoms, phenyl, phenyl substituted by alkyl of 1 to 12 carbon atoms, phenylalkyl of 7 to 9 carbon atoms or said phenylalkyl substituted by alkyl of 1 to 12 carbon atoms,
T2 may also be hydrogen, T is alkyl of 1 to 24 carbon atoms, phenyl, phenyl substituted by alkyl of 1 to 12 carbon atoms, or the group ##STR8## E is a direct bond, alkylene of 1 to 11 carbon atoms, cycloalkylene of 5 to 6 carbon atoms or phenylene, or is the group ##STR9## T3 and T4 are independently hydrogen, alkyl of 1 to 30 carbon atoms, said alkyl substituted by phenyl or by phenyl substituted by alkyl of 1 to 12 carbon atoms, cycloalkyl of 5 to 6 carbon atoms, or T3 and T4 together are straight- or branched-chain alkylene of 3 to 7 carbon atoms when E is methylene, T5 is hydrogen, alkyl of 1 to 4 carbon atoms or phenyl, n is 1 or 2, t is 0 or 1, and t is 2-n.
Specification