Substituted (4-hydroxyphenylthio) succinic anhydride or succinat

Details Substituted (4-hydroxyphenylthio) succinic anhydride or succinat Substituted (4-hydroxyphenylthio) succinic anhydride or succinat

1983-02-03

1985-02-05

Jiles, Henry R.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

252404, 560 17, 562431, C07D30764

Patent

active

044979592

ABSTRACT:
Substituted succinic anhydride or succinate stabilizers of the formula I or II ##STR1## where R.sub.1 and R.sub.2 are independently alkyl, cycloalkyl, phenyl or aralkyl, R.sub.3 is hydrogen or methyl, R.sub.4 is hydrogen, lower alkyl or phenyl, R.sub.5 is hydrogen, alkyl, alkylthio, arylthio or the structure ##STR2## and R.sub.6 and R.sub.7 are independently hydrogen, alkyl; aryl or substituted aryl are useful as stabilizers for polymeric substrates, particularly polyolefins and rubber.

REFERENCES:
patent: 3078290 (1963-02-01), Heckenbleikner et al.
patent: 3465029 (1969-09-01), Beirne
patent: 3625978 (1971-12-01), Geering et al.
patent: 3952013 (1976-04-01), Hazard et al.
E. B. Hotelling et al., J. Org. Chem. 24, 1598 (1959).

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