Hindered phenol hydrazones and compositions stabilized therewith

Details Hindered phenol hydrazones and compositions stabilized therewith Hindered phenol hydrazones and compositions stabilized therewith

1978-11-15

1980-11-11

Hoke, V. P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 4585R, 260 459NC, 2604045, 560221, 560251, 564150, C08K 536, C07C10330, C08K 530, C07C10358

Patent

active

042332095

ABSTRACT:
Hindered phenol hydrazones of the formula ##STR1## wherein R.sub.1 and R.sub.2 are alkyl of 1 to 8 carbons or R.sub.1 can also be hydrogen, n is 1 to 6, R' is hydrogen or alkyl, R.sub.3 is alkyl, phenyl, substituted phenyl, alkylenethioalkyl or alkylenethioether ester of a carboxylic acid or a group ##STR2## where T is a direct bond, alkylene, sulfur or oxygen interrupted alkylene or phenylene, said compounds being useful as diene rubber stabilizers.

REFERENCES:
patent: T857036 (1968-12-01), Straley et al.
patent: 3547646 (1970-12-01), Hori et al.
patent: 3549572 (1970-12-01), Minagawa et al.
patent: 3745163 (1973-07-01), Holt et al.
patent: 3773830 (1973-11-01), Dexter
patent: 3894083 (1975-07-01), Hofer et al.
patent: 4073771 (1978-02-01), Hartless et al.

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