Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Patent
1998-06-30
2000-07-25
Killos, Paul J.
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
C07C21100
Patent
active
060938536
ABSTRACT:
A phenylenediamine derivative represented by following formula (I) or (II): ##STR1## wherein R.sub.1 and R.sub.2 each represents a hydrogen atom, a lower alkyl group, or a lower alkoxy group; R.sub.3 represents a hydrogen atom or a methyl group; R.sub.4 represents a methyl group or an ethyl group; and n and m each is 1, 2, or 3; ##STR2## wherein R.sub.1 and R.sub.2 each represents a hydrogen atom, a lower alkyl group, a lower alkoxy group, or a cyano group; and n and m each is 1, 2, or 3, is disclosed.
These phenylenediamine derivatives are effectively used as antioxidants for rubbers, which scarcely cause vanishing by evaporation or a thermal denaturation even under a high-temperature condition of 150.degree. C. or higher.
Nakagome Seiji
Toda Akihiko
Killos Paul J.
NOK Corporation
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