Oblon, Fisher, Spivak, McClelland & Maier
Anti-oxidant phenol derivatives
 A phenol derivative represented by the formula ##STR1## wherein R.sup.1 is a secondary or tertiary hydrocarbon residue of having 3 to 8 carbon atoms, R.sup.2 is a hydrocarbon residue having 1 to 12 carbon atoms, X is ##STR2## wherein R.sup.3, R.sup.4 and R.sup.5 each is an alkylene group having 1 to 4 carbon atoms, Z is an n-valent group and n is an integer of 1 to 8. This compound is effective to prevent the oxidation of organic materials. 
Mitsubishi Yuka Fine Chemicals Co., Ltd.
C C C C C
C07D C07H C07D C07C C08K
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Kazuhiko Makoto Masaki Akiyoshi Kenji
Konno Tadeka Saito Oonishi Tanaka