Low viscous p-phenylene diamine stabilizers
AssigneeSumitomo Chemical Company, Limited
InventorsOsamu Kimura, Takashi Kojima, Eizo Okino, Hideo Nagasaki
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Abstract
A normally liquid stabilizer for rubber or urethane resin, obtained by reacting hydroquinone with a mixture of aromatic amines of the formula: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3, independently of each other, are hydrogen or C.sub.1-18 alkyl, said aromatic amine mixture containing 7-26 weight % of p-ethylaniline and 8-40 weight % of 2,4-xylidine.
Claims13
A normally liquid stabilizer for rubbers and urethane resins, which comprises, as the effective ingredient, a diaryl-p-phenylenediamine mixture obtained by reacting hydroquinone with an aromatic amine mixture of aromatic amines of the formula:
- ##STR8## wherein R.sub.1, R.sub.2 and R.sub.3, independently of each other, are hydrogen or C.sub.1-18 alkyl, said aromatic amine mixture containing 7-26 weight % of p-ethylaniline and 8-40 weight % of 2,4-xylidine.
Dependencies are inferred from the claim text.