N-substituted tetrahydroquinolines for use as antioxidants in lu

Details N-substituted tetrahydroquinolines for use as antioxidants in lu N-substituted tetrahydroquinolines for use as antioxidants in lu

1989-02-02

1990-10-23

Chaudhuri, Olik

Compositions

Electrolytes for electrical devices

252 51, 252 515R, 252 77, 252401, C10M10556

Patent

active

049650068

ABSTRACT:
Composition containing (a) at least one lubricant, hydraulic oil or metal-working fluid based on mineral oil or synthetic oils and (b) 0.05-5% by weight, based on the total weight of the lubricant, hydraulic oil or metal-working fluid composition, of at least one compound of the formula I, ##STR1## where R.sup.1 and R.sup.2 are independently alkyl, aryl, substituted aryl or benzyl, R.sup.3 is hydrogen or methyl, R.sup.4 and R.sup.5 are independently hydrogen, methyl, methoxy, chloro or nitro, R.sup.6 is alkyl, alkenyl, aralkyl or substituted benzyl, and R.sup.13 is hydrogen or methyl.

REFERENCES:
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patent: 4025631 (1977-05-01), Bar et al.
patent: 4692258 (1987-09-01), Rasberger et al.
patent: 4828741 (1989-05-01), Meier et al.
Chem. Abstract 21162b (1958).
Lubrication & Lubricants, Encyclopedia of Chemical Technology, 3rd Ed., vol. 14, pp. 484-485.
Ullmanns, vol. 14, pp. 682-683.
Ullmanns, vol. 9, pp. 516-518.
Rompps Chemie-Lexikon, p. 839.
Ullmanns, vol. 14, p. 703.
Ullmanns, vol. 20, pp. 495-496.

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