Mannich type compounds as antioxidants

Details Mannich type compounds as antioxidants Mannich type compounds as antioxidants

1992-12-07

1994-08-16

Howard, Jacqueline V.

Compositions

Electrolytes for electrical devices

252 5150R, 564390, C10M15916

Patent

active

053384695

ABSTRACT:
A combination of Mannich type reaction products of ethoxylated alkylated phenol, and alkylated arylamine possess excellent antioxidant properties. The presence of alkylated phenol in the structure is believed to provide a synergistic antioxidant activity with the aromatic amine. Presence of the alkylated aromatic moiety is believed to provide enhanced lubricant solubility compared to unalkylated diphenylamine type antioxidants. Application of these synergistic mixtures of additives and synthetic base stocks in premium automotive and industrial lubricants will significantly enhance stability and extend service life.

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patent: 5043086 (1991-08-01), Blain et al.
patent: 5089156 (1992-02-01), Chrisope et al.

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