LUBRICATING OIL COMPOSITION

申请公布号：JPH04202398(A)

申请号：JP19900329885

申请日期：1990.11.30

申请公布日期：1992.07.23

申请人：

TONEN CORP

发明人：YOSHIMURA SHIGEHIKO;TAKEDA OSAMU;KUGIMIYA TAKANORI;IWATA OSAMI

分类号：C09K15/08;C09K15/14;C09K15/16;C09K15/24;C09K15/30;C09K15/32;C10M141/06;C10M141/08;C10M141/10;C10N30/10;C10N40/04;C10N40/08

主分类号：C09K15/08

摘要：PURPOSE:To obtain a lubricant composition especially useful for automatic gear, having extremely excellent oxidation stability by blending a base oil with three kinds of antioxidants such as phenolic antioxidant. CONSTITUTION:(A) A base oil composed of a mineral oil or synthetic oil having preferably 3-20cst viscosity at 100 deg.C is blended with (B) 0.5-6.0wt.%, (preferably 1.0-3.0wt.%) total amounts of (i) a phenolic antioxidant, (ii) a diphenylamine- based antioxidant and (iii) a phenylnaphthylamine-based antioxidant in the weight ratio of 1.0:1.5-6.0:0.8-2.5 (compound 1.0:3.5-5.0:1.0-2.0) to give the objective composition.

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