LUBRICANT COMPOSITION

Japanese Patent JP3613530

B2

PURPOSE: To obtain a lubricant compsn. suitable esp. for an internal combustion engine by compounding a base oil with zinc dialkyldithiophosphates, calcium sulfonate, calcium salicylate, and a molybdenum oxysulfide dithiocarbamate.
CONSTITUTION: This lubricant compsn. is obtd. by compounding a base oil with zinc dialkyldithiophosphates comprising a zinc dialkyldithiophosphate having secondary alkyl groups and a zinc dialkyldithiophosphate having primary alkyl groups in such amts. that the former dialkyldithiophosphate contains 50-100wt.% of the total phosphorus and the latter contains 50-0wt.% and that the total phosphorus content is 0.04-0.12wt.% of the compsn., 1.0-3.0wt.% (based on the compsn.) calcium sulfonate, 0.3-2.5wt.% (based on the compsn.) calcium salicylate, and a molybdenum oxysulfide dithiocarbamate having an 8-23C hydrocarbon group in an amt. of molybdenum of 50-2,000ppm. The total base value of the compsn. is adjusted to 2-13.

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Katsuya Arai
Satoshi Asano
Sadao Wada

JP14867093A

January 26, 2005

May 27, 1993

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TonenGeneral Sekiyu KK

C10M141/12; C10M163/00; C10M169/04; C10N10/04; C10N10/12; C10N30/06; (IPC1-7): C10M141/12

JP59122597A
JP5927994A
JP41293A
JP646094A
JP3106995A

Kenji Kawabi

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