Lubricant formulations

Details Lubricant formulations Lubricant formulations

C - Chemistry, Metallurgy

10

M

253/106

C10M 133/12 (2006.01) C10M 135/00 (2006.01) C10M 141/08 (2006.01) C10M 141/10 (2006.01)

Patent

CA 2016838

Lubricant formulations Abstract Formulations containing A) a lubricant, for example an industrial oil or a lubricating oil for internal combustion engines, and, for example, B1) a mixture of diphenylamine compounds, containing 1 to 5 % by wt a) diphenylamine 8 to 18 % by wt b) 4-tert.-butyldiphenylamine 21 to 31 % by wt c) one or more of the compounds i) 4-tert.-octyldiphenylamine ii) 4,4'-di-tert.-butyldiphenylamine iii) 2,4,4'-tris-tert.-butyldiphenylamine, 20 to 31 % by wt d) one or more of the compounds i) 4-tert.-butyl-4'-tert.-octyldiphenylamine ii) 2,2'- or 2,4'-di-tert.-octyldiphenylamine iii) 2,4-di-tert.-butyl-4'-tert.-octyldiphenylamine and 15 to 29 % by wt e) of the compound i) 4,4'-di-tert.-octyldiphenylamine or the compounds i) 4,4'-di-tert.-octyldiphenylamine and iii) 2,4-di-tert.-octyl-4'-tert.-butyldiphenylamine, and C) at least one compound of the general formula I Image ( I), wherein R1 and R2 are idendcal or different and are C3-C9alkyl, C5-C10cycloalkyl or pinan-10-yl, and Q is -S-, -S-CH2-S- or -S-CH2-CH2-S-, and components B) and C) are present in a ratio by weight of B):C) of from 1:0.6 to 1:6. Such formulations exhibit good stability towards oxidative degradation.

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