Dithiophosphoric acid derivatives as lubricant additives

Details Dithiophosphoric acid derivatives as lubricant additives Dithiophosphoric acid derivatives as lubricant additives

C - Chemistry, Metallurgy

07

F

C07F 9/165 (2006.01) C07F 9/18 (2006.01) C07F 9/547 (2006.01) C07F 9/655 (2006.01) C10M 137/10 (2006.01) C10M 167/00 (2006.01)

Patent

CA 2097384

There are disclosed compounds of formula I (see formula I) wherein R1 and R2 are each independently of the other C3-C18alkyl, C5-C12cycloalkyl, C5-C6cycloalkylmethyl, C9-C10bicycloalkylmethyl, C9-C10tricycloalkylmethyl, phenyl, C7-C24alkylphenyl or, taken together, are(see formula II) R3 is hydrogen or methyl, A is~ (see formula III and IV) -CH2[CH(OH)]m CH2OH, R4 is hydrogen or C1-C6alkyl, and R5 is a 5- or 6-membered saturated heterocyclic ring, R6 is hydrogen or methyl, n is an integer from 1 to 11 and m is an integer from 0 to 4. These compounds are particularly suitable for use as additives for lubricant compositions, hydraulic fluids and machining fluids.

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