Patent ID: 11912953
Assignee: PETROLIAM NASIONAL BERHAD (PETRONAS)
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 11:
12. A lubricating oil composition according to claim 1, wherein the one or more cations comprise a substituted quaternary imidazolium cation comprising at least one amide group, or one or more cations selected from the following structures:, , wherein at least one of R1, R2, R3 and R4 have the formula —R5—N(R7)—(C═O)R6 or —R5(C═O)—N(R7)—R6, wherein R5 and R6 are as defined in claim 11, and wherein R7 is selected from H; a C1 to C30 straight chain or branched alkyl or alkenyl group; a C3 to C6 cycloalkyl group; a C1 to C30 arylalkyl group; a C1 to C30 alkylaryl group; an aryl group; or any two respective R6 groups combine to form an alkylene chain —(CH2)q— wherein q is from 3 to 6; wherein R5 and/or R6 are optionally substituted by one to three groups selected from: C1 to C4 alkoxy, C2 to C8 alkoxyalkoxy, C3 to C6 cycloalkyl, —OH, —NH2, —SH, —CO2(C1 to C6)alkyl, and —OC(O)(C1 to C6)alkyl;
and wherein the other of R1, R2, R3 and R4 that are not as defined above are independently selected from C1 to C30 straight chain or branched alkyl and alkenyl groups such as C1 to C10 alkyl or alkenyl groups; C3 to C6 cycloalkyl groups; C1 to C30 arylalkyl groups; C1 to C30 alkylaryl groups; aryl groups; or any two of R1, R2, R3 and R4 combine to form an alkylene chain —(CH2)q— wherein q is from 3 to 6; wherein any one or more of said straight or branched chain alkyl and alkenyl groups, cycloalkyl groups, arylalkyl groups, alkylaryl groups; aryl groups or alkylene chains is optionally substituted by one to three groups selected from: C1 to C4 alkoxy, C2 to C8 alkoxyalkoxy, C3 to C6 cycloalkyl, —OH, —NH2, —SH, —CO2(C1 to C6)alkyl, and —OC(O)(C1 to C6)alkyl.