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

Claim 6:
7. A lubricating oil composition according to claim 1, wherein the one or more cations comprise one or more cations selected from a quaternary ammonium cation, a quaternary phosphonium cation, a quaternary sulphonium cation, or any combination thereof, optionally wherein the one or more cations comprise one or more cations selected from the following structures:, , wherein R1, R2, R3 and R4 are independently selected from C1 to C30 straight chain or branched alkyl and 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 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.