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

Claim 4:
5. A lubricating oil composition according to claim 1, wherein the one or more Group 6 metal mononuclear metallate anions comprises one or more of the following ligands coordinated to the central metal atom of the anion: BH3, BF3, BCl3, BR3, ALMe3, SiF4, H, CR3, —CR═CR2, alkynyl, —COR, —C6H5, η-CH2CH═CH2, η-C5H5, CF3, C6F5, CH2CMe3, NR2, OR, —OOR, F, SiR3, —PR2, SR, Cl, GeR3, AsR2, SeR, Br, SnR3, I, CN, SCN, NCS, N3, OCN, NCO, OSO2R, ONO, ONO2, OClO3, OSiR3, Mn (CO)5, Fe(η-C5H5)(CO2), Mo(η-C5H5)(CO)3, Au(PPh3), HgCl, —SCH2CH2S—, oxalate, o-quinones, —(S)2—, SO4, CO3, —(O)2—, metallacycles —(CH2)n—, where n=2, 3 or 4, ═CR2, ═NR, ═O, ═S, ═C═CR2, NH3, NR3, OH2, OR2, PR3, P(OR)3, SR2, SeR2, AsR3, CO, H2C═CH2, R2C═CR2, RC═CR, S═CR2, N2, PF3, tetrahydrofuran, Et2O, DMSO, RNC, RCN, pyridine, dimethyl sulfoxide, nitrogen, η-C3H5, acetylacetone, dimethylglyoxime, η-acetato, η-O2CR, η-S2CNR2, η-S2PR2, NH2CH2CO2—, BF4, BH4, NO, NR2, η-C4H4, NR, η-C4H4, bipyridyl, o-phenanthroline, ethylenediamine, RS(CH)2SR, diphosphines, N(CH2COO)3, η-C5H5, dienyls, 1,5,-diazacyclooctane-N,N′-diacetate, η-benzene, (η-arene), η-C7H8, RSi(CH2PMe2)3, η-C7H7, ethylenediaminetetraacetic acid, η-C5H4(CH2)3NR, η-C5H4(CH2)3NR, η-C5H4(CH2)3N═, P(bipyridyl)3, [FB(ONCHC5H3)3P], wherein R is hydrocarbyl, alkyl or alkenyl, optionally the one or more Group 6 metal mononuclear metallate anions is of the formula:, , wherein M=Cr, Mo, W or Sg; wherein at least one X═S, wherein the other X are independently selected from O, S, Se or Te, and wherein each R is independently selected from alkyl, alkenyl, aryl, alkylaryl or arylalkyl moieties, such as C1 to C10 alkyl, C1 to C10 alkenyl, C1 to C10 aryl, C1 to C10 alkylaryl, or C1 to C10 arylalkyl moieties, wherein said alkyl, alkenyl, aryl, alkylaryl or arylalkyl moieties 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.