Patent ID: 11905485
Assignee: TOTAL MARKETING SERVICES
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. 1. A method for reducing and/or limiting and/or preventing and/or delaying the formation of deposits or for reducing the deposits already present on internal parts of a marine combustion engine comprising applying a guanidinium-based ionic liquid or a lubricant composition comprising the guanidinium-based ionic liquid to the internal parts of the marine combustion engine,
wherein the guanidinium-based ionic liquid corresponds to formula (I):

[CAT+][X−]   (I)

wherein
[X−] represents one or more anionic species, [CAT+] is selected from cations of formula (II):, wherein:
R1, R2 are each independently selected from H, a C1-C30 linear or branched alkyl group, a C3-C8 cycloalkyl group, a C6-C12 aryl group, or a C7-C12 aralkyl group, optionally substituted by a functional group comprising an oxygen and/or a nitrogen atom,
R3, R4, R5, R6 are each independently selected from a C1-C30 linear or branched alkyl group, a C3-C8 cycloalkyl group, a C6-C12 aryl group, or a C7-C12 aralkyl group, optionally substituted by a functional group comprising an oxygen and/or a nitrogen atom,
or any two of (R3, R4) or (R5, R6) form together a methylene chain —(CH2)p-, with p is an integer from 2 to 5.