A guanidinium-based ionic liquid compound including a 1,1,3,3-tetramethylguanidinium cation and an alcoholate anion. A lubricant composition including it, and its use as a detergent and as anti-corrosion additive in a lubricant composition, in particular a marine lubricant.

An electrorheological composition has corrosion-inhibiting properties and contains at least one organic ionic compound as an electrolyte. Also disclosed are methods for the production thereof and the use thereof.

Carbodiimide for use as an additive in lubricants intended for drive device systems for improved elastomer compatibility

The present invention relates to a lubricant composition intended for a drive system, comprising at least one or more base oils, at least one carbodiimide additive and at least one basic organic additive improving TBN; as well as a process for lubricating a drive system using such a lubricating composition.

It also relates to the use of at least one carbodiimide additive in a lubricant composition intended for a drive system, to improve its compatibility with elastomers.

A lubricant additive for introduction into a AC/R system to improve lubricant miscibility and performance in the AC/R system.

The invention relates to compositions including esters of polyvalent alcohols that are esterified with fatty acids, partially unsaturated, from plant oils, and to the use thereof as cooling and insulating fluids for transformers.

Disclosed is a working fluid composition for a refrigerating machine, comprising a refrigerating machine oil comprising an ester of a polyhydric alcohol and a fatty acid, a carbodiimide compound, and a phosphorous compound, and at least one refrigerant selected from 1, 1, 1,2-tetrafluoroethane and 2,3,3,3-tetrafluoropropene, the fatty acid comprises at least one selected from fatty acids having 4 to 9 carbon atoms, and the carbodiimide compound and the phosphorus compound satisfy the conditions represented by the formula (1): $\begin{array}{cc}0.11\frac{\left(\frac{N_C}{M_C}.Math.W_C\right)}{\left(\frac{N_P}{M_P}.Math.W_P\right)}4.70& \left(1\right)\end{array}$
wherein, N.sub.c represents the number of carbodiimide groups per molecule of the carbodiimide compound, M.sub.c represents the molecular weight of the carbodiimide compound, W.sub.c represents the content of the carbodiimide compound, N.sub.p represents the number of phosphorus atoms per molecule of the phosphorus compound, M.sub.p represents the molecular weight of the phosphorus compound, and W.sub.p represents the content of the phosphorus compound.

Disclosed is a working fluid composition for a refrigerating machine, comprising a refrigerating machine oil comprising an ester of a polyhydric alcohol and a fatty acid, a carbodiimide compound, and a phosphorous compound, and at least one refrigerant selected from 1, 1, 1,2-tetrafluoroethane and 2,3,3,3-tetrafluoropropene, the fatty acid comprises at least one selected from fatty acids having 4 to 9 carbon atoms, and the carbodiimide compound and the phosphorus compound satisfy the conditions represented by the formula (1):

[00001]$\begin{array}{cc}0.11\frac{\left(\frac{N_C}{M_C}.Math.W_C\right)}{\left(\frac{N_P}{M_P}.Math.W_P\right)}4.70& \left(1\right)\end{array}$

wherein, N.sub.c represents the number of carbodiimide groups per molecule of the carbodiimide compound, M.sub.c represents the molecular weight of the carbodiimide compound, W.sub.c represents the content of the carbodiimide compound, N.sub.p represents the number of phosphorus atoms per molecule of the phosphorus compound, M.sub.p represents the molecular weight of the phosphorus compound, and W.sub.p represents the content of the phosphorus compound.

The present invention relates to an additive composition comprising: (A) at least one (per)fluoropolyether polymer [PFPE polymer.sub.add] comprising a (per)fluoropolyether chain [PFPE chain.sub.add] having a first chain end and a second chain end bonded to opposite sides of said PFPE chain.sub.add, wherein: the first chain end comprises a group of formula C(O)NR.sub.aR.sub.b, wherein R.sub.a and R.sub.b, each independently, are selected from: hydrogen, linear or branched C.sub.1-C.sub.6 alkyl group; the second chain end comprises a group selected from: C.sub.1-C.sub.6 (per)fluoroalkyl group, CF.sub.2C(O)CF.sub.3 and C(OH).sub.2CF.sub.3; C(O)NR.sub.aR.sub.b, wherein R.sub.a and R.sub.b, each independently, are selected from: hydrogen, linear or branched C.sub.1-C.sub.6 alkyl group; C(O)OR.sub.c, wherein R.sub.c is a linear or branched C.sub.1-C.sub.6 alkyl group; (B) 0.01-25.0 wt. %, based on the weight of component (A), of a fluorescent dye of formula (I) (e.g. a rhodamine dye). The present invention also relates to the use of the additive composition in admixture with hydrogenated or fluorinated lubricants. The additive composition is capable of imparting the lubricant with both anti-rust and fluorescence properties.