Polymeric-inorganic nanoparticle compositions, manufacturing process thereof and their use as lubricant additives

A polymeric-inorganic nanoparticle composition, obtained by milling a mixture, the mixture comprising one or more intercalation compound (A) and one or more polymer compound (B),

• (A) wherein the one or more intercalation compound comprises a metal chalcogenide having molecular formula MX2, where M is a metallic element selected from the group consisting of titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), zirconium (Zr), niobium (Nb), molybdenum (Mo), technetium (Tc), ruthenium (Ru), rhodium (Rh), palladium (Pd), silver (Ag), cadmium (Cd), hafnium (Hf), tantalum (Ta), tungsten (W), rhenium (Re), osmium (Os), iridium (Ir), platinum (Pt), gold (Au), mercury (Hg) and combinations thereof, and X is a chalcogen element selected from the group consisting of sulfur (S), selenium (Se), tellurium (Te), oxygen (O) and combinations thereof;
• and
• (B) wherein the one or more polymer compound is obtainable by polymerizing a monomer composition comprising:
• a) one or more functional monomer as component a) selected from the list consisting of:
• a1) hydroxyalkyl (meth)acrylates;
• a2) aminoalkyl (meth)acrylates and aminoalkyl (meth)acrylamides;
• a3) nitriles of (meth)acrylic acid and other nitrogen-containing (meth)acrylates;
• a4) aryl (meth)acrylates, where the acryl residue in each case can be unsubstituted or substituted up to four times;
• a5) carbonyl-containing (meth)acrylates;
• a6) (meth)acrylates of ether alcohols;
• a7) (meth)acrylates of halogenated alcohols;
• a8) oxiranyl (meth)acrylate;
• a9) phosphorus-, boron- and/or silicon-containing (meth)acrylates;
• a10) sulfur-containing (meth)acrylates;
• a11) heterocyclic (meth)acrylates;
• a12) maleic acid and maleic acid derivatives;
• a13) fumaric acid and fumaric acid derivatives;
• a14) vinyl halides;
• a15) vinyl esters;
• a16) vinyl monomers containing aromatic groups;
• a17) heterocyclic vinyl compounds;
• a18) vinyl and isoprenyl ethers;
• a19) methacrylic acid and acrylic acid,
• and one or both of the components selected from the group consisting of:
• b) one or more alkyl (meth)acrylate monomer;
• and
• c) the reaction product of one or more ester of (meth)acrylic acid and one or more hydroxylated hydrogenated polybutadiene having a number-average molecular weight (Mn) of 500 to 10,000 g/mol, and
• wherein the weight ratio of the one or more intercalation compound (A) to the one or more polymer compound (B) is from 20:1 to 1:5.