Multiphase particle, manufacturing process and use thereof

A manufacturing process for a multiphase particle, comprising at least the following steps:

• A reaction step:
• reacting at least one polyfunctional organic monomer (for example an organic compound having two or more isocyanate (—NCO) groups per molecule, especially for example at least one selected from a polyisocyanate, a polyurethane prepolymer and a polyurea prepolymer, especially at least one selected from a C4+ aliphatic polyisocyanate, a C4+ cycloaliphatic polyisocyanate, an aromatic polyisocyanate, a polyurethane prepolymer derived from at least one of these polyisocyanates, and a polyurea prepolymer derived from at least one of these polyisocyanates, especially at least one selected from an C4+ aliphatic diisocyanate, a C4+ cycloaliphatic diisocyanate, an aromatic diisocyanate, a polyurethane prepolymer derived from at least one of these diisocyanates, and a polyurea prepolymer derived from at least one of these diisocyanates, especially at least one selected from toluene diisocyanate, 4,4′-diphenylmethane diisocyanate, 4,4′-dicyclohexylmethane diisocyanate, isophorone diisocyanate, hexamethylene diisocyanate, 1,4-cyclohexane diisocyanate, naphthalene diisocyanate, a polyurethane prepolymer derived from at least one of these diisocyanates, and a polyurea prepolymer derived from at least one of these diisocyanates, especially at least one selected from 4,4′-diphenylmethane diisocyanate, a polyurethane prepolymer derived from the diisocyanate, and a polyurea prepolymer derived from the diisocyanate, especially a polyurethane prepolymer derived from 4,4′-diphenylmethane diisocyanate) and at least one polyfunctional inorganic monomer exhibiting a chemical reaction activity to the polyfunctional organic monomer (for example an inorganic compound having 2 or more-OH groups per molecule and/or a precursor thereof, especially for example at least one selected from a silica sol, an alumina sol, a zirconium sol, a titanium sol, a silicate ester, an aqueous silicate ester solution, a silicate salt, an aqueous silicate salt solution, an aluminate salt, an aqueous aluminate salt solution, a titanate ester, an aqueous titanate ester solution, a zirconate ester, an aqueous zirconate ester solution and water, especially at least one selected from silica sol and an aqueous silicate salt solution, especially an aqueous silicate salt solution, for example water glass) in presence of optionally at least one inorganic nanoparticle (for example a nanoparticle consisting essentially of an inorganic substance, for example at least one selected from calcium carbonate nanoparticle, silica nanoparticle and hydrotalcite nanoparticle, especially calcium carbonate nanoparticle, more especially heavy calcium carbonate nanoparticle) and optionally at least one polyfunctional reactive hydrogen organic compound (for example an organic compound containing two or more reactive hydrogen atoms per molecule, especially for example at least one selected from a polyamine, a polycarboxylic acid, a polyphenol, a polythiol and a polyol, especially at least one selected from a polyether polyol and a polyester polyol, especially a polyether polyol, preferably the polyether polyol has a number-average molecular weight of 500-8000, preferably 1000-6000 and a hydroxy functionality of 2-3, in particular preferably the polyether polyol is at least one selected from a polytetrahydrofuran diol and a polypropylene oxide polyol, in particular preferably a polypropylene oxide polyol or a polypropylene oxide glycol, especially at least one selected from polypropylene oxide glycol 1000, polypropylene oxide glycol 2000, polypropylene oxide glycol 3000, polypropylene oxide glycol 5000 and polypropylene oxide glycol 6000), in presence of a catalyst (for example at least one selected from a carboxylate salt, a metal alkyl compound, a quaternary ammonium salt and a tertiary amine, especially at least one selected from stannous octoate, potassium carboxylate and dibutyl tin dilaurate) or in absence of a catalyst to obtain an organic-inorganic composite material in a solid form, and
• A comminution step:
• comminuting the organic-inorganic composite material to obtain the multiphase particle, wherein the average particle size of the multiphase particle is at least 0.1 mm (preferably at least 0.2 mm, at least 0.35 mm, at least 0.5 mm, at least 0.75 mm or at least 0.8 mm), at most 100 mm (preferably at most 50 mm, at most 20 mm, at most 10 mm, at most 5 mm, at most 2 mm, at most 1.2 mm or at most 1.0 mm).