CPC C09D 5/022 (2013.01) [C09D 183/04 (2013.01)] | 17 Claims |
1. A process of making a silicone-in-water emulsion comprising
i) contacting at least one silicone with at least one organic non-polar solvent to obtain a solution;
ii) adding at least one anionic surfactant selected from the group consisting of metal salts of monoalkyl sulfosue metal salts of dialkyl sulfosuccinates, metal salts of alkyl sulfates, metal salts of alkyl ether sulfates, metal salts of olefin sulfonates, metal salts of linear alkyl benzene sulfonates, alkoxylated alkyl polyglycol ether phosphates, metal salts of alkoxylated alkyl polyglycol ether phosphates, metal salts of alkyl phosphate esters, metal salts of alkyl ether phosphates, and metal salts of alkyl-aryl ether phosphates to the solution obtained in step i) to obtain a mixture;
iii) adding water under shear, applied to the mixture obtained in step ii), to obtain a silicone-in-water emulsion; and
iv) removing the at least one organic non-polar solvent,
wherein the silicone-in-water emulsion has a particle size distribution Dv50 in the range from ≥1 μm to ≤10 μm, determined according to dynamic light scattering technique with a fixed scattering angle of 90°;
wherein the at least one silicone has a viscosity in the range from ≥1.0 m2/sec to ≤30000 m2/sec at a temperature of 25° C., according to DIN 53019, and
wherein the particle size distribution Dv90 of the silicone-in-water emulsion is in the range from ≥0.1 μm to ≤25 μm determined according to dynamic light scattering technique with a fixed scattering angle of 90°.
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