Surface modified pigment particles, method of preparation and application thereof
A pigment particle, surface modification technology, applied in the direction of application, nanotechnology for materials and surface science, thin material processing, etc., can solve problems such as increased viscosity, low interfacial surface tension, etc.
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example 1
[0260] Prepare a black pigment dispersion in the following manner: 100 parts 160 (pigment carbon black based on the Degussa gas black process and obtained from Orion Engineered Carbons, Frankfurt am Main, Germany), 500 parts deionized (DI) water Mixed with 50 parts of isopropanol followed by homogenization at ambient temperature using a high speed mixer at 3000 RPM for one hour. Separately, the surface modification compound was prepared by mixing 89.0 parts L-200 (a hydrophilic polyether monoamine obtained from Huntsman International LLC, The Woodlands, Texas (TX)) and 11.0 parts of 3-isocyanatopropyl triethyl Oxysilane (available from Gellest Corporation, Morrisville, PA) was mixed for one hour at ambient temperature, then the reaction mass was heated to 80°C for 0.5 hour and stirred at this temperature for two hours. The resulting surface-modifying additive was then added to the pigment dispersion, and the slurry was mixed at 80°C for two hours, and then dried in a Büchi...
example 2
[0265] A red pigment dispersion was prepared by mixing 22.5 parts of PR177 (Pigment Red 177 from DIC Corporation), 160 parts of DI water, and 7 parts of 35% hydrochloric acid for one hour at ambient temperature. Then 11 parts of sodium nitrite as a 38.5% aqueous solution were added dropwise to the slurry. After all of the sodium nitrite was added, the pigment slurry was heated to 70°C and stirred for one hour, and the pigment was recovered via filtration. The pigment was washed with DI water until the conductivity of the filtrate was below 20 μS / cm at pH=7.5. The pigment press cake was then reslurried in DI water at ambient temperature and stirred for one hour. Separately, the 6.9 servings L-200 (obtained from Huntsman International LLC, The Woodlands, Texas) and 0.6 parts of 3-isocyanatopropyltriethoxysilane (obtained from Gellester Corporation, Morrisville , Pennsylvania) was mixed for one hour at ambient temperature, then the reaction mass was heated to 80°C for 0.5 hou...
example 3
[0271] Prepare a black pigment dispersion by: mixing 115 parts 160 (pigment carbon black obtained from Orion Engineered Carbons, Frankfurt, Germany), 100 parts n-heptane, 50 parts DI water, and 390 parts isopropanol, which were mixed at ambient temperature using a high-speed mixer at 3000 RPM Mix and homogenize for one hour. Separately, the 154.0 parts PIBA 03 (molecular weight M n is about 1000g / mol and has NH 2 Polyisobutene functionalized to the extent of about 75% by weight, supplied by BASF AG (Ludwigshafen, Germany) as a concentrate of about 65% by weight in aliphatic hydrocarbon) and 14.5 parts of 3-isocyanate groups Propyltrimethoxysilane (obtained from Gallust Corporation, Morrisville, PA) was mixed for one hour at ambient temperature, then the reaction mass was heated to 100°C for 0.5 hour and stirred at this temperature for two hours . The resulting surface active additive was then added to the pigment dispersion, and the mixture was mixed at 80°C for two hou...
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