Aqueous dispersions of acrylate-siloxane copolymer particles
A water-based dispersion and acrylate technology, applied in silicon organic compounds, compounds of group 4/14 elements of the periodic table, organic chemistry, etc., can solve reactor fouling, low process efficiency, poor final coating performance, etc. question
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Embodiment 1
[0077] Example 1 - Preparation of Aqueous Dispersions of Hybrid Polymer Particles Using MM'-ALMA
[0078] Deionized water (50.0 g) and Polystep B-5-N sodium lauryl sulfate (SLS, 0.5 g, 28.0% in water) were added to a 500 mL 4-neck equipped with condenser, overhead stirrer and thermocouple in a round bottom flask. The contents of the reactor were stirred at 250 rpm and 2 Heat to 88°C. In a separate vessel, an overhead mixer was used to prepare a mixture containing deionized water (60.0 g), SLS (4.7 g, 28.0% in water), BA (45.0 g), MMA (45.0 g), MAA (1.0 g), A single solution of MM'-ALMA (10.0 g), n-dodecylmercaptan (n-DDM, 0.05 g), ammonium hydroxide solution (0.36 g, 28% active substance in water) and sodium acetate (0.3 g) Body emulsion (ME) was then treated with a hand-held homogenizer (Tissue Tearor, model 985370, Biospec Products Inc.) for 1 min to produce ME with an average droplet size of about 2-15 μm as determined by light microscopy. A portion of ME (1.75 g) was a...
Embodiment 2
[0079] Example 2 - Preparation of Aqueous Dispersions of Hybrid Polymer Particles Using MM'-1EO-ALMA
[0080] Example 1 was repeated except that the monomer emulsion was prepared by mixing deionized water (60.0 g), SLS (4.7 g, 29% actives in water), BA (45.0 g), MMA (45.0 g), MAA (1.0g), MM'-1EO-ALMA (10.0g), n-DDM (0.05g), ammonium hydroxide solution (0.36g, 28% active substance in water) and sodium acetate (0.30g) to prepare . The final aqueous particle dispersion had 40% solids, a z-average particle size of 100 nm, 6300 ppm coagulum and as passed 1 Quantitative incorporation of MM'-1EO-ALMA monomer as determined by H NMR spectroscopy. The level of residual MM'-1EO-ALMA in the samples was found to be <100 ppm as determined by UHPLC.
Embodiment 3
[0081] Example 3 - Preparation of Aqueous Dispersions of Hybrid Polymer Particles Using MD'M-ALMA
[0082] Example 1 was repeated except that the monomer emulsion was prepared by mixing deionized water (60.0 g), SLS (4.7 g, 29% actives in water), BA (45.0 g), MMA (45.0 g), MAA (1.0g), MM'-1EO-ALMA (10.0g), n-DDM (0.05g), ammonium hydroxide solution (0.36g, 28% active substance in water) and sodium acetate (0.30g) to prepare . The final aqueous particle dispersion had 40% solids, a z-average particle size of 104 nm, coagulum of 7600 ppm and as passed 1 Quantitative incorporation of MD'M-ALMA monomer as determined by H NMR spectroscopy. The level of residual MD'M-ALMA in the samples was found to be <30 ppm as determined by UHPLC.
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