Preparation method of furniture cleaning, sterilizing and glazing aerosol
A technology of phosgene and furniture, which is applied in the direction of paint containing biocide, liquid bottling, coating, etc., can solve the problems of inaccurate canning accuracy, and the glazing effect of glazing aerosol is not lasting. Uniformity, solving the effect of inaccurate canning accuracy and reducing migration
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Embodiment 1
[0046] Fluorinated branched compounds are made by the following steps:
[0047] B1. Dissolve 0.1mol of p-hydroxymethylbenzaldehyde and 0.22mol of phenol in glacial acetic acid, and after cooling to 0°C, add dropwise 10mL of a mixed solution with a mass fraction of 98% concentrated sulfuric acid and 30mL of glacial acetic acid while stirring, drop After the addition, the reaction was continued at 0°C for 72 hours, then poured into frozen ice water, stirred for 1 hour, filtered, washed with water until the filtrate was neutral, and dried in vacuo to constant weight to obtain 4-hydroxymethyl-4',4'- Dihydroxytriphenylmethane;
[0048] B2. Add 0.12mol of 4-hydroxymethyl-4',4'-dihydroxytriphenylmethane, 100mL of glacial acetic acid, and 4mL of p-toluenesulfonic acid into a three-necked flask with a condensing reflux tube and a stirring magnet, and stir evenly. Use an oil bath to heat the temperature of the reaction system to 61°C. Under stirring, add 0.1 mol of perfluorovaleric aci...
Embodiment 2
[0050] Modified polyurethane resins are made through the following steps:
[0051] S1. Mix 2 mol of isophorone diisocyanate, 1 mol of polyester diol with a relative molecular weight of 1000 and 10 g of dibutyltin dilaurate evenly, and react in a water bath at 78° C. for 2 hours to obtain isocyanate group-terminated polyurethane;
[0052] S2. Under the protection of ammonia gas, mix 0.1mol of isocyanate-terminated polyurethane, 2.3g of dibutyltin dilaurate and 70mL of glacial acetic acid, and slowly add 0.21mol of Example 1 at 93°C with a constant pressure dropping funnel. Prepare 50 mL of glacial acetic acid solution of fluorine-containing branched compounds, and the dropping rate is 2 drops / second. After the dropwise addition, continue to react for 3 hours, flocculate with 100 mL of deionized water / methanol, and dry in a vacuum oven at 100°C for 24 hours. Modified polyurethane was obtained.
Embodiment 3
[0054] Modified polyurethane resins are made through the following steps:
[0055] S1. Mix 2 mol of toluene diisocyanate, 1 mol of polyester diol with a relative molecular weight of 1200 and 18 g of dibutyltin dilaurate evenly, and react in a water bath at 78° C. for 2 hours to obtain isocyanate group-terminated polyurethane;
[0056] S2. Under the protection of ammonia gas, mix 0.1mol of isocyanate-terminated polyurethane, 1.8g of dibutyltin dilaurate and 70mL of glacial acetic acid, and slowly add 0.22mol of Example 1 at 93°C with a constant pressure dropping funnel. Prepare 50 mL of glacial acetic acid solution of fluorine-containing branched compounds, and the dropping rate is 2 drops / second. After the dropwise addition, continue to react for 3 hours, flocculate with 100 mL of deionized water / methanol, and dry in a vacuum oven at 100°C for 24 hours. Modified polyurethane was obtained.
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