Synthetic method and application of a kind of aspartame resin, water-based aspartame polyurea
A synthesis method and polyurea technology, applied in polyurea/polyurethane coatings, organic chemistry, coatings, etc., can solve problems such as low viscosity of aspartame resin
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Embodiment 1
[0028] The present embodiment provides a kind of aspartame resin, as shown in the following formula E1:
[0029]
[0030] The invention provides a method for synthesizing water-based aspartic polyurea with E1, which is specifically as follows:
[0031] 446 grams of E1 (1 mol) were added to the three-necked flask, 100 mL of acetone was added, the temperature was raised to 60° C., 22.3 grams of sodium vinyl sulfonate was added dropwise to the above system, and the reaction was carried out at this temperature for 8 hours. Evaporate the solvent, add 533 grams of IPDI to the above-mentioned aspartame resin and add it to the there-necked flask by metering, and stir the reaction at a high speed for 10 min; then add 1000 grams of metered water in the there-necked flask, disperse and emulsify 5min for 5min to obtain water-based polyurea emulsion, which is this The examples provide aqueous aspartic polyureas.
[0032] The solid content of the aqueous aspartate polyurea obtained in t...
Embodiment 2
[0034] The present embodiment provides a kind of aspartame resin, as shown in the following formula E2:
[0035]
[0036] The invention provides a method for synthesizing water-based aspartic polyurea with E2, which is specifically as follows:
[0037] 582 grams of E2 (1 mol) were added to the three-necked flask, 200 mL of acetone was added, the temperature was raised to 60° C., 46.6 grams of potassium vinylsulfonate was added dropwise to the above system, and the reaction was carried out at this temperature for 8 hours. Evaporate the solvent, add 403 grams of HDI into the there-necked flask by metering and add 403 grams of HDI into the there-necked flask, and stir and react at a high speed for 10min; then in the there-necked flask, add 661 grams of metered water to disperse and emulsify 5min for 5min to obtain water-based polyurea emulsion, which is this implementation. Examples include water-based aspartic polyureas.
[0038] The solid content of the aqueous aspartate po...
Embodiment 3
[0040] The present embodiment provides a kind of aspartame resin, as shown in the following formula E3:
[0041]
[0042] The invention provides a method for synthesizing water-based aspartic polyurea with E3, which is specifically as follows:
[0043] 554 grams of E3 (1 mol) was added to the three-necked flask, 300 mL of acetone was added, the temperature was raised to 60° C., 46.6 grams of sodium vinyl sulfonate was added dropwise to the above system, and the reaction was carried out at this temperature for 8 hours. Evaporate the solvent, add 418 grams of TDI to the above-mentioned aspartame resin and add it to the there-necked flask by metering, and stir the reaction at a high speed for 10min; then add 1528 grams of metered water in the there-necked flask, disperse and emulsify for 5min, and obtain the water-based polyurea emulsion, which is this implementation. Examples include water-based aspartic polyureas.
[0044] The solid content of the aqueous aspartate polyurea...
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