Manufacturing method of one-pack type water-soluble polyurea resin and one-pack type water-soluble polyurea resin product manufactured by the same
A technology for the production of water-soluble polyurea resin, which is applied to the manufacture of one-component water-soluble polyurea resin and the field of one-component water-soluble polyurea resin products made from it, and can solve the problems such as difficulty in forming a coating film
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[0012] The following is a production example of a one-pack type water-soluble polyurea resin.
[0013] 1. Add 70kg of polypropylene glycol (polyol) with a molecular weight of 2000 to the fully dry reactor. At this time, the temperature of the reactor was maintained at 90°C.
[0014] 2. After heating the polypropylene glycol to 80°C, add 5kg of DMPA (dimethylolpropionic acid) and heat until the raw material temperature reaches 80°C.
[0015] 3. After the temperature reaches 80°C, add 13kg of MDI and heat the raw material to 110°C. At this point, the total reaction time does not exceed 50 minutes.
[0016] 4. Add 10 kg of IPDI, add a catalyst, and react for 60 minutes. At this time, the raw material temperature is maintained at 70-90°C.
[0017] 5. After adding triethanolamine [TEA (triethanolamine)], the reaction was carried out for about 20 minutes. At this time, in order to eliminate odors such as acetone, amine, ammonia, and solvent components inside the reactor, air is...
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