Water paint solidified by ultraviolet light, preparation method and application

[0034] Example 1

[0035] Recipe 1:

[0036] Diphenylmethane diisocyanate 6%

[0037] Dimethylolpropionic acid 5%

[0038] Polypropylene glycol 200 18%

[0039] Hydroxyethyl acrylate 6%

[0040] Triethanolamine 8%

[0041] Benzophenone 2%

[0042] Water 55%

[0043] Coating production method:

[0044] 1. Preparation of high molecular polymer:

[0045] (1) Under normal pressure, add the measured amount of diphenylmethane diisocyanate, dimethylolpropionic acid, polypropylene glycol 200, and hydroxyethyl acrylate into a three-necked reaction flask according to the above formula. After stirring, the temperature is raised to 70°C. , React for 3 hours.

[0046] (2) Add triethanolamine to (1) and stir for 0.5 hour.

[0047] 2. Add water and benzophenone, stir evenly to obtain the coating.

[0048] Coating product appearance: semi-transparent and uniform liquid

[0049] Wettability: good wetting on the wood surface

[0050] Storage period: ≤30℃, one year

[0051] Curing time: ≤10 seconds

[0052] Example 2

[0053] Formulation 2:

[0054] Diphenylmethane diisocyanate 5%

[0055] Dimethylolpropionic acid 5%

[0056] Polypropylene glycol 400 15%

[0057] Hydroxyethyl acrylate 5%

[0058] Triethanolamine 8%

[0059] Benzophenone 2%

[0060] Water 60%

[0061] Coating production method:

[0062] 1. Preparation of high molecular polymer:

[0063] (1) Under normal pressure, add the metered amount of diphenylmethane diisocyanate, dimethylolpropionic acid, polypropylene glycol 400, and hydroxyethyl acrylate into a three-necked reaction flask according to the above formula. After stirring, the temperature is raised to 75 ℃, react for 3 hours.

[0064] (2) Add triethanolamine and stir for 0.5 hour.

[0065] 2. Add water and benzophenone, stir evenly to obtain the coating.

[0066] Coating product appearance: semi-transparent and uniform liquid

[0067] Wettability: good wetting on the wood surface

[0068] Storage period: ≤30℃, one year

[0069] Curing time: ≤10 seconds

[0070] Example 3

[0071] Recipe 3:

[0072] Toluene diisocyanate 8%

[0073] Dimethylolpropionic acid 5%

[0074] Polypropylene glycol 200 21%

[0075] Hydroxyethyl acrylate 4%

[0076] Triethanolamine 7%

[0077] Benzophenone 3%

[0078] Water 52%

[0079] Coating production method:

[0080] 1. Preparation of high molecular polymer:

[0081] (1) Under normal pressure, add the metered toluene diisocyanate, dimethylolpropionic acid, polypropylene glycol 200, and hydroxyethyl acrylate into a three-necked reaction flask according to the above formula. After stirring, the temperature is raised to 75°C, and the reaction is 3 hour.

[0082] (2) Add triethanolamine and stir for 0.5 hour.

[0083] 2. Add water and benzophenone and stir to obtain the coating.

[0084] Coating product appearance: semi-transparent and uniform liquid

[0085] Wettability: good wetting on the wood surface

[0086] Storage period: ≤30℃, one year

[0087] Curing time: ≤10 seconds.