Polyacrylate-modified polyurethane aqueous coating emulsion with high water pressure resistance and preparation method thereof
A technology of polyacrylate and polyurethane, which is applied in the direction of textiles, papermaking, and fiber treatment, etc. It can solve the problem of unsatisfactory hand feel, cold resistance, fastness, water pressure, unsatisfactory comprehensive performance of polyacrylate emulsion, solvent resistance, poor cold resistance, etc. problems, to achieve the effect of good bonding fastness, increased rigidity, and good washability
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Example Embodiment
[0029] Example 1
[0030] Raw material weight ratio:
[0031] (A) isophorone diisocyanate (IPDI) 50, (B) dimethylolbutyric acid (DMBA) 6, (C) polybutadiene diol (molecular weight 2000) 40, (D) neopentyl diol Alcohol 6, (E) isophorone diamine 6, (F) triethylamine 4, (G) deionized water 311, (H) styrene 15, (I) butyl acrylate 50, (J) methyl Hydroxyethyl acrylate 3, (K) amine persulfate 0.5;
[0032] Preparation:
[0033] Add isophorone diisocyanate (A), dimethylol butyric acid (B), polybutadiene diol (C), and neopentyl glycol (D) into the reaction kettle, and the temperature rises to 70-100°C to react After 3 hours, the temperature was lowered to 40-60°C, butyl acrylate (I), styrene (H), and hydroxyethyl methacrylate (J) were added, and the mixture was stirred at 40-60°C for 1 hour, and then three Ethylamine (F) was reacted at 40-60°C for 0.5-1 hour, deionized water (G) was added for high-speed dispersion for 20 minutes, isophorone diamine (E) was added and reacted...
Example Embodiment
[0035] Example 2
[0036] Raw material weight ratio: (A) isophorone diisocyanate (IPDI) 70, (B) dimethylol butyric acid (DMBA) 7, (C) polybutadiene glycol (molecular weight 3000) 50, ( D) neopentyl glycol 6, (E) isophorone diamine 8, (F) triethylamine 4.8, (G) deionized water 240, (H) styrene 30, (I) butyl acrylate 40, (J) hydroxyethyl methacrylate 5, (K) potassium persulfate 0.8; preparation method is with embodiment 1, obtains product.
[0037] Due to the large amount of styrene in the raw material ratio, the product of this example has high water pressure resistance and good washing resistance.
Example Embodiment
[0038] Example 3
[0039] Raw material weight ratio: (A) isophorone diisocyanate (IPDI) 70, (B) dimethylol butyric acid (DMBA) 10, (C) polybutadiene glycol (molecular weight 1000) 30, ( D) neopentyl glycol 6, (E) isophorone diamine 5.5, (F) triethylamine 6.8, (G) deionized water 231, (H) styrene 15, (I) butyl acrylate 50, (J) hydroxyethyl methacrylate 10, (K) potassium persulfate 0.5; the preparation method is the same as that in Example 1 to obtain the product.
[0040] Due to the large amount of dimethylolbutyric acid in the raw material components, the product of this example has strong hydrophilicity, good emulsion state and good stability; the amount of hydroxyethyl methacrylate is large, the crosslinking degree is enhanced, and the fastness is improved. best degree.
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