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Bottom price Water Based Polyurethane Dispersion - Synthesis Of UV Curable Waterborne Polyurethane Acrylate Coatings – JIYU
Bottom price Water Based Polyurethane Dispersion - Synthesis Of UV Curable Waterborne Polyurethane Acrylate Coatings – JIYU Detail:
Synthesis Of Waterborne Polyurethane Acrylate
The oligomer in uv-wpua coating is wpua, which is the main part of the coating. Wpua is generally formed by reaction of polyisocyanate, diol and hydroxyl acrylate. Isocyanates include aromatic isocyanates, aliphatic isocyanates and alicyclic isocyanates, which affect the rigidity, weather resistance and yellowing resistance of wpua. Diols mainly include polyether diols and polyester diols, which affect the tensile strength, softness, heat resistance and hydrolysis resistance of wpua.
The – NCO group in the polyisocyanate reacts with the hydroxyl group of the diol to form an oligomer with isocyanate groups at both ends. 2. 2,2-dihydroxymethylpropionic acid (DMPA) is used as the diol to introduce hydrophilic groups into the oligomer, and 1,4-butanediol (BDO) is added for chain extension; 3. Hydroxyethyl acrylate (HEA) was used to introduce photo active groups containing unsaturated double bonds for UV curing. After the three-step reaction is completed, triethanolamine (teoa) is added for neutralization reaction, and finally water is added to emulsify it into lotion.
Other scholars have synthesized uv-wpua with excellent performance by using synthetic raw materials such as Polyhexylene glycol, isophorone diisocyanate, PETA, and dimethylbutyric acid (DMBA). Three kinds of wpua were synthesized from the prepared polyacrylate with carboxyl group in side chain, polyether polyol, isophorone diisocyanate and hydroxyethyl acrylate. After comprehensive investigation of physical test and application test, it is considered that the comprehensive performance of polyether wpua is better. Using toluene diisocyanate, polyhexanediol, 2,2-dihydroxymethylpropionic acid and hydroxyethyl methacrylate as raw materials, prepolymer was first synthesized, then triethylamine was added as neutralizing agent, and water was used as chain extender to disperse in water to form stable wpua lotion.
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Our company sticks to the principle of "Quality is the life of the company, and reputation is the soul of it" for Bottom price Water Based Polyurethane Dispersion - Synthesis Of UV Curable Waterborne Polyurethane Acrylate Coatings – JIYU , The product will supply to all over the world, such as: Johor, UK, UAE, Our items are exported worldwide. Our customers are always satisfied with our reliable quality, customer-oriented services and competitive prices. Our mission is "to continue to earn your loyalty by dedicating our efforts to the constant improvement of our merchandise and services in order to ensure the satisfaction of our end-users, customers, employees, suppliers and the worldwide communities in which we cooperate".
Our company is named Jiangxi Jiyu New Material Co.,ltd. It is specialized in research, manufacturing and selling of Hydrophilic Chain-Extending Agent. For example, 2,2-BIS(Hydroxymethyl) propionic Acid (DMPA) and 2,2-BIS(Hydroxymethyl) butyric acid (DMBA). DMPA and DMBA are widely used in manufacturing of water-based paint, water-based tackiness agent, water-based printing ink and water-based leather finishing agent.
By Margaret from Myanmar - 2018.12.05 13:53
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By Gloria from Austria - 2017.01.28 18:53
