| 摘要 |
Aqueous, radiation-curable urethane acrylate emulsion and a method of preparing, wherein the urethane acrylate emulsion is prepared by: mixing a cyclic polyisocyanate with water at a ratio of NCO equivalents to H2O moles of about 10-20:0-1, to form an NCO-containing urea polyisocyanate; reacting the NCO-containing urea polyisocyanate with hydroxyethylacrylate at an equivalent ratio of NCO to OH of about 15-20:10-15, to form an NCO-containing urethane urea acrylate; reacting the NCO-containing urethane urea acrylate with a polyol in the absence of solvent, at a temperature in the range of 50 DEG -100 DEG C., to form an essentially NCO-free resin; and emulsifying the essentially NCO-free resin in water containing a hexose alkoxylate ester of an unsaturated fatty acid as a nonionic surfactant, to give an aqueous, radiation-curable urethane acrylate emulsion which upon curing gives a product which is odorless, waterproof, solvent-resistant, and has excellent mechanical properties.
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