| abstract |
The present invention relates to a kind of metal coating material aqueous polyurethane polyamide resin emulsion and preparation method thereof.It is made up of 70～85 parts of polyamide polyalcohols, 15～30 parts of PolyTHFs, 5～25 parts of amido silicon oils, 65～85 parts of isoflurane chalcone diisocyanates, 0.5 part of organo-bismuth, 5～15 parts of Isosorbide-5-Nitrae butanediols, 10～15 parts of dihydromethyl propionic acids, 5～10 parts of diethylenetriamines and appropriate solvent.By polyamide polyalcohol, PolyTHF, amido silicon oil, isoflurane chalcone diisocyanate and organo-bismuth mixing temperature reaction, adding Isosorbide-5-Nitrae butanediol, dihydromethyl propionic acid reaction, course of reaction is added solvent and is controlled viscosity, then cool down, emulsify, add diethylenetriamine and continue reaction.This product can apply to metal surface, suitable with same kind of products at abroad in performance, more much lower than the same kind of products at abroad sold at home in price, has preferable market prospects, and manufacturing-oriented enterprise also has preferable economic benefit. |