| 摘要 |
An aqueous polyurethane resin dispersions containingi) a polyol component with a molecular weight above 300 daltons, containing a polyether diol initiated on an aromatic diol,ii) a polyol component with a molecular weight of 62 to 299 daltons,iii) a monofunctional isocyanate-reactive compound with an ethylene oxide content of at least 50 wt. % and a molecular weight of at least 400 daltons,iv) a polyisocyanatev) an aliphatic polyamine with a molecular weight of 60 to 300 daltons or hydrazine, andvi) a hydrophilic aliphatic diamine,a process for making the dispersion and substrates primed with the dispersion.
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