| 摘要 |
The present invention is directed to a polyisocyanate composition which is dispersible in water, has an average NCO functionality of 2 to 6 and contains a) a polyisocyanate adduct prepared from 1,6-hexamethylene diisocyanate or a mixture of hexamethylene diisocyanate with up to 70% by weight, based on the weight of the diisocyanates, of another diisocyanate and b) at least 10% by weight, based on the weight of the polyisocyanate adduct, of an emulsifier which is based on the reaction product of i) a monohydroxy functional polyether wherein the ethylene oxide portion of the polyether has a molecular weight of 200 to 1000 and the polyether has a total molecular weight of 200 to 1500 with ii) either a polyisocyanate adduct which corresponds to component a) or another polyisocyanate. The present invention is also directed to a composition which contains this polyisocyanate compositions and an aqueous resin containing isocyanate-reactive groups.
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