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Water-dispersible polyisocyanate mixtures, a process for their preparation and their use in two-component aqueous compositions

  • US 5,252,696 A
  • Filed: 11/04/1992
  • Issued: 10/12/1993
  • Est. Priority Date: 11/07/1991
  • Status: Expired due to Term
First Claim
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1. A water-dispersible polyisocyanate mixture whicha) has an average isocyanate functionality of 1.8 to 4.2,b) contains 12.0 to 21.5% by weight of (cyclo)aliphatically bound isocyanate groups (calculated as NCO, molecular weight=42),c) contains 2 to 20% by weight of ethylene oxide units (calculated as C2 H4 O, molecular weight=44) arranged within polyether chains, the polyether chains containing, on average, 5.0 to 9.9 ethylene oxide units andd) is not prepared from and does not contain 1,6-hexamethylene diisocyanate.

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