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US 6,642,303 B2Granted
Polyurethane-polyurea dispersions as coating compositions
AssigneeBayer Aktiengesellschaft
InventorsDetlef-Ingo Schütze, Gerald Kurek, Thorsten Rische, Jürgen Urban, Tillmann Hassel
Life of this patent
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Abstract
The invention concerns ionic and/or non-ionic hydrophilic, aqueous polyurethane-polyurea dispersions (PU dispersions) based on polycarbonate polyols and polytetramethylene glycol polyols, a process for their production and their use as coating compositions, in particular for the production of very stable thick foam deposits in a single coat.
Claims15
An ionic and/or non-ionic hydrophilic, aqueous polyurethane (PU) dispersion comprising
- A1 a polyisocyanate, A2 a mixture of a polycarbonate and a polymethylene glycol polyol, A3 optionally a momoslcohol or a monoamine, A4 a polyol, an amino polyol or a polyamine, A5 optionally a polyoxyalkylene ether with at least one hydroxyl or amino group, and A6 optionally an antioxidant and/or a light stabilizer and/or another auxiliary substances and/or an additive.
Dependencies are inferred from the claim text.