Fast setting 1k-polyurethane glue
A one-pack polyurethane adhesive containing a polyisocyanate prepolymer and at least one aminoether polyol, having a molar ratio of ether groups to amino nitrogen in the aminopolyether polyol of 7 to 30.
1. A one-pack polyurethane adhesive comprising a polyisocyanate prepolymer and at least one aminopolyether polyol, having a molar ratio of ether groups to amino nitrogen in the aminopolyether polyol of 7 to 30, and comprising one or more non-incorporable catalysts in a weight ratio of said catalysts to the at least one aminopolyether polyol of 20:1 to 1:3.
2. The adhesive of claim 1 , having a content of alkali metal ions of less than 20 ppm.
3. The adhesive of claim 1 , comprising at least 88% by weight polyisocyanate prepolymers.
4. The adhesive of claim 1 , wherein the polyisocyanate prepolymer has an NCO content of 4 to 17% by weight.
5. The adhesive of claim 1 having a content of aminopolyether polyol or aminopolyether polyols of 0.2 to 4% by weight.
6. The adhesive of claim 1 , comprising an aminopolyether polyol based on triethanolamine or tripropanolamine.
7. The adhesive of claim 1 , wherein the non-incorporable catalyst comprises 2,2′-dimorpholinodiethylether.