1--24- -26- Aqueous Polyurethane Dispersions Based on 1-Methyl-24-and/or-26-Diisocyanatocyclohexane and Their Use as Binders for Glass Fiber Sizings

摘要

The present invention has a resin solids content of 20 to 60% by weight, a viscosity of 10 to 20,000 mPa · s at 23 ° C. and a pH of 5.5 to 8.5, and the polyurethane has a weight average molecular weight of 5,000 to 500,000 and 2.5 to 15% by weight. Having a urethane group content (calculated as -NHCO-O-, molecular weight 59) and containing 50 to 100% by weight of 1-methyl-2,4- and / or -2,6-diisocyanatocyclohexane A polyurethane aqueous dispersion based on a polyisocyanate component.;The present invention also relates to aqueous binder compositions containing such polyurethane aqueous dispersions and known crosslinking resins, and to the use of polyurethane aqueous dispersions and aqueous binder compositions as binders for glass fiber sizing.