Liopur 98-190 Polyurethane Synthopol PU - Polyurethane dispersions (PUDs) >> Polyester PU ADHESIVE AUTOMOTIVE Water Soluble in organic solvent (n-methyl-2-pyrrolidone) In the area of dispersions for adhesives, research at Synthopol Chemie concentrates on water-based polyurethane and pure acrylic dispersions. These are used as binders in one- and two-pack formulations in the automotive sector and in industry in general. After air-drying, film coatings based on Liopur 96-055 form transparent films. After air drying, coatings based on Liopur 98-190 form slightly matt films which are tack-free. Liopur 98-190 can be adjusted to a working consistency of between 500 and 5000 mPas with commercially available polyurethane thickeners such as Coatex Rheo 3000. When combined with water-emulsifiable polyisocyanates such as Desmodur DA in the ratio 100:5, heat-sealable adhesives can be produced for laminating beechwood to PVC or ABS films. A recommended compression temperature is 70 to 80°C and the contact pressure required is approx. 20 bar for a few seconds. Using adhesive layers with a wet thickness of approx. 150 µm, peel strengths of approx. 40 N/cm can be obtained (climbing drum peel test at an angle of 90° and a peel-off rate of 100 mm/min) in accordance with DIN EN 1464. High-temperature strengths with a specimen temperature of 90°C and a loading of up to 1250 g over a width of 28 mm at an angle of 180° can be termed excellent. There is compatibility with various EVA dispersions. Liopur 98-190 as a polyurethane dispersion with a excellent heat resistance up to 110 °C can be used in indoor-application for the automobile industry Storage: The shelf life at 23°C is at least six months. The product is not classified as a hazardous substance and therefore requires no special labels. Polyurethane dispersion. Suitable for hot lamination adhesives and as binder in one- and two-pack formulations for automotive sector and industry. Possesses no surface tack, adequate peel strength, very good thermal stability and produces cloudy film.