A high solids, anionic, aliphatic, aqueous polyurethane dispersion.
Suggested Uses: L-2255 is an adhesive grade polyurethane suggested for industrial laminating applications. Suitable for bonding plasticized vinyl sheet to itself and to other substrates such as rubber, wood, cardboard and textiles.
- High solids (48%), co-solvent free
- Can be crosslinked to improve bond strength and heat-resistance.
- Non-crystalline nature
|Solids Tolerance ||± 1 %
|Viscosity||100 to 1000 cps (Brookfield RVT, sp. 3, 100 rpm)
|pH||7.0 to 9.5
|Softening Point ||240 ºF
|Volatile Organic Compounds (VOC) Content (As Supplied) ||10 g/L
|Elongation ||580 %
|Tensile Strength ||3000 psi
|100 % Modulus ||800 psi
|200 % Modulus ||1050 psi
|300 % Modulus ||1370 psi
|L-2255 can be used as supplied or blended with vinyl acetate/ethylene, styrene butadiene and acrylic emulsions. The rheology of L-2255 may be modified with associative or acrylic thickeners for knife-over-roll or similar methods|
L-2255 will dry to a tack-free film in 10 minutes at 200 ºF. Heat activation will occur between 235 – 245 ºF. L-2255 may be crosslinked with polyaziridines, water dispersible polyisocyanates, epoxy silanes or low temperature melamines to increase bond strength and heat resistance.