An aliphatic, co-solvent free, polyether-based, aqueous polyurethane dispersion.

Suggested Uses: L-2641 was designed for leather basecoat applications where plate-release and print retention are important.

Characteristics:
  • Contains no co-solvent
  • Produces soft, tough films
  • Good water and solvent-resistance for a soft polymer
  • Dries to clear, glossy film
  • Dilution and cleanup with water
Unit of Measure

Physical Properties

Solids

N/A 40 %

Solids Tolerance

N/A ± 1 %

Viscosity

N/A 50 to 200 cps

pH

N/A 7.0 to 9.5

Density

N/A 8.6 lb/gal

Softening Point

N/A 340 ºF

Volatile Organic Compounds (VOC) Content (As Supplied)

N/A 20 g/L

Sward Hardness

N/A 10

Tensile Properties

Elongation

N/A 520 %

Tensile Strength

N/A >3900 psi

100 % Modulus

N/A 910 psi

200 % Modulus

N/A 1380 psi

300 % Modulus

N/A 1850 psi

Note

N/A Tested at 2 Inches/Minute

Application

N/A L-2641 can be used as a sole vehicle or blended with acrylic emulsions for spray or rotogravure applications. Rheology modifications can be made with associative thickeners for alternative application methods.

Curing

N/A L-2641 can be air dried, if desired, depending on film thickness. Typical drying temperatures and dwell times for aqueous coatings are sufficient to produce optimal film properties.