A soft, aliphatic, polyester-based, aqueous polyurethane dispersion.

Suggested Uses: L-2969 was designed primarily for use on flexible substrates as a coating, saturant or impregnant. L-2969 may also be used as a blending resin with harder polyurethane dispersions to impart flexibility without adversely effecting chemical resistance.

Characteristics:
  • Outstanding toughness and abrasion resistance
  • Excellent water and chemical resistance
  • Exceptionally high melting point for a medium soft polymer
  • Can be crosslinked to enhance performance
  • Dilution and clean-up with water
  • Contains dipropylene glycol dimethyl ether co-solvent
Unit of Measure

Physical Properties

Solids

N/A 35 %

Solids Tolerance

N/A ± 1 %

Viscosity

N/A 75 to 200 cps

pH

N/A 8.5 to 10.0

Density

N/A 8.7 lb/gal

Softening Point

N/A 325 ºF

Volatile Organic Compounds (VOC) Content (As Supplied)

N/A 107 g/L

Sward Hardness

N/A 10

Tensile Properties

Elongation

N/A 500 %

Tensile Strength

N/A >5000 psi

100 % Modulus

N/A 700 psi

200 % Modulus

N/A 1100 psi

300 % Modulus

N/A 2000 psi

Note

N/A Tested at 20 Inches/Minute

Application

N/A L-2969 can be used as a sole vehicle or blended with harder polyurethane dispersions or acrylic emulsions for spray or rotogravure applications. Rheology modifications can be made with associative thickeners for alternative application methods.

Curing

N/A The addition of coalescing solvent is recommended to achieve optimal film formation with L-2969. In ambient-cured systems the addition of 5 - 10 % DPnB coalescing solvent is suggested. Less coalescing solvent is required in heat-cured systems to attain comparable film properties. Typical drying temperatures and dwell times for aqueous coatings are sufficient to produce optimal film properties. L-2969 may be crosslinked with carbodiimides, water-dispersible isocyanates or polyaziridines to further enhance performance.