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A hard, NMP-free, APEO-free, aliphatic, polyester-based, aqueous polyurethane dispersion with an exceptional balance of properties.

Suggested Uses: L-2877 was designed for topcoat applications on a wide variety of substrates, including concrete, metal, plastic and wood.

Characteristics:
  • Balance of toughness, abrasion- and mar-resistance
  • Outstanding water and chemical resistance
  • Excellent exterior weathering performance
  • Can be crosslinked to enhance performance
  • Dilution and clean-up with ordinary tap water
  • Contains dipropylene glycol dimethyl ether (DMM) co-solvent
Unit of Measure

Physical Properties

Solids

 N/A 35 %

Solids Tolerance

 N/A ± 1 %

Viscosity

 N/A 50 to 300 cps

pH

 N/A 8.5 to 10.0

Density

 N/A 8.7 lb/gal

Softening Point

 N/A 335 ºF

Volatile Organic Compounds (VOC) Content (As Supplied)

 N/A 67 g/L

Note for Physical Properties

 N/A Provisional - Physical properties are considered provisional until at least 10 production batches have been produced.

Tensile Properties

Elongation

 N/A 210 %

Tensile Strength

 N/A 6800 psi

100 % Modulus

 N/A 4900 psi

200 % Modulus

 N/A 6750 psi

Note for Tensile Properties

 N/A Films are coalesced with 5 % DPM to ensure optimal film formation.
Tested at 20 Inches/Minute

Application

N/A L-2877 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.

Drying

N/A The addition of coalescing solvent is recommended to achieve optimal film formation with L-2877. 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.