DESCRIPTION: 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

APPLICATION: 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: 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.