Ultra-soft, aliphatic, water-borne urethane dispersion.

Suggested Uses: HD-4670 was designed for use in textile applications that require an ultra-soft hand coupled with good strength, abrasion resistance, and excellent resiliency. Due to its overall properties, HD-4670 can be used as a finish or a coating. This versatile urethane is ideally suited for use as an anti-fray finish on textile fabrics that must have an ultra-soft hand. HD-4670 is also ideally suited for textile-coating applications that require excellent low temperature flex crack resistance. The extremely low melt temperature also allows HD-4670 to be used as a heat sealable coating.

Characteristics:
  • Superior flexibility
  • Ultra-soft, resilient, flexible, film
  • Excellent UV-resistance
  • Good abrasion resistance
  • Superior low temperature, flex-crack resistance
  • Low melting point (240ºF)
Unit of Measure

Physical Properties

Solids

N/A 33 %

Solids Tolerance

N/A ± 1 %

Viscosity

N/A 50 to 500 cps

pH

N/A 7.5 to 10.0

Density

N/A 8.6 lb/gal

Softening Point

N/A 240 ºF

Volatile Organic Compounds (VOC) Content (As Supplied)

N/A 78 g/L

Tensile Properties

Elongation

N/A 800 %

Tensile Strength

N/A 3000 psi

100 % Modulus

N/A 200 psi

Note

N/A Tested at 20 Inches/Minute

Application

N/A Spray or pad - solids may be adjusted for optimum add-on.
May be thickened with HA-921 for knife coating.

Curing

N/A No crosslinking suggested for heat seal coatings.
Melamine-formaldehyde (3 - 6 phr) provides improved performance.