Hauthane HD-4638 is a soft, aliphatic, water-borne polyurethane dispersion

Chemical Family: Polyurethanes (PU)

End Uses: Polyurethane Coating

Compatible Substrates & Surfaces: Fibers & Fabrics, Textiles

Features: Abrasion Resistance, Anti-fray, Crack Resistance, Good Toughness, High Melting Point, Improved Flexibility, Low Temperature Flexibility, UV Resistance

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Identification & Functionality

Chemical Family
CASE Ingredients Functions
Product Families

Features & Benefits

Applications & Uses

Application Method
Compatible Substrates & Surfaces
Coating End Applications
Suggested Use

Hauthane HD-4638 was designed for use in textile applications as a versatile polyurethane coating. Due to its overall properties, Hauthane HD-4638 can be used as a finish or a coating for many textile applications. This product is ideally suited for use as an anti-fray finish on textile fabrics that must have a soft hand. Hauthane HD-4638 is also suitable for textile coating applications that require excellent low temperature flexibility and crack resistance.

Product Applications

Spray or pad - solids may be adjusted for optimum add-on. May be thickened with HA-900 for knife coating.



Physical Form
Physical Properties
ValueUnitsTest Method / Conditions
Solid Content37 - 39%-
Viscosity50 - 500cPs-
pH7.5 - 10.0--
Softening Point320°F-
Volatile Organic Compounds (as Supplied)16gm/l-
Tensile Properties
ValueUnitsTest Method / Conditions
100% Modulus (Tested at 20 Inches/minute)770psi-
200% Modulus (Tested at 20 Inches/minute)1050psi-
300% Modulus (Tested at 20 Inches/minute)1380psi-
Elongation (Tested at 20 Inches/minute)600%-
Ultimate Tensile Strength (Tested at 20 Inches/minute)3000psi-
Product Characteristics
  • Superior flexibility
  • Soft, tough, flexible, dry film
  • Excellent UV resistance
  • Very good abrasion resistance
  • Superior low temperature flexibility and crack resistance
  • High melting point (320°F)
  • Good strength properties

Regulatory & Compliance

Chemical Inventories

Technical Details & Test Data


Excellent strength properties as supplied. Melamine-formaldehyde crosslinkers, such as Cytec’s Cymel 385 (3 - 6 phr), will provide improved performance.