IMPRANIL® C

Impranil® C is a polyester urethane adduct based on toluene diisocyanate, designed to be crosslinked with a polyisocyanate before use. Here's a summary of its characteristics and applications:

Characterization: Impranil® C is a polyester urethane adduct based on toluene diisocyanate, requiring crosslinking with a polyisocyanate before application.

Application: It's suitable for formulating coatings with a medium-hard handle for various textile applications, including:

• • Protective clothing
  • Sportswear
  • Tarpaulins
  • Covers for containers
  • Light conveyor belts
  • Ironing board covers
  • Camping articles
  • Awnings
  • Fire hoses
  • Tent materials
  • Sleeping bag undersides

Form Supplied: It is supplied in pellet form and also available as a 30% solution in ethyl acetate (Impranil® C solution).

• Special Properties:
  • Good adhesion
  • Resistance to hydrolysis
  • Weather stability
  • High abrasion resistance
  • Resistance to dry cleaning

Film Properties: Impranil® C yields medium-hard films resistant to hydrolysis and weathering. Key properties include:

• • 100% modulus: 4 MPa
  • Tensile strength: 45 MPa (original)
  • Elongation at break: 400%
  • Lightfastness: 4

Processing/Application: Suitable solvents for Impranil® C include butyl acetate, ethyl acetate, methyl ethyl ketone, acetone, toluene/acetone (3:1), and dimethylformamide/methyl ethyl ketone (1:1). It requires specific additives for processing, including a crosslinking agent and catalyst.

Applications: Impranil® C coatings can be applied by direct and transfer coating processes. It's essential to prepare only the amount of coating that can be used within its pot life after adding crosslinking agents and catalysts.

Storage: Recommended storage conditions include storing in the original sealed Covestro container at room temperature (20°C) and protecting from moisture, heat, and foreign materials.

In summary, Impranil® C offers a range of desirable properties suitable for various textile coating applications, providing medium-hard coatings with excellent durability and resistance to environmental factors.