Leather Casein Additive

Leather Casein Additive is modified casein in polyurethane
dispersion. Casein is chemically similar to leather collagen, which supports strong adhesion to leather surfaces. In finishing, it forms a dispersed film that improves vapour and moisture exchange and can be polished during finishing to create a natural lustre.

Best for

• Leather clothing and footwear
• Leather accessories
• Finishing applications where breathability is important

Compatible with

• Dyed leather
• Semi-aniline leather
• Aniline leather
• Artificial leather
• Vegetable-tanned leather
• Pull-up leather

Not suitable for

• Suede
• Nubuck

Key benefits

• Highest adhesion to leather
• Colour stability under UV and external factors
• Improved hygienic properties through air, vapour, and moisture exchange

Can be polished during finishing for lustre and appearance

1. After painting, protect the surface with Leather Top Coat.
2. Add Leather Cross Linker X (5 to 10%) of the total mixture.
3. Add Leather Casein Additive (10 to 15%) of the total mixture.
4. Apply as the final step, spraying is recommended for an even film.
5. Avoid applying too thick a layer, excess build can affect colour and handling.
6. Typical use after 2 to 3 hours, full cure 8 to 12 hours. Avoid cleaners and leather care products for the first week.

• Brand: LeTech
• Manufacturer: LeTech International Ltd (United Kingdom)
• Product type: Casein finishing additive for polyurethane coatings
• Suitable for: Cars, furniture, aviation, marine, footwear, bags, upholstery
• Suitable leather types: Dyed, semi-aniline, aniline, artificial,
  vegetable-tanned, pull-up
• Not suitable for: Suede, nubuck
• Storage: Tightly closed container, dry ventilated area, away from direct sunlight, 5–35°C, max 80% humidity
• Shelf life: 3 years from production date