Leather Finishing Resin
Leather finishing resins are polymeric binder systems applied in the final coating stages of leather production to impart appearance, protection, and performance properties. Common resin types include polyurethane dispersions, acrylic emulsions, nitrocellulose lacquers, and polyurethane-acrylic hybrids. The choice of resin determines the final leather's handle, gloss, flexibility, abrasion resistance, and resistance to perspiration and solvents.
Technical Specifications
| pH | 7.5–9.0 |
| appearance | Milky white aqueous dispersion |
| solid content | 30–45% |
| viscosity mPas | 50–500 mPa·s |
| film elongation | 400–700% |
Applications
- Full-grain bovine upper leather finishing
- Corrected grain and pigmented leather base coats
- Automotive and upholstery leather top coats
- Patent leather high-gloss finishing
- Soft glove and garment leather finishing
Key Features
- Excellent adhesion to chrome and vegetable tanned leathers
- Water-based formulation with low VOC for tannery sustainability
- Crosslinkable with carbodiimide or aziridine for enhanced durability
- Soft, flexible film that does not crack under repeated flexing
