Category overview
Polyurethane resins are available as clear to amber-colored liquids or solids and are formed by the reaction of polyols and isocyanates. Their key features include excellent weatherability, impact resistance, and adhesion to various substrates. They are widely used in automotive, industrial, and architectural applications, offering long-lasting protection against wear, abrasion, and environmental conditions.
There is a growing trend toward waterborne and bio-based polyurethane resins. Available in both solvent-based and water-based forms, these resins are formulated to meet regulatory requirements, including reduced VOC emissions and compliance with environmental standards.
Applications
Claims / benefits
Properties
| Others properties | Value & unit | Test condition | test method |
|---|---|---|---|
Solid Content (1632) | Visible After Login | Visible After Login | Visible After Login |
Viscosity (2042) | Visible After Login | Visible After Login | Visible After Login |
Learn more about this product family
Products
Most popular products
Crysol® 6110
by Wanhua Chemical
- Support available
- Original documents
UCECOAT® 7355
by allnex
- Sustainable option
- Support available
- Original documents
Lacper® 4219
by Wanhua Chemical
- Support available
- Original documents
Popular suppliers
FAQs
Why are polyurethane resins valued for durability and abrasion resistance?
They form tough, flexible films resisting abrasion, impact, and chemicals, suited to floors, furniture, and industrial coatings facing heavy wear. Their chemistry allows a wide hardness/flexibility range, giving formulators significant design flexibility.
Why do some polyurethane coatings need controlled humidity during application?
Moisture-curing PUs rely on ambient humidity to trigger curing - too little slows it, too much can cause bubbling from rapid gas release. Applying within the recommended humidity/temperature range ensures a smooth, properly cured film.
Why should I choose polyurethane over alkyd or acrylic?
Polyurethanes generally deliver the highest abrasion, chemical, and impact resistance, at higher cost. On the other hand, alkyds offer good flow and low cost but weaker durability. Acrylics balance UV resistance and cost for many exterior uses.
Why might a polyurethane coating show bubbling or pinholes during cure?
Often moisture reacts with isocyanate groups faster than the released gas can escape, especially in thick films or humid conditions. Trapped solvent or improper 2K mixing ratios can also contribute.