Cross-Linking Agents – Blocked Poly-Isocyanates: stability and performance for precision applications
Chimica Lombarda’s blocked poly-isocyanates are cross-linking agents and adhesion promoters with chemically blocked reactivity, ideal for formulating mono-component or bi-component stoving systems.
When subjected to elevated temperatures during the drying phase, these multifunctional blocked poly-isocyanates begin to cross-link with functional groups in the coating substrate.
Our ACRALINK range offers a wide pH latitude, including anionic and non-ionic alternatives, which are easy to formulate and highly compatible with a variety of polymers and water-based binders.
Properties and benefits of Blocked Poly-Isocyanates
Download pdf- Easy to formulate for 1K coating and impregnation systems with controlled reactivity at the recommended unblocking temperature.
- Applicable with various techniques: spraying, dipping, roller/blade/veil coating, and brushing.
- Thermal activation ensures controlled reactivity under stable conditions.
- Sustainable and safe solutions: water-based, low VOC, and free from free isocyanate handling.
- Improve resistance to impact, scratches, and chemical agents.
- Offer excellent color retention.
- Enhance adhesion, tensile strength, and washability under demanding conditions.
- Meet various application needs thanks to a broad portfolio of anionic and non-ionic grades, supported by dedicated technical assistance.
ACRALINK products developed by Chimica Lombarda represent a technological innovation in the field of blocked cross-linking agents, designed to deliver superior performance at significantly lower unblocking temperatures.
The distinguishing feature of blocked poly-isocyanates is their latent, thermo-activatable reactivity, which makes the production process safer and more stable, especially during handling and storage.
Key Advantages
- Simplify production processes with controlled application.
- Minimize the risk of hydrolysis and maintain stability even during prolonged storage conditions.
Our ACRALINK range enables the creation of high-performance, sustainable water-based PU coating systems, without the use of co-solvents. They are primarily used in the production of low-VOC synthetic materials for textiles in:
- Apparel
- Footwear
- Leather goods
- Sports equipment
- Upholsery
They are also widely applied in technical fabric coatings, such as conveyor belts, protective clothing, and microporous textile coatings that are breathable and vapor-permeable for garments and footwear.
Coatings treated with ACRALINK deliver superior resistance, brightness, and durability, meeting the most demanding performance standards.
Chimica Lombarda stands out as a leader in this field, offering solutions developed to meet the highest quality standards.
By choosing our blocked poly-isocyanates, you benefit from innovative, sustainable, and customizable solutions tailored to your specific needs.
Download our cross-linking agents catalog and find the ACRALINK product that’s right for you.
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