Crosslinkers with top-class performance and a lower environmental impact

Crosslinkers with top-class performance and a lower environmental impact

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Crosslinking is widely practiced in the coating industry as a means to improve coating performance on wear, abrasion, chemical & stain resistance, toughness and blocking properties. As an addition to coating formulations, they provide a wide range of additional possibilities. Our carbodiimide crosslinkers (CDI) provide a sustainable, yet high-performance alternative for formulators in the paint and coating industry, looking to reduce their environmental footprint with full performance qualities. 

Carbodiimide Crosslinkers environmentally-friendly enhancer for coating qualities

Crosslinking works by connecting the polymers through reactive chemistry, thus strengthening the network of a specific coating. But stabilizing the polymer strains has disadvantages when it comes to flexible substrates, as coating properties then may be reduced in elongation, strength and flexibility. A high level of crosslinking is suitable for rigid substrates, but flexible substrates require a level of malleability suited for waterborne systems to maintain their desired properties. Compared to traditional crosslinkers, such as aziridine, isocyanates, and melamines, polycarbodiimide crosslinkers have a number of advantages. Polycarbodiimides are much less sensitive to the presence of water and able to achieve long pot-life. Due to the high reactivity, curing with CDI type crosslinkers can be done at room temperature and under typical oven conditions used for drying of applied coatings. 

 Suitable for 2K Coating systems

In addition to standard CDI crosslinker chemistry, we offer a range of crosslinkers with 2-stage reactivity. A second type of reactive group is attached to the polycarbodiimide in this range, so upon curing this crosslinker not only reacts to the -COOH groups in the polymer chains. These reactive groups react to form an even denser network structure. To further build on the success of our polycarbodiimide crosslinkers, we have upgraded our technologies to provided VOC-free new CDI versions with extreme long pot-life.

Key Benefits of Carbodiimide Crosslinkers

Carbodiimide crosslinkers offer various advantages for production of coatings for both flexible and hard substrates.

Key benefits:

Carbodiimide crosslinkers potfolio overview


Product name
Type Solids (%) Viscosity (cP)
Solvent system VOC (%)
Swiss Ordinance comptiant*
Label on product**
  Picassian® XL-701 Multifunctional 50 25 - 300 MPA 49.9 Yes
  Picassian® XL-702  Standard 40 25 - 300 H2O 0 Yes  -
  Picassian® XL-721
Multifunctional 50 50 - 400 PGDA
Yes  -
  Picassian® XL-725  Multifunctional 100 500 - 2,000  - 0.5 No
  Picassian® XL-732  Standard 40 0 - 500  H2O 0 Yes  -
  Picassian® XL-752 Standard 30 0 - 150 H2O
0 Yes  -
  Picassian® XL-755 Multifunctional 100 6,000 - 12,000  - 0 Yes   -
  Picassian® XL-762
Standard 100 15,000 - 20,000  - 0 No   -

* For indirect food contact
** Labeling due to solvent or additive, not because of CDI polymer

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Crosslinkers with top-class performance and a lower environmental impact
Raymond Bakker
Global Business Director Polymers