Blocking agent free crosslinkers for PU powder coating
VESTAGON® BF crosslinkers are internally blocked IPDI based polyisocyanates enabling the formulation of coatings with considerably low emission values.
Our VESTAGON® BF grades are blocking agent free. During synthesis the reactive groups are rendered inert through the formation of a relatively weak uretdione ring. This bond can be cleaved upon heating starting from 160°C. In combination with a dedicated catalyst, this temperature can be reduced to approx. 130°C.
Although the total content of reactive groups is similar to ε-caprolactam blocked grades, their functionality is somewhat lower. The use of branched polyesters with a higher hydroxyl content can compensate for this.
Benefits
- Low emission
- Even flat matte is possible in one shot
- Good durability
Applications
- Automotive Coatings
- Coatings for Decorative Metal Surfaces
- Antigraffiti Coatings
- Household Appliances
- Metal Rim Coatings
Crosslinkers for the formulation PUR powder coatings.
Internally blocked – thus blocking agent free - cycloaliphatic polyisocyanate adduct with a deblocking temperature of 160°C. Provides good mechanical properties with very high flexibility.
Internally blocked – thus blocking agent free - cycloaliphatic polyisocyanate adduct with a deblocking temperature of 160°C. Provides good mechanical properties with very high flexibility and very good matting behavior in appropriate formulations.
Internally blocked – thus blocking agent free - cycloaliphatic polyisocyanate adduct with a deblocking temperature of 160°C. Delivers unique levelling for perfect glossy surfaces.
Internally blocked – thus blocking agent free - cycloaliphatic polyisocyanate adduct with a deblocking temperature of 160°C. Focus on very high flexibility coatings.
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Please note that products may not be available in every country. Consult with your area sales manager for further information.