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 of PUR powder coatings.
The product is an internally blocked – thus blocking agent free - cycloaliphatic polyisocyanate adduct with a deblocking temperature of 160 °C. Provides good mechanical properties with very high flexibility.
The product is an 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.
The product is an internally blocked – thus blocking agent free - cycloaliphatic polyisocyanate adduct with a deblocking temperature of 160 °C. Delivers unique levelling for perfect glossy surfaces.
The product is an 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.