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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.

Webinar recording: VESTAGON® EP-BF 1350 for polyurethane coatings with class A surfaces (ECS, 2019)

Please note that products may not be available in every country. Consult with your area sales manager for further information.