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.

Webinar Recording: VESTAGON® EP-BF 1350 for polyurethane coatings with Class A surfaces (EC, 2019)
Webinar Recording: VESTAGON® EP-BF 1350 for polyurethane coatings with Class A surfaces (EC, 2019)
Webinar Recording: Glänzende Aussichten mit PUR Pulverlack Systemen (Farbe & Lack, 2019)

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