WorléePur VP Si 2021

WorléePur VP Si 2021 is suitable for the formulation of primers for wood, clear coats and top coats that dry at room temperature or forced drying. Very high hardnesses and good resistances can be achieved within a short time. Combina tions with WorléePur VP Si 4011 or 4041 are for flexibilization

Application and Properties
WorléePur VP Si 2021 is a silane-modified polyurethane. It is suitable for the formulation of base coats for wood-, clear- and topcoats, forced drying or at room temperature.

In any case, paints based on WorléePur VP Si 2021 dry very quickly and achieve a high hardness and very good resistance properties within shortest time.

For optimal crosslinking a catalyst is needed. For this purpose acids are suitable. Especially good results are achieved with WorléeAdd VP 2100, Nacure 5076 (King Industries) or Nacure 4000 (King Industries).

For the controlling of rheological properties polyurea-thixotropic binders are suitable, as e. g. WorléeThix A 1420 or WorléeThix A 2126.

These are thixotropic binders based on OH functional acrylates. When used as combination partner the groups need not to be crosslinked. The resistance properties are not negatively affected by usual additive amounts.

Catalyst
2 – 4% WorléeAdd VP 2100
1 – 2% Nacure 4000
1 – 2% Nacure 5076
each on solid binder. In very highly filled systems (e. g. primer) the needed catalyst quantity can be increased.

Handling and Storage
Preferably waterfree solvents should be used. WorléePur VP Si 2021 is delivered in an inflammable solvent. Therefore protect from heat and keep away from open fire.

After longer storage WorléePur VP Si 2021 tends to crystallisation. This crystallisation disappears after heating at approx. 50 °C and has no influence on the product properties.

For the formulation in some systems the use of molecular sieves is recommended.

ProductPolyolViscosity
20 °C / C35/1°[mPas]		Delivery forms[%]
WorléePur VP Si 2021Polyestermax 25,000[250s-1]75 in BAc/nProp.