Niso Exterior 2K System

Water-based isocyanate-free coatings

12 February 2024

Water-based
diisocyanate-free coatings

Niso Exterior 2K System solutions are isocyanate-free coatings created: for the protection and the design of exterior windows and doors. Choosing these coatings from Renner laboratory means complying with regulations and making your life easier. As well as accessing the highest standards of durability and aesthetics by Renner Italia.

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Niso Exterior 2K System is the coating programme that does not require a training of diisocyanates workers.

Excellent on wood and wood-aluminium windows, shutters, entry doors, garage doors, Niso Exterior 2K System, according to the desired look, includes the use of

  • diisocyanate-free hardener YC—M410
  • stained topcoat YO-xxM380
  • pigmented topcoat YO-xxC380

Flat or vertical application both airmix and airless. Also in two-pump system.

Diisocyanates in coatings
What the regulation states

Diisocyanates are chemical compounds classified as category 1 respiratory and skin sensitisers. They are components sometimes used in coating formulas. EU Regulation 2020/1149 specifies that, in order to use a mixture with a diisocyanate concentration of more than 0,1%, the user must have successfully completed a specific training. Thanks to Niso Exterior 2K System solutions, Renner Italia solves the root of the problem, by not including diisocyanates among the raw materials of the hardener. As a result, it is not necessary to attend the training of diisocyanates workers.

No need to attend the training
thanks to Niso Exterior 2K System

The curing process of a traditional water-based coating is divided into three steps: the evaporation of the water, the melting of the resin micelles and the formation of the layered structure.

Evaporation of the water

Melting of resin micelles

Formation of the layered structure

To increase the film performance of a topcoat, it is necessary to bind the layers through chemical reactions promoted by a second component. And this is when the hardener becomes involved.
Compared to the traditional 1K system, the 2K system provides superior performances in terms of resistance to chemicals, water, scratching, abrasion and blocking. The innovative second component YC—M410 by Renner Italia is the polyisocyanate hardener with encapsulated aziridine functionality. A unique innovation that meets all legal requirements, exempting the painter from the training required by the EU 2020/1149 regulation, focusing on all key performance indicators of the 2K system.

Niso Exterior 2K System
All the advantages to be taken

Higher performances than 1k topcoat

Compared to a traditional 1K topcoat, Niso Exterior 2k System significantly increases resistances to:
blocking / scratching, strikes and abrasions / chemicals and creams

More efficient than 2k topcoat with isocyanate

Compared to the traditional 2K topcoat with isocyanate, Niso Exterior 2k System is valued for
longer pot-life accelerated curing / reduced waste / simplified pump maintenance
Furthermore, Niso Exterior 2k System has less occupational health and safety restrictions:
it does not require a diisocyanate training / has no flammable components / has labels with reduced warnings
Isocyanate (market reference)
YC—M410

Easier than 2k topcoat with aziridine

Compared to the traditional 2K topcoat with aziridine, Niso Exterior 2k System has less occupational health and safety restrictions:
it has labels with reduced warnings
Aziridine (market reference)
YC—M410

Niso Exterior 2K System
fears no comparison

1K topcoat
(market reference)		2K topcoat
with isocyanate
hardener
(market reference)		2K topcoat
with aziridine
hardener
(market reference)		2K topcoat
YO-xxX380
hardened at 4%
with YC---M410
2nd component
label
1K topcoat(market reference)
not applicable
2K topcoat with isocyanate hardener(market reference)
2K topcoat with aziridine hardener(market reference)
2K topcoat YO-xxX380 hardened at 4% with YC---M410
2nd component
flammability 
1K topcoat(market reference)
not applicable
2K topcoat with isocyanate hardener(market reference)
2K topcoat with aziridine hardener(market reference)
2K topcoat YO-xxX380 hardened at 4% with YC---M410
2nd component
hardener addition
1K topcoat(market reference)
not applicable
2K topcoat with isocyanate hardener(market reference)
7-10%
2K topcoat with aziridine hardener(market reference)
1-2%
2K topcoat YO-xxX380 hardened at 4% with YC---M410
4%
2nd component
pot-life
1K topcoat(market reference)
not applicable
2K topcoat with isocyanate hardener(market reference)
2-4 hrs
2K topcoat with aziridine hardener(market reference)
6-8 hrs
2K topcoat YO-xxX380 hardened at 4% with YC---M410
16-24 hrs
Topcoat + 2nd component
chemical resistance
1K topcoat(market reference)
2K topcoat with isocyanate hardener(market reference)
2K topcoat with aziridine hardener(market reference)
2K topcoat YO-xxX380 hardened at 4% with YC---M410
Topcoat + 2nd component
mechanical resistance
1K topcoat(market reference)
2K topcoat with isocyanate hardener(market reference)
2K topcoat with aziridine hardener(market reference)
2K topcoat YO-xxX380 hardened at 4% with YC---M410
Topcoat + 2nd component
pumps maintenance
1K topcoat(market reference)
2K topcoat with isocyanate hardener(market reference)
2K topcoat with aziridine hardener(market reference)
2K topcoat YO-xxX380 hardened at 4% with YC---M410
Topcoat + 2nd component
speed of curing
1K topcoat(market reference)
2K topcoat with isocyanate hardener(market reference)
2K topcoat with aziridine hardener(market reference)
2K topcoat YO-xxX380 hardened at 4% with YC---M410
Topcoat + 2nd component
product waste
1K topcoat(market reference)
2K topcoat with isocyanate hardener(market reference)
2K topcoat with aziridine hardener(market reference)
2K topcoat YO-xxX380 hardened at 4% with YC---M410
excellent
good
sufficient
insufficient

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