The Universal Selection Source: Coatings Ingredients

by SpecialChem

NECOWEL™ 720

Technical DataSheet | Supplied by ASK Chemicals

NECOWEL™ 720 by ASK Chemicals is a polyol component to formulate 2K PU lacquers. It has a high molecular weight polyester backbone and incorporated building blocks which increase the reactivity towards isocyanates. This improves the drying time up to 3 hours and achieves pendulum hardness above 150 seconds after seven days while maintaining a pot-life greater than 6h. It results in the cured PU-coating, clear-coat and topcoat exhibiting high gloss retention as well as an excellent- scratch, chemical and weathering resistance. It is free of VOC and SVOC and does not contain APEO. As crosslinker HDI and IPDI based oligomeric polyisocyanates are recommended. As usual in PU systems, an excess of crosslinker is recommended (e.g. 150 % isocyanate). NECOWEL™ 720 has a shelf life of 6 months.

NECOWEL™ 720 Product details

Product Type
xxxxxxxxxxxxxxxxxxxxxxxxx
Chemical Composition
xxxxxxxxxxxxxxxxxxxxxxxxx
Physical Form
Dispersion
Appearance
Milky-white, colloidal
Product Status
xxxxxxxxxx
Applications/ Recommended for
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NECOWEL™ 720 Properties

Property

Value & Unit
Test Condition
Test Method
Solid content (in water)
xxxxxxx %
Viscosity @25°C
xxxxxxxxx Pa.s
pH
xxxxxxxxx
OH-value (5.0-6.5%)
xxxxxxxxx mg KOH/g
Kocher limit
xxxxxxxxx µm
Last edited Mar 22, 2017
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