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Coatings Ingredients
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Coatings Ingredients
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CYMEL® U-663 resin

Technical Datasheet | Supplied by allnex
CYMEL® U-663 resin by allnex is a partially iso-butylated urea formaldehyde, cross-linking agent with a medium degree of alkylation. It possesses medium methylol content, a rather low imino functionality, a medium molecular weight, a medium high reactivity and a medium high viscosity. CYMEL® U-663 resin possesses very good early stacking properties. It is very suitable for acid curing wood coating applications, where low formaldehyde emission and high film gloss is required. The shelf life of this additive is 720 days.
Product Type
Crosslinking / Coupling / Curing Agents > Amines > Urea-formaldehydes
Chemical Composition
Iso-butylated urea
Physical Form
Liquid
Appearance
Clear
Product Status
COMMERCIAL
Geographical Availability
Africa, Asia / Pacific, Central and Eastern Europe, Middle East and Central Asia, North America, South and Central America, Western Europe
Applications/ Recommended for
  • Coatings > Solventborne
  • Coatings Markets > General Industrial /Maintenance
  • Coatings Markets > Wood & Furniture Coatings

CYMEL® U-663 resin Properties

Property

Value & Unit
Test Condition
Test Method
Non-volatile Content
60 - 64 %
(By Weight. Pan. 2 hr/120°C)
DIN EN ISO 3251
Viscosity
2000 - 4000 mPa-s
(At 25°C)
DIN EN ISO 3219
Free Formaldehyde Content
< 0.3 %
(Sulfite Titration)
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