Technical datasheet

CYMEL® UI-21-E

Supplied byallnex- Last Updated on Sep 18, 2025

CYMEL® UI-21-E by allnex is a partially iso-butylated urea resin-based crosslinking agent supplied in ethanol. Offers low odor and fast drying properties. Exhibits good compatibility with alkyd, polyester, nitrocellulose, cellulose acetate butyrate and polyvinyl butyrate.
  • It shows medium compatibility with acrylic resins.
  • It has been designed for a wide range of high build industrial wood finishes.
  • It is not suitable for exterior applications.
  • It is available in ANZ (Australia and New Zealand), Asia, China, EMEA (Europe, Middle East and Africa), LA (Latin America) and NA (North America).
  • CYMEL® UI-21-E has a shelf life of 720 days from date of manufacture.
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Applications

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Solvent-based Coatings|
Coatings

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CYMEL® UI-21-E properties

Other properties

PropertiesValue & unitTest conditionTest method
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