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  • Coatings

Bayhydrol® UV 2689/1

Anionic, UV-curable polyurethane dispersion. Bayhydrol® UV 2689/1 XP is used in the formulation of industrial waterborne UV clear and pigmented coatings. Main applications are plastic coatings (e.g mobile phones) and wood coatings. Before UV curing the surface of dried films is soft and slightly tacky. After UV-cure the coatings are hard with high chemical and mechanical resistance. The product is suitable to achieve high gloss coatings.

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About

Product Types

  • Waterbased dispersion
  • UV-curing dispersion
  • Polyurethane

Material

Coatings
High functional, Waterborne

General Characterization

Anionic, UV-curable polyurethane dispersion.
Bayhydrol® UV 2689/1 is used in the formulation of industrial waterborne UV clear and pigmented coatings. Main applications are plastic coatings (e.g mobile phones) and wood coatings.
Before UV curing the surface of dried films is soft and slightly tacky. After UV-cure the coatings are hard with high chemical and mechanical resistance. The product is suitable to achieve high gloss coatings.

Storage Conditions

- Storage in original sealed Covestro container.

- Recommended storage temperature: 5 - 30 °C.

- Protect from frost, intense radiation (light, UV), heat and foreign material.

General information: The product is sensitive to frost. Freezing will damage the product irreversibly. Prolonged storage at higher temperatures may result in an increase of average particle size, risk of sedimentation, risk of pH-drift and ultimately coagulation. Even though the product is stabilized by a biocide, contamination with certain bacteria, fungi or algae may render the product unusable.

Sampling

No data available

Packaging Type

No data available

Technical Properties & Datasheets

Property Name Test Method Unit Value
pH DIN ISO 976 7.0 - 8.5
Non-volatile content (1 g/1 h/125 °C, convection oven) DIN EN ISO 3251 % by wt. 40.0 - 44.0
Flow time at 23 °C, 4 mm cup Bayer analytical method No.2008/105 03 03-098 D 15.0 - 50.0

Property Name Test Method Unit Value
Pendulumn hardness DIN 53157 (König) s 190
Double rubs ethanol (50) Unchanged
Pencil hardness DIN EN 13523-4 > 1 H
Double rubs acetone (10) Unchanged
Double rubs petrol (50) Unchanged

Downloads

Technical Data Sheet
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Safety Data Sheet
No direct download available, please visit www.productsafetyfirst.covestro.com
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