EBECRYL® 4587

Ebecryl®4587 coatings are characterized by high gloss, scratch resistance, and resistance to water, alcohol, solvents, and household chemicals. Ebecryl®4587 allows formulating UV-curable waterborne coatings free of reactive thinners, solvents, and amines, as clear or pigmented systems as well as with glossy or matte finishes.

• Ebecryl®4587 can be easily emulsified in water. After the water has been flashed off, Ebecryl®4587 exhibits (with 3% photoinitiator) a UV-reactivity of approximately 7m/min. under an 80 W/cm Hg Lamp.

• General Guidelines for Emulsifying Ebecryl®4587:

  • Take 70 parts resin and slowly stir in 30 parts tap water.

  • Emulsify in a dissolver for approximately 2 minutes at high speed (peripheral speed of the stirring disk: 20 m/s).

  • The remaining waterborne components of the formulation are added at reduced speed.

• Storage stability must be tested prior to use as it varies in accordance with the formulation used, in particular with the addition of dispersions. Due to Ebecryl®4587 emulsions being acidic, compatibility with other components has to be checked. Experience has shown that neutralization with amine/ammonia negatively impacts storage stability.
• If the coating can be applied immediately, the water can be added and stirred directly on site. The maximum water concentration is approximately 20%, which can be increased by the addition of 1 to 2% ethanol or acetone.
• Non-waterborne additives must be dispersed in Ebecryl®4587 prior to emulsification. Depending on the pigment concentration, the pigmented coating should either be dispersed in pure resin or dispersed in a dissolver using a previously produced stock emulsion (approximately 75%). If dispersed in the resin, the mill base must be cooled to approximately +35°C prior to emulsification.
• Air bubbles produced during formulation can be removed by sieving the coating, this prevents water from setting on the surface.
• Acematt™ T5100, Acematt™ OK 412, and Deuteron™ MK have proven effective as matting agents, these should be added to the resin prior to the emulsification. Coalescing agents should not be used as they can cause cracking.
• An Ebecryl®4587 coating can be applied in high solids formulations using conventional application methods such as spraying, rolling, and casting. The maximum coating weight should not exceed 100 g/m², otherwise, it cannot be guaranteed that the water will flash off completely before UV curing.
• Liquid photo-initiators are required for UV curing, these are added to the resin prior to emulsification. The water must be completely flashed off prior to radiation curing.
• Esacure™ KIP 100F was shown to be an efficient initiator for clearcoats. For pigmented coatings, we recommend trying Esacure™ KTO46. These pigmented coatings must be cured using high-pressure gallium-doped mercury vapor lamps that emit in the long wave spectrum.
• Formulation equipment and tools can be cleaned in a 95:5 water/acetone solution.

• Storage in original sealed Allnex containers.
• Recommended storage temperature: -10 to +35°C
• Protect from intense radiation (light, UV), heat, and foreign material.
• Shelf life 24 months