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EBECRYL® 4690
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Producer: 
allnex
Brand: 
EBECRYL
Energy-curable, Tin-free, urethane acrylate with ~27% bio-carbon offering and an excellent outdoor durability for clear and pigmented coats. This solvent-free product presents a high reactivity for an effective productivity and brings high hardness after cure with excellent substrate protection.

EBECRYL® 4690

Producer: 
allnex
Brand: 
EBECRYL
Energy-curable, Tin-free, urethane acrylate with ~27% bio-carbon offering and an excellent outdoor durability for clear and pigmented coats. This solvent-free product presents a high reactivity for an effective productivity and brings high hardness after cure with excellent substrate protection.
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Identification & Functionality

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Features & Benefits

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Performance Highlights

UV/EB cured coatings based on EBECRYL® 4690 are characterized by the following performance properties: ·

  • Very good mechanical properties ·
  • High abrasion resistance ·
  • Good chemical resistance
  • Low yellowing
  • Robust outdoor resistance (weathering)

The actual properties of UV/EB energy cured products also depend on the selection of other formulation components such as reactive diluents, additives and photo initiators.

Applications & Uses

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Recommended Uses & Known Applications

EBECRYL® 4690 is designed for use in the formulation of UV/EB energy curable coatings for application by roller coating, spraying and curtain coating on wood, cork, furniture, paper, parquet plastics and film. It is a very suitable choice for outdoor building and cladding applications.

Formulation Guidelines

Coatings can be adjusted to appropriate viscosity for the application with additional HDDA(1) or the addition of other standard reactive diluents such as dipropylene glycol diacrylate (DPGDA)(1) ,  isobornyl acrylate (IBOA)(1) and trimethylolpropane triacrylate (TMPTA)(1) as well as solvents such as butyl acetate.

EBECRYL® 4690 is compatible with most acrylate monomers and oligomers. Because of the many possible combinations with reactive diluents and solvents, the compatibility must be tested in each individual case.

UV curing of coatings formulated with EBECRYL® 4690 requires the addition of standard commercial photo initiators.  Typical levels are 4 - 6% although this may vary to meet the reactivity requirements for the application.  In the case of EB curing, a low oxygen atmosphere must be ensured to avoid surface inhibition. Lower gloss coatings can be produced using standard matting agents.  Care should be taken with respect to sedimentation which may cause the coating to gel prematurely

Properties

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Thermal Properties
ValueUnitsTest Method / Conditions
Acid Valuemax. 1mg KOH/g
Colormax. 75APHA
Density (at 20°C)approx. 1.1g/cm³
Elongation at Break1.5%
Flash Pointmin. 100°C
Functionalitymin. 4
Hydroxyl Contentmax. 0.5%
Tensile strength2320 (16)psi (MPa)
Tg82.0°C
Viscosity (at 23°C)25000 - 33000mPa.s
Young’s Modulus203000 (1400)psi (MPa)

Storage & Handling

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Precautions

Before using EBECRYL® 4690, see the Safety Data Sheet (SDS) for information on the identified hazards of the material and the recommended personal protective equipment and procedures.

Documents (4)

Name
Type
allnex ECOWISE™ CHOICE Product Guide
Brochure
allnex Sustainable Product Portfolio - ECOWISE™ CHOICE for Industrial Wood Market
Brochure
EBECRYL® 4690 Technical Data Sheet - EN
Technical Data Sheet
EBECRYL® 4690 (ANZ) Technical Data Sheet
Other