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EBECRYL® 4587 is a solvent-free, water emulsifiable aliphatic urethane acrylate primarily used in ultraviolet (UV) and electron beam (EB) curable coatings. Here's a summary of its properties, applications, specifications, solubility, suggested formulations, and storage and handling instructions:

Introduction:

• EBECRYL® 4587 is utilized in UV and EB curable coatings.
• Coatings based on this product offer high gloss, scratch resistance, and resistance to water, alcohol, solvents, and household chemicals.
• It allows for the formulation of UV-curable waterborne coatings without reactive thinners, solvents, or amines, in both clear and pigmented systems, with glossy or matte finishes.

Suggested Applications:

• EBECRYL® 4587 produces hard films with sandability, brilliance, mechanical and chemical resistances, and high yellowing resistance.
• A combination of EBECRYL® 4587 and EBECRYL® 4100 in an 8/2 ratio is recommended for flexibilization.

Specifications:

• Viscosity at 23°C: Approximately 1500 mPa.s
• Iodine color value: Approximately 1
• Acid number, mg KOH/g: Approximately 5

Typical Properties:

• Density at 20°C: Approximately 1.2 g/cm³
• Hydroxyl content: Approximately 1%
• Flash point: > 100°C
• Non-volatile content: Approximately 100%

Solubility:

• Water: Partly soluble
• Alcohols: Partly soluble
• Ketones: Soluble
• Esters: Soluble
• Aliphatic hydrocarbons: Partly soluble

Suggested Formulations:

• EBECRYL® 4587 can be easily emulsified in water and exhibits UV reactivity of approximately 7 m/min under an 80 W/cm Hg Lamp with 3% photoinitiator.
• General guidelines for emulsifying involve using 70 parts resin and slowly stirring in 30 parts tap water, followed by emulsification in a dissolver for about 2 minutes at high speed.
• Non-waterborne additives should be dispersed in EBECRYL® 4587 prior to emulsification.

Storage and Handling:

• Store 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 from the manufacturing date if stored appropriately.
• Check if the product meets specifications after the 24-month period.
• Refer to the Safety Data Sheet for statutory labeling information.

EBECRYL® 8209 is a tin-free aliphatic urethane acrylate oligomer designed for fast curing when exposed to ultraviolet (UV) light or electron beam (EB). Here's a breakdown of its features, applications, and specifications:

Introduction:

• EBECRYL® 8209 offers rapid cure response with UV or EB exposure, resulting in high hardness, abrasion resistance, and solvent resistance in cured films.
• It is characterized by its light color, low viscosity, and excellent cure response.

Performance Data:

• UV/EB cured formulations with EBECRYL® 8209 exhibit good adhesion, scratch resistance, and lithographic properties.
• Performance properties depend on the selection of other formulation components such as reactive diluents, additives, and photo initiators.

Suggested Applications:

• Suitable for UV/EB curable formulations applied in lithographic, screen, gravure, direct or reverse roll, and curtain coating methods.
• Recommended for plastic coatings, lithographic applications, and coatings requiring good adhesion and scratch resistance.

Typical Values:

• Appearance: Clear liquid
• Höppler viscosity at 25°C: 4000 mPa.s
• Color, Gardner max: 2
• Hydroxyl value, mg KOH/g: 80 - 105

Physical Properties:

• Density, g/cm3: 1.12
• Molecular weight, theoretical (avg): Approximately 600
• Functionality, theoretical (average): 3.9
• Polymer solids, % by weight: 100

Typical Cured Properties:

• Tensile strength, psi (MPa): 2700 (19)
• Elongation at break, %: 1
• Young's modulus, psi (MPa): 348000 (2400)
• Glass transition temperature, °C: 145

Viscosity Reduction:

• Can be diluted with reactive monomers such as oligotriacrylate, 1,6-hexanediol diacrylate, tripropyleneglycol diacrylate, and trimethylolpropane triacrylate. The choice of diluent influences properties like hardness and flexibility.

Storage and Handling:

• Avoid prolonged exposure to temperatures exceeding 40°C or direct sunlight to prevent uncontrollable polymerization.
• Store in appropriate containers (stainless steel, amber glass, amber polyethylene, or baked phenolic lined).
• Use dry air to displace material removed from the container.
• Shelf life: Not recommended for storage for more than 2 years.

Precaution:

• Refer to the Safety Data Sheet for appropriate handling procedures and protective equipment.
• Follow emergency and first aid procedures outlined in the Safety Data Sheet.

EBECRYL® 8209 offers a versatile solution for fast-curing UV/EB formulations with excellent performance properties, making it suitable for various coating applications.