Coating ingredients for UV / Radiation-curable Coatings

EBECRYL® 436 by allnex is a reactive chlorinated polyester resin diluted 40% with the reactive diluent trimethylolpropane triacrylate (TMPTA). It exhibits good lithographic behavior, pigment wetting properties and fast cure response in ultraviolet light (UV) curable coatings and inks. Cured films of EBECRYL® 436 display good adhesion to metals, plastics and paper. It is recommended for wet lithographic inks for paper, plastics and metals, overprint varnishes and post-formable inks.

SYLOID® 7000 distributed by DKSH is a wax treated, synthetic amorphous silica with special organic treatment. It acts as a matting agent. It exhibits high porosity, high matting effect, ease of dispersion, excellent film clarity and film smoothness.

• It offers excellent optical properties in wet paint and dried coating film.
• It is suitable for use in high quality water-borne and solvent-borne coatings for furniture, artificial and natural leather, automotive plastic parts, foils, laminates, and UV-curable acrylate systems.
• SYLOID® 7000 has a shelf life of 12 months.
• It is available in Asia and Europe.

Isobornyl acrylate (IBOA) by allnex is a low viscosity, monofunctional, UV/ EB energy curable reactive diluent. It polymerizes when exposed to sources of free radicals. Its bicyclic structure gives rise to polymers of increased glass transition temperature, while its monofunctionality minimizes crosslinking. Provides good hardness and resiliency combined with flexibility and impact resistance. It is characterized by a wide range of compatibility with oligomers and low color. Offers thermal resistance, low shrinkage and improved water resistance. It maintains high elongation in urethane acrylates. IBOA is used in screen inks and coating applications.

EBECRYL® 600 by allnex is a low VOC diacrylate ester of bisphenol A epoxy resin. It provides light color and fast cure response.

• Films cured via exposure to ultraviolet light (UV) or electron beam (EB) possesses high surface hardness and gloss and excellent chemical resistance.
• It reduces energy consumption and exhibits low carbon foot print, good compatibility, low flammability and long potlife.
• It is a radiation curable, solvent- and tin free grade.
• EBECRYL® 600 is recommended for lithographic and screen inks, overprint varnishes and fast cure coatings.
• It is also used in coatings for paper, paperboard, wood, chipboard and rigid plastics.

EBECRYL® 860 by allnex is an epoxidized soya oil acrylate. Exhibits good hydrophilic-lipophilic balance for lithography and good surface appearance. It improves the flow and leveling of UV or electron beam (EB) curable inks and coatings. It enhances pigment & substrate wetting and adhesion when used as a modifier. Recommended for overprint varnishes for paper, lithographic ink vehicles, metal decorating and protective coatings, screen ink vehicles and pigmented wood coatings. Formulated products containing EBECRYL® 860 may be applied via direct or reverse roll, offset gravure, metering rod, slot die, knife over roll, air knife, curtain, immersion and spin coating methods, as well as flexographic, lithographic and screen printing.

HDDA by allnex is a difunctional reactive diluent that is commonly used as a component of ultraviolet light (UV) and electron beam (EB) curable applications. It is characterized by very low viscosity, low color and efficient reduction of oligomer viscosity.

• It offers good cure response at low cross-link density.
• It is particularly useful in exterior durable coatings & inks where improved elasticity, weathering and adhesion are desired in combination with excellent water resistance.
• HDDA offers improved adhesion to plastics, metal and glass.

MODAFLOW® RESIN by allnex is a low/zero VOC, silicone-, APEO-, and tin-free acrylic flow modifier for non-aqueous industrial coatings. It is suitable for radiation curing systems. It offers improved leveling, substrate wetting and enhanced substrate adhesion.

• It helps air release and facilitates pigment dispersion.
• It is effective in eliminating pinholes, fisheyes, orange feel and craters in epoxy, polyester, hybrid, urethane, and acrylic powder coatings.
• It is regulated by the U.S. FDA for indirect food contact applications under several parts of Title 21, Code of Federal Regulations.
• Recommended dosage level of MODAFLOW® RESIN is 0.1-2.0%.
• It has a shelf life of 1460 days at 25°C.

SYLOID® 622 distributed by DKSH is a synthetic amorphous silica. It is an untreated medium porosity silica matting agent of coarse particle size. It acts as non-slip/anti-skid additive in coil coatings.

• It is used in thick film coatings, powder coatings and radiation curable systems.
• It has a shelf life of 12 months.
• SYLOID® 622 is available in New Zealand, Australia and Europe.

Photomer® 6008 distributed by DKSH is a high viscosity, proprietary, aliphatic urethane acrylate oligomer. It is an excellent film former and it contributes towards unique performance properties typical of urethane acrylates in UV/EB curable formulations.

• It exhibits fast cure speed, low odor, skin irritancy and low volatility.
• It is recommended for use in UV/EB curable electronic coatings including solder masks, plate resists, conformal coatings, component coatings and insulating varnishes.
• It is an excellent base resin for screen printing inks where it contributes to consistent application viscosity, better pattern resolution and uniform coating thickness during cure.
• It forms tough, durable films with excellent high temperature stability, superior solvent resistance, high surface hardness and good flexibility when cured.
• It is suitable for lithographic and direct roll methods in addition to screen printing presses.
• It provide high gloss, reactivity, adhesion, yellowing resistance & high build and protection to printed surfaces.
• It is recommended for overprint coatings (varnishes) for paper/paperboard, plastics, metals and wood.
• The shelf life of Photomer® 6008 is 12 months.
• It is available in Japan, Taiwan, South Korea and France.

UCECOAT® 7850 by allnex is a tin-, and bisphenol A-free, water-borne radiation curable (UV/EB) polyurethane dispersion which is tack-free before cure and after water evaporation. It was developed for wood coatings but can also be used for other applications. It is a low VOC and solvent-free technology grade.

• Because of its non-irritant nature and low viscosity, UCECOAT® 7850 can be applied safely by spray and curtain coating.
• The cured products are characterized by high flexibility and hardness.