Coating ingredients for UV / Radiation-curable Inks

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.

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.

DEGALAN® P 28 N distributed by DKSH is a granulated polymer based on methacrylates. It is a binder for the manufacture of plastic-, masonry and metal coatings and UV printing inks.

• It is particularly suitable as a drying accelerator in alkyd varnishes.
• It is compatible with polyolefin substrates including PP and PE, short- and medium-oil & many long-oil alkyd resins, with most plasticizers, vinyl resins and nitrocellulose.
• It provides sufficient adhesion to the substrates by applying primer and corona pre-treatment.
• It possesses universal solubility, excellent chemical resistance and light-fastness.
• DEGALAN® P 28 N shows good compatibility with other printing ink raw materials and pigments.
• The shelf life of the product is 5 years.
• It is available in Belgium, Canada, Indonesia, Luxembourg, Netherlands, Philippines and Vietnam.

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.

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.

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.

MULTIMOD™ APT-W1 by Macroocean is a linear polyester based, adhesion promoter. It can improve the adhesion to substrates or coatings of different paint & ink systems. This grade can be dissolved in ketone, ether or esters type of solvents, which is usually dissolved with aromatic solvents, such as 100# & 150#, etc. And it can be dissolved in UV monomers, such as HDDA and TPGDA. It can be used in solvent-based, solvent-free and UV curing systems. MULTIMOD™ APT-W1 shows excellent adhesion improvement on steel, aluminum and plastics. It improves the intercoat adhesion, corrosion protection and flexibility. It is used in industrial-, coil-, can- & architectural coating and screen printing ink. Recommended addition for above applications: solid calculated on binder solid: 3-15%. It is in full compliance with FDA 175.300, also for alcoholic contents. The shelf life of this product is 24 months.

EBECRYL® 3701 by allnex is a VOC-, solvent- and tin-free, modified bisphenol A epoxy diacrylate. It imparts flexibility and toughness to ultraviolet light (UV) or electron beam (EB) cured coatings and inks, while maintaining fast cure response and superior chemical resistance that are typical of standard epoxy acrylates.

• It provides high gloss, and good abrasion and impact resistance.
• Formulated UV/EB curable products containing EBECRYL® 3701 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.
• It is recommended for clear coatings for paper, wood and rigid plastic, as well as lithographic, screen and flexographic ink vehicles.

EBECRYL® 7100 by allnex is an acrylate-functional amine resin generally used as as a hydrogen donor or photo-activator. When used in formulations with a photoabstraction type photo-initiator (e.g. benzophenone), it has an accelerating effect on the UV cure speed. It is characterized by low viscosity, light color, improved stability and excellent pigment wetting. It offers lower residual odor, improved moisture resistance and high gloss. It also promotes adhesion to plastic substrates such as polyester, ABS, polycarbonate and polypropylene oxide. EBECRYL® 7100 is recommended for coatings for plastics, clear coatings for paper, overprint varnishes, screen ink vehicles, metal decorating inks, wood fillers and accelerating UV cure response.