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.

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.

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.

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® 578 by allnex is an inert resin diluted in trimethylolpropane ethoxylate triacrylate (TMPEOTA). It possesses medium viscosity, and is VOC-, chloride- and solvent-free. It is developed for ultraviolet light (UV) or electron beam (EB) cured offset lithographic inks and coating.

• It provides good adhesion to various substrate such as metallic and plastic materials.
• It exhibits good pigment wetting and high reactivity and cure speed, and low color for clearcoat.
• EBECRYL® 578 is used in other applications such as screen, gravure, flexo and overprint varnish.
• It has a shelf life of 2 years.

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.

TR-BP distributed by DKSH is a very cost effective, regular free radical photoinitiator. It is recommended for UV curing varnish and inks. It exhibits low-yellowing and excellent pigment wetting properties.

• It is used in coating and printing ink.
• It can be used in UV pigmented coatings for wood, metal, plastics, powder coatings, and intermediate of organic pigment.
• It has peak absorption wavelength of 210nm and 255nm.
• TR-BP is available in Austria, Belgium, Bulgaria, Croatia, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Italy, Latvia, Lithuania, Luxembourg, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, and United Kingdom.

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.

EBECRYL® 350 by allnex is a silicone diacrylate that improves slip, substrate wetting, coating flow and leveling when used as an additive in formulations cured by ultraviolet light (UV) or electron beam (EB). Cured films containing EBECRYL® 350 exhibit a smooth, tack-free surface, with good blocking resistance. Because of its acrylate functionality, the silicone cures into the polymeric backbone, thus eliminating the migration that free silicone often display in coatings. It is recommended for overprint varnishes, clear coatings on paper, plastics and metal and release coatings. The shelf life is 2 years.

EBECRYL® 8413 by allnex is a low/zero VOC, solvent-free, pigment grind urethane oligomer. It is used in conjunction with a letdown oligomer, EBECRYL® 1300 to develop non-blocking thermoformable inks suitable for first and second surface applications. It possesses light color and very high elongation at break, and exhibits high gloss, excellent flexibility and good milling properties. It provides good compatibility, long potlife, faster cycle time, low temperature curing and lower energy consumption.

• It offers block-, scratch- & temperature resistance, and good adhesion to a variety of untreated plastic substrates including polycarbonate (PC), polystyrene (PS), polyvinylchloride (PVC), polyester, acrylic and glycol modified polyethyleneterephthalate (PET-G).
• It does not require corona discharge or flame pretreatment.
• UV cured thermoformable inks exhibit tack-free state after cure, low shrinkage (1.2%), and excellent intercoat adhesion.
• Formulated products containing EBECRYL® 8413 may be applied via flatbed screen methods and are recommended for use in screen inks in markets such as displays, signage, POP, vending machine panels, packaging, sporting goods, architectural, electronics, appliance nameplates, housing, toys and novelty items.
• It is also recommended for elastomers application by 3D printing, providing great shape recovery.