Coating ingredients for Flexographic Inks

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.

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® IBOMA by allnex is a low viscosity, high purity, mono-functional isobornyl methacrylate monomer. It polymerizes when exposed to sources of free radicals and forms homopolymers & copolymers. It contains MeHQ (90-180 ppm) as stabilizer.

• It is compatible with a wide range of acrylated- and methacrylated resins.
• It is used as a co-agent to improve hardness, flexibility, chemical- and weather resistance of coatings.
• It is suitable for UV- and thermally cured applications like flexographic printing plates.
• EBECRYL® IBOMA has a shelf life of 2 years.

EBECRYL® 367 by allnex is a low VOC, solvent-free polyester acrylate designed to be used at additive levels in UV/EB inks and coatings to improve adhesion onto plastic substrates.

• It is bisphenol A (BPA)-, tin- free grade and offers low viscosity and low acidity.
• It exhibits low migration, long pot life, low color for clearcoat, faster cycle time, lower energy consumption and low flammability.
• It is suitable for use in radiation curable coating compositions, white flexographic inks, paints and overprint varnishes.
• It may be applied by flexography, inkjet and gravure, direct and reverse roll.
• The typical addition level is 10% by weight or more.
• The shelf life of EBECRYL® 367 is 6 months.

EBECRYL® PEG200DMA by allnex is a low viscosity, high purity difunctional monomer, polyethylene glycol di-methacrylate (PEGDMA). It polymerizes when exposed to free radical sources to form homopolymers and copolymers. It is non-toxic, non-sensitizing and non-irritant resin. It is designed for UV and thermally cured flexographic printing plates and coating formulations. It is compatible with a wide range of acrylated- and methacrylated resins. It is used as a co-monomer to improve mechanical performance and chemical resistance of acrylic polymers, unsaturated polyesters and polyolefins. EBECRYL® PEG200DMA can be stored for less than 2 years.

EBECRYL® 820 by allnex is a low viscosity polyester hexaacrylate having exceptional pigment wetting properties. This oligomer is a pigment grinding resin for all process colors and spot colors. It gives a fast cure response when formulated with other oligomers and cured via UV or electron beam (EB). It is developed to formulate UV/EB curable inks for flexography, lithography, gravure or potentially ink-jet and coatings for indirect food packaging. EBECRYL® 820 is ideal for the preparation of high pigment loading pastes using a triple roll mill or bead mill.

Photomer® 5429 distributed by DKSH is a low viscosity tetrafunctional polyester acrylate oligomer. It is used in UV/EB lithographic, gravure, screen, flexo ink- and multi-color printing applications.

• It is also used as spray, clear coatings for metal, paper, wood & plastics, and as a functional diluent for other high viscosity oligomers.
• It offers rapid cure, enhanced adhesion, reactivity, flexibility, hardness, scuff resistance, low viscosity and low color.
• Photomer® 5429 provides very good pigment wetting, flow and leveling characteristics due to low surface tension.
• The shelf life of the product is 12 months.
• It is available in Japan, Taiwan, South Korea and France.

Photomer® 4127 distributed by DKSH is a low viscosity monomer used to dilute oligomers. It exhibits a low surface tension & very low shrinkage and very good wetting properties for white and organic pigments.

• It offers excellent properties especially in applications where optimum flexibility is required.
• It possesses reactivity, flexibility, yellowing resistance, adhesion and pigment wetting properties.
• It is designed for use in UV/EB curable systems.
• It is used in wood, plastic, metal coatings and electronics market.
• It is applicable for over print varnishes for industrial uses, graphic arts, as well as screen printing and flexographic inks.
• Photomer® 4127 has a shelf life of 12 months.
• It is available in Japan, Taiwan, South Korea and France.

EBECRYL® 892 by allnex is a light color, low viscosity tetra-functional polyether acrylated oligomer. It also improves the hardness and solvent resistance of ultraviolet light or electron beam cured inks and coatings. It may be applied by screen, gravure, direct or reverse roll, and curtain coating methods. EBECRYL® 892 is particularly useful for lithographic offset inks, flexo inks and overprint varnishes. It is also ideal for coatings on paper, plastics & cardboard. The shelf life of this product is 2 years.

EBECRYL® LEO 10552 by allnex is amine modified, low viscosity polyether acrylate. Provides low extractables, low odor and low migration after UV or electron beam (EB) curing. It is produced following good manufacturing practices (GMP). Offers good cure response, good flexibility, and high gloss. Designed for overprint varnishes (OPV’s) and as the letdown for flexographic inks for indirect food packaging applications. EBECRYL® LEO 10552 is also used in screen and gravure applications.