Coating ingredients for Varnishes / Over Print Varnish (OPV)

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.

THIXATROL® ST by Elementis acts as a rheological additive for use in aliphatic and aromatic solvent-based coatings. It is an organically modified castor oil derivative. It provides increased viscosity, thixotropy, pigment suspension and sag control. It improves the flow and leveling of powder coatings. It is suitable for chlorinated rubber- and decorative coatings, traffic- and anti-fouling paints.

• It offers controlled penetration into porous substrates and imparts excellent package stability and reproducibility.
• It shows no adverse effect on paint durability and no influence on water-resistance of organic systems.
• It is non-yellowing in the final formulation and does not normally react with system components.
• THIXATROL® ST is used in epoxies, polyurethanes, varnishes, air dry industrial-, high build- and hammer finishes.
• The recommended dosage level is 0.2-0.8% by weight.
• It has a shelf life of 4 years.

WANNATE® BIO PDI by Wanhua Chemical is an aliphatic pentamethylene diisocyanate. It is a low viscosity and less irritant liquid at room temperature. It is raw material of bio-based polyurethanes. It offers lightfastness, powdering resistance, good color retention, and weathering resistance.

• It exhibits high degree of oil resistance coupled with good wear-resisting.
• It is used in PU varnish, top-grade coatings, car refinishing paint, plastic coating, top-grade wood paint, industrial coating and anti-corrosive coating.
• It is suitable for coating curing agent and collar copolymer coating.
• WANNATE® BIO PDI has a shelf life of at least 9 months when stored at temperatures between 0 and 30°C.

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.

CASAMID® 874 by Thomas Swan is a general purpose, alcohol-soluble polyamide resin. It forms a cohesive, durable film upon solvent evaporation. It offers high blocking resistance and water resistance, making it ideal for packaging requiring moisture protection.

• It provides enhanced gelation resistance, ensuring stable formulations and preventing premature thickening.
• It has excellent solvent compatibility, allowing flexible ink formulations while maintaining strong adhesion.
• It requires less nitrocellulose than conventional resins, simplifying formulations and reducing costs.
• It is broadly compatible with alcohol-based solvents and ink additives, enabling easy formulation adjustments.
• CASAMID® 874 improves pigment dispersion for vibrant and consistent color development.
• The amide groups interact with the substrate and pigments, enhancing gloss and abrasion resistance, making them ideal for flexible packaging and printing applications.
• It delivers excellent print quality, superior adhesion, and strong resistance in flexographic inks and lacquers.
• It is used in laminating inks for multi-layer packaging applications due to its high bond strength and flexibility.
• It is optimized for overprint varnishes, providing smooth coverage.
• It ensures reliable performance in both industrial and packaging coating applications.
• It has a shelf life of 12 months.

SETAL® 270 EHV WS-70 by allnex is an air drying long oil alkyd resin based on soyabean oils. Exhibits good color fastness, brushability, body and flow, good durability and good through hardening. Market applications of SETAL® 270 EHV WS-70 include architectural paints (finishes on wood and metal), for interior and exterior use, do-it-yourself paints, semi-gloss finishes, alkyd resin varnishes, wall paints. It is also used in boat & yacht coatings, structural steel paints and marine paints.

Bentone® 1000 by Elementis is a highly efficient and cost-effective rheological additive designed for use in low to intermediate polarity organic systems. It is organic derivative of bentonite clay. It is easy to use and exhibits consistent rheological properties.

• It eliminates need for pregels and the need for chemical activators in conventional solvent-based systems.
• It is used in trade sales paints, varnishes, light industrial finishes, asphaltic-based coatings, industrial maintenance and marine coatings.
• Recommended dosage level is 0.2-1.0% for most paint application and above 1.0% by weight for systems containing conventional rheological additive.
• Bentone® 1000 has a shelf life of 4 years.

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.