Polyamide (PA) Resins for Coatings and Inks

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.

CASAMID® 876 by Thomas Swan is an alcohol-soluble polyamide resin. It provides strong film formation upon solvent evaporation, enhancing print quality and rub resistance. Its excellent solubility profile makes it particularly well-suited for use with a wide range of solvents and co-resins, enhancing formulation flexibility.

• It is used in combination with nitrocellulose to improve ink performance, contributing to superior print quality and resistance properties.
• It provides high resistance to moisture, abrasion, and wear in packaging inks.
• It features enhanced flow properties for smooth ink application and reduced clogging.
• It delivers sharp print definition and strong adhesion in flexographic printing inks.
• CASAMID® 876 provides excellent flow and leveling for deep, rich prints in gravure printing inks.
• It gives anti-blocking and gelation resistance to formulations.
• It offers protection, gloss, and durability in lacquers and coatings.
• It ensures strong bonding performance in lamination inks for multi-layer packaging.
• It is optimized for overprint varnishes, providing smooth coverage.
• It has a shelf life of 12 months.

CASAMID® 878 by Thomas Swan is an alcohol-soluble polyamide resin. It provides superior anti-blocking properties, preventing layers from sticking together.

• It has a high melting point (140-150°C), offering exceptional thermal stability for demanding applications.
• It features a low odor formulation, ideal for sensitive packaging and coating uses.
• It ensures excellent film formation upon solvent extraction for high-quality, durable prints and coatings.
• It prevents premature gelation, though higher alcohols or hydrocarbon solvents may be needed for added stability.
• The amide groups interact with pigments and substrates, ensuring optimum dispersion, gloss, and rub resistance.
• It enhances durability in printing and coating applications.
• CASAMID® 878 delivers superior adhesion and print quality in specialized flexographic ink applications.
• It offers excellent release properties and durability in release lacquers.
• It is optimized for overprint varnishes, providing smooth coverage.
• It provides strength and barrier performance in coatings.
• It ensures long-lasting resistance to heat, abrasion, and environmental factors in high-performance packaging inks.
• It has a shelf life of 12 months.

CASAMID® 843W by Thomas Swan is an alcohol-reducible thermoplastic polyamide resin modified with wax. It combines the features of both alcohol-soluble and alcohol-reducible polyamides.

• It provides broad solvent compatibility.
• It has low static and dynamic coefficients of friction.
• Its excellent gelation resistance offers high-speed printing and improved ink transfer.
• CASAMID® 843W has very low odor, suitable for indirect food contact and hygiene-sensitive sectors.
• It has a thermoplastic nature that aids in fast drying and re-solubility during multi-pass printing.
• It improves print clarity and scuff resistance in flexographic and gravure surface inks, especially on polyethylene and BOPP.
• It enhances slip, anti-blocking, and rub resistance in overprint varnishes and lacquers used for flexible packaging.
• It ensures odor neutrality and a smooth finish in personal care packaging for sensitive applications.
• It provides reliable release properties in cold-seal and release lacquers without additional modifiers.
• It is optimal for achieving smooth coating flow and excellent film formation in specialty coatings for films.
• For enhanced surface properties, it can be blended with 5–10% standard polyamides or nitrocellulose systems.
• It is recommended to use 15–30% resin solids in the total formulation for inks and overprint varnishes.
• It has a shelf life of 12 months.

CASAMID® 1752 by Thomas Swan is a high-performance co-solvent polyamide resin. It is designed for ink and coating systems, offering excellent compatibility with various alcohols and esters.

• It can be blended with nitrocellulose or other film formers to improve mechanical strength and chemical resistance.
• It provides high heat resistance and melt viscosity, ensuring long-lasting performance.
• It enhances substrate wetting and flow, resulting in uniform and high-quality printing.
• It offers optimized gel recovery, controlled adhesion, and clean release in cold-seal release lacquers during high-speed packaging.
• It is a high viscosity resin similar to CASAMID® 831 but has a slightly lower gel recovery temperature.
• It ensures excellent adhesion in flexible packaging inks for both reverse and surface print on various substrates including treated films and foils.
• CASAMID® 1752 enhances packaging integrity and performance under thermal stress in heat-seal coatings.
• The polyamide matrix builds a flexible and tack-free dry film that adheres well to various treated plastic films.
• It acts as a thermoplastic film-forming binder that enhances cohesion and gloss.
• It prevents sticking during storage and transport in specialty coatings.
• It is also recommended for flexographic printing formulations, requiring anti-blocking and gelation resistance.
• It is optimized for overprint varnishes, providing smooth coverage.
• It has a shelf life of 12 months.

CASAMID® 873 by Thomas Swan is an alcohol-soluble polyamide resin. It enhances ink performance by forming a flexible, durable film upon solvent evaporation. It offers excellent nitrocellulose compatibility and high softening point.

• It offers superior gelation resistance, preventing premature thickening during storage and application.
• It is particularly suited for high-performance food packaging inks due to its low odor formulation with stringent regulations.
• Its excellent solubility characteristics enable easy formulation in alcohol-based ink systems, ensuring smooth ink application and uniform print quality.
• CASAMID® 873 ensures smooth print quality, excellent adhesion, and fast drying in flexographic printing inks.
• It provides durability, anti-blocking properties, and enhanced gloss in lacquers and overprint varnishes, preventing adhesion between ink layers.
• It delivers superior bonding strength in lamination inks and enhances abrasion resistance in industrial coatings.
• It provides enhanced rub resistance, improving the longevity of printed materials.
• It has a shelf life of 12 months.

CASAMID® 879 by Thomas Swan is a general purpose, alcohol soluble thermoplastic polyamide resin. It enhances ink and coating performance by forming a strong, durable film upon solvent evaporation. It is optimized for high-speed printing with fast drying times, enabling higher press speeds and increased productivity.

• It provides uniform ink coverage, reducing defects and improving print consistency.
• It delivers excellent press performance through good flow, minimizing downtime and maintenance.
• It offers outstanding gelation resistance, preventing premature thickening during storage and use.
• It ensures exceptional water resistance for durability in humid or moisture-prone environments.
• CASAMID® 879 is recommended for lacquer formulations featuring strong anti-blocking properties.
• It prevents ink layers from sticking together.
• It offers smooth coverage, and superior adhesion for flexographic packaging applications.
• It is used in laminating inks for multi-layer packaging applications due to its high bond strength.
• It is used in overprint varnish enhancing gloss, abrasion resistance, and overall print quality.
• It has a shelf-life of 12 months.

CASAMID® 831 by Thomas Swan is a thermoplastic, non-reactive co-solvent polyamide resin. It offers good lay, while exhibiting limited gelation resistance and low tolerance to polar solvents.

• It delivers the highest performance in alcohol-hydrocarbon systems and also stabilizes pigment dispersion.
• It is used in flexible packaging applications such as gravure inks on OPP, PE, and PET films, providing fast drying, high adhesion, and strong color holdout.
• It offers excellent flow, anti-blocking resistance, exceptional ink transfer, strong film integrity, wetting, and solvent release for inks such as flexographic inks.
• CASAMID® 831 is used in publication and graphics applications, including inks for catalogues, labels, and decorative film prints, ensuring smooth laydown and sharp definition.
• It is also used in industrial coatings, including polyamide-modified nitrocellulose lacquers or phenolic blends, to enhance hardness and flexibility.
• It is used in overprint varnishes as topcoats for printed films, providing mechanical protection along with high gloss, and clarity in clear lacquer systems.
• It is compliant with FDA 175.320 guidelines.
• It has a shelf life of 12 months.

CASAMID® 872 by Thomas Swan is a medium-viscosity, alcohol-soluble polyamide resin. It is highly compatible with nitrocellulose, supporting flexible formulation adjustments for a wide range of solvent-based ink systems.

• It has lower water resistance than CASAMID® 873, 874, and 876, but its strong anti-blocking properties make it ideal for inks where preventing layer adhesion is critical.
• It offers balanced flow, good abrasion resistance and optimal film formation.
• It features a low odor profile, ideal for packaging applications.
• CASAMID® 872 provides excellent gelation resistance, minimizing storage and application issues.
• It provides smooth and uniform ink flow, excellent adhesion, and consistent print quality in flexographic printing.
• It delivers a durable, protective finish in lacquers and coatings.
• It enhances the gloss and protective qualities of overprint varnishes without compromising the ink performance.
• It has a shelf life of 12 months.

CASAMID® 833 by Thomas Swan is a co-solvent polyamide resin. It acts as a film-forming binder that enhances adhesion, print quality, and flexibility of ink systems.

• It provides excellent adhesion to treated polyolefin substrates with good re-solubility in press.
• It offers superior compatibility with phenolic resins, nitrocellulose, alcohol, hydrocarbons, and esters.
• It is used in laminating inks to enable strong bond development with minimal solvent retention when properly formulated.
• It is also used in flexible packaging for food and consumer goods, offering excellent adhesion on films such as BOPP and treated polyethylene, along with good print definition.
• CASAMID® 833 enables excellent pigment dispersion and re-solubility properties in flexographic and gravure applications.
• It offers anti-blocking and gelation resistance in formulations.
• It is used in cold-seal release lacquers, providing high alcohol tolerance for reliable release performance and excellent stability on high-speed presses.
• It is optimized for overprint varnishes, providing smooth coverage, enhanced abrasion resistance and improved gloss.
• It has a shelf life of 12 months.