Casamid® Polyamide Resin Binders – Alcohol Soluble
Casamid® Polyamide Resins Versatile Binders for Flexographic & Rotogravure Printing Inks.
Casamid® polyamide resins are high-performance binders, co-binders, and modifiers used in flexographic and rotogravure inks and varnishes. Known for their excellent adhesion, flexibility, and durability, they’re trusted in demanding print applications where performance matters.
Sustainable Chemistry
Casamid® resins are synthesised from dimerised fatty acids, diamines, and chain terminators, with up to 90% renewable content—offering a sustainable solution without compromising performance.
Solubility & Formulation Flexibility
Solubility depends on the grade:
• Some are alcohol-soluble
• Others require co-solvent blends (e.g. petroleum spirits or aromatics)
Thomas Swan provides expert support to help formulators select the ideal Casamid grade for their solvent system, printing process, and performance goals.
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Casamid® Polyamide Resin Binders – Alcohol Soluble
✔ Strong adhesion to plastic films
✔ Excellent flexibility and durability
✔ Compatible with a wide range of resins and additives
✔ Ideal for both flexo and gravure systems
What’s the difference between co-solvent soluble and alcohol-soluble Casamid® polyamide resins?
Casamid® polyamide resins are designed for flexibility in ink formulation, and their solubility profile determines how they integrate into your solvent system:
Alcohol-Soluble Grades
These resins dissolve directly in alcohols (such as ethanol or n-propanol) without the need for additional solvents. They are ideal for ink systems where alcohol is the primary carrier, offering simplified formulation and faster processing.
Co-Solvent Soluble Grades
These require a blend of solvents—typically alcohol combined with hydrocarbons (e.g., petroleum spirits) or aromatic solvents—to achieve full solubility. Co-solvent grades provide greater formulation latitude and can enhance properties like gloss, adhesion, and printability on challenging substrates.
Choosing the Right Grade:
The best option depends on your printing process, substrate, and performance requirements. Alcohol-soluble grades are preferred for high-speed flexo systems with quick-drying needs, while co-solvent grades are often selected for gravure inks or applications demanding superior film properties.
For tailored recommendations, Thomas Swan’s technical team can help you select the optimal Casamid® grade for your solvent system and performance goals.
Additional Information
| Casamid® | Melt. Pt /°C | Melt Viscosity poise @ 160 °C | Molecular Wt (Mw/Mn) | (1) Solution Visc. /Zahn Cup 2, 25 °C | Suggested Uses | Resin Features | |
|---|---|---|---|---|---|---|---|
| Co-solvent | 831 | 105 – 115 | 25 – 40 | 14k / 3k | 43 – 65 seconds | Gravure inks and lacquers | Excellent solvent-release |
| 833 | 100 – 110 | 10 – 18 | 13k / 3k | 30 – 46 seconds | Gravure and flexographic inks and lacquers | Enhanced solubility | |
| 1752 | 105 – 115 | 25 – 40 | 18k / 4k | 45 – 60 seconds | Specialist ink and lacquers | Enhanced gel-recovery | |
| Alcohol-Reducible | 843W | 110 – 120 | 5 – 8 | 7k / 2k | 24 – 36 seconds | Specialist ink and lacquers | Waxed resin |
| Alcohol-Soluble | 872 | 115 – 125 | 2.5 – 4.5 | 5k / 2k | 19 – 29 seconds | Flexographic inks and lacquers | Good gelation-resistance and anti-blocking properties |
| 873 | 120 – 130 | 1 – 3 | n/a | 16 – 24 seconds | Flexographic packaging inks | Good water-resistance and low odour | |
| 874 | 105 – 115 | 1.5 – 3.5 | 5k / 2k | 18 – 27 seconds | Flexographic inks | Good water-resistance | |
| 876 | 105 – 115 | 1.5 – 2.5 | 4k / 2k | 16 – 24 seconds | Flexographic inks | Good ester-tolerance | |
| 878 | 140 – 150 | 2 – 3 | 4k / 2k | 17 – 27 seconds | Specialist flexographic inks and release lacquers | High melting-point and enhanced anti-blocking | |
| 879 | 105 – 115 | 1.5 – 3.5 | 4k / 2k | 18 – 27 seconds | Flexographic inks | Improved speed-of-dry | |
| (1) Solution = Resin 35% : n-propanol 65% | |||||||
