Teckros® AF128 is a fumaric-modified rosin ester designed for alcohol-based flexographic and gravure "E" type printing inks. It has high acid functionality, ensuring solubility in amines and aqueous ammonia, making it suitable for waterborne flexographic and gravure inks. The product is compatible with modified rosins, polyketone, nitrocellulose, and shellac. It meets FDA 21 CFR 175.300 and FDA 21 CFR 175.105 certifications.

Chemical Family: Rosin Esters

Compatible Polymers & Resins: Modified Rosins, Nitrocellulose, Polyketone, Shellac

Glass Transition Temperature (Tg):: 70.0 °C

Technical Data Sheet

Enhanced TDS

Identification & Functionality

Applications & Uses

Properties

Soluble In
Soluble in
Alcohols, Amines, Ammonia
Compatible with
Nitrocellulose, Rosin, Other Resins, Polyketone, Shellac
Typical Properties
ValueUnitsTest Method / Conditions
Density (at 25°C)9.2lbs/gallon
Specific Gravity1.12--
Hydroxyl Value5--
Melt Viscosity (at 177°C)2200cPs-
Melt Viscosity (at 125°C)min. 50,000cPs-
Poly Dispersity1.3--
Glass Transition Temperature70°C-
Specifications
ValueUnitsTest Method / Conditions
Color (50T)max. 7-Gardner
Color (neat)max. 9-Gardner
Softening Point125 - 133°C-
Acid Value115 - 125--
Compatibility Information

Compatibility is excellent with nitrocellulose, shellac, polyketone, rosin, and other resins. Soluble in alcohols, aqueous ammonia, amines, and other solvents used in flexographic and gravure inks.

Regulatory & Compliance

Certifications & Compliance

Packaging & Availability

Packaging Information

Flaked or pastille form in 55 lb. bags