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DeCAL 4201 is an acrylic binder ideally suited for use in waterbased flexographic inks for paper and corrugated board.
The product exists as an alkali soluble carboxylated copolymer emulsion but can also be supplied in its neutralized varnish form as DeCAL 4202. In both cases inks prepared using either DeCAL 4201 or DeCAL 4202 possess excellent machine stability/resolubility, viscosity/pH stability, favourable viscosity/dilution curves and excellent pigment wetting characteristics.
1. Typical Properties:
- Tg 35C
- Acid value 77mgKOH/g solid resin
- Initial softening point 100C
See Technical Data Sheet for more details
2. Applications: Neutralisation of DeCAL 4201 can be achieved using any suitable alkali or volatile amine. These include Ammonia, Monoethanolamine(MEA), Diethanolamine (DMAE), Aminomethyl propanol(AMP) or Triethanolamine(TEA). DeCAL 4202 is supplied pre-neutralised with the commonly used Monoethanolamine(MEA). DeCAL 4201 tends to swell considerably in the early stages of neutralisation. As a result it is recommended that the product be prediluted to with water prior to any neutralisation and then left to stabilise for several hours afterwards before use. For full solublisation of the polymer the pH must remain above pH 7 where it exhibits excellent pH/viscosity stability.
3. Compatibility: DeCAL 4201 and DeCAL 4202 are widely compatible with other acrylic, styrene-acrylic, PVA, polyesters and shellac resins. Both will tolerate various water soluble solvents such as glycol ethers alcohols and low boiling point esters and ketones, and general pigment compatibility is very good with excellent pigment wetting and colour development being achievable. More specific formulation details can be offered on request.
4. Other Uses: DeCAL 4201 and DeCAL 4202 are also suited for use as binders and modifiers for other systems such as waterbased paints and coatings for use in the art and craft, and paper coatings industries. Improvements in water and solvent resistance can be achieved via crosslinking through the free carboxyl groups in the polymers. Typical crosslinkers include Zirconium compounds, UF and MF resins and carbodiimides.
5. Safety & Handling: DeCAL 4201 and DeCAL 4202 should be handled in accordance with good industrial practice. Detailed information is provided in the Safety Data Sheet. We hope this information will be of value and if necessary we will be glad to offer additional technical advice. Please note that all our information is given in good faith, we can assume no responsibility for any liability incurred. Data and results should be confirmed by the Buyer by testing the product under its intended conditions of use. Version 0.0. 11.05.05
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