Ottopol 25-50E

Superior Printing Qualities

• Ottopol 25 Series’ unique characteristics impart excellent flow and leveling to inks and coatings, making gravure print quality possible that could only be attained with solvent systems in the past. The viscosity curve of this resin is relatively flat and shows a very low degree of thixotropy. The result is superior printing quality.

Good Pigment Wetting

• High industry standards are met when Ottopol 25 Series is used as a dispersion stabilizer, or purely for wetting purposes. Optimum color development is achieved with a large variety of pigments.

Excellent Gloss

• The rheological properties of Ottopol 25 solutions contribute to high gloss, while the use of maximum amounts of alcohol will increase the gloss of this resin.

Excellent Adhesion to Substrates

• On PVC, Polyester, Polystyrene, and Coated Cellophane, this series of polymers provide excellent adhesion.

Ottopol 25-50E must be converted to a solution. Ammonia @ 28% concentration will yield the fastest drying speed. Organic amines will delay the drying process and may be used if applicable. The point of neutralization can be calculated, given the acid number of 130. A varnish containing 30% dry resin will have an approximate viscosity of 4,000 cps (Ottopol 25-30). Higher solids, increased drying speed and lower viscosity can be achieved by substituting Isopropyl Alcohol for water. The resulting viscosity will be 400 cps @ 40% Solids.

30% Solids Base Varnish

40% Solids Base Varnish

Procedure: Dilute 25-50E and mix thoroughly before adding ammonia.