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Ottopol 25-50E

Sold by Gellner
Function: Binder, Grinding Aid
Chemical Family: Acrylics & Acrylates
Compatible Polymers & Resins: Polystyrenes (PS), Polyesters, Polyvinyl Chloride (PVC), Cellulose & Cellulosics
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TypeDocument Name
Technical Data Sheet
Ottopol 25-50E Technical Data Sheet
Ottopol 25-50E Technical Data Sheet
Technical Data Sheet
Safety Data Sheet
Ottopol 25-50E Safety Data Sheet
Ottopol 25-50E Safety Data Sheet
Safety Data Sheet

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Identification & Functionality

Ottopol 25-50E Features & Benefits

Product Highlights

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.

Applications & Uses


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

Materials Parts by Weight
Ottopol 25-50E 60.0
Water 35.2
Aqua Ammonia 28% 4.8
Total 100


40% Solids Base Varnish

Materials Parts by Weight
Ottopol 25-50E 80.0
Isopropyl Alcohol 14.4
Aqua Ammonia 28% 5.6
Total 100


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


Physical Form
Milky white
ValueUnitsTest Method / Conditions
pH6.5 - 7.5--
Solids Content49.0 - 51.0%-
Specific Gravity1.087--
Glass Transition Temperature43°C-
Viscosity 250 - 2000 cps-
Weight / Gallon8.91lbs-

Regulatory & Compliance

Chemical Inventories
Ottopol 25-50E