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Ottopol K-23 is a cationic acrylic copolymer emulsion used for alkali resistance and adhesion to non-porous substrates. It is designed for use as a grinding and letdown vehicle for water-based flexographic and rotogravure inks. It is also suitable for use as an overprint varnish.

Functions: Binder & Resin, Grinding Aid

Chemical Family: Acrylics & Acrylates

Compatible Substrates & Surfaces: Paper, Plastics, Textiles

Knowde Enhanced TDS

Identification & Functionality

Carrier
Chemical Family
CASE Ingredients Functions
Technologies

Features & Benefits

Product Highlights

Cationic Emulsion

  • Ottopol K-23 is an alkali resistant cationic acrylic copolymer emulsion. The emulsion characteristics provide higher solids and better gloss.

 

Alkali Resistance

  • Unique to the graphic arts industry. Ottopol K-23 has excellent alkali and detergent resistance. Inks and coatings for soap boxes and paper towels will not be effected by the high pH content or detergent cleaners used with towels.

 

Adhesion to Dfficult Substrates

  • Positive charge allows inks and coatings made with Ottopol K-23 to have exceptionally good adhesion to plastic films; Polyethylene, PVC, Polyester, and Polystyrene.
Product Attributes
  • It is designed for use as a grinding and letdown vehicle for waterbased flexographic and rotogravure inks.
  • It is also suitable for use as an overprint varnish.
  • The emulsion characteristics provide higher solids and better gloss.

Applications & Uses

Compatible Substrates & Surfaces
Formulations

Flexographic Inks

Materials Parts by Weight -1 Parts by Weight -2 Parts by Weight -3
Ottopol K-21-30 20 20 15
Water 14 14 14
Ba-Li Red 15    
Phthalo Blue   15  
TiO2     35
Ottopol K-23 50 50 35
Slip Additive 1 1 1
Total 100 100 100

Procedure: Place all components into a mill and grind until the desired gage reading is attained.

 

Alkali Resistant Overprint Varnish

Materials Parts by Weight -1 Parts by Weight -2
Ottopol K-23 63 60
Ottopol K-21-30 30 30
Water 6 3
Cationic Wax Emulsion   7
Slip Additive 1  
Total 100 100

Procedure: Place all components in the order listed into a mix tank. Stir while adding the individual components. Continue stirring until the finished product is homogeneous

Important! Adjust pH of finished inks and coatings to 4.8 - 6.0 using acetic or formic acid.

Properties

Physical Form
Appearance
Milky translucent liquid
Specifications
ValueUnitsTest Method / Conditions
Freeze Thaw Stability5 Cycles--
Glass Transition Temperature26°C-
pH5.0 - 6.0--
Solids Content41.0 - 43.0%-
Specific Gravity1.073--
Viscosity 200 - 500 cps-
Weight / Gallon8.95lbs-

Regulatory & Compliance

Chemical Inventories