Polytone K-97

Flexographic and gravure inks, ballpoint pen inks

Application and Properties
Polytone K-Types are being used as an alternative binder in nitrocellulose combination lacquers (clear and pigmented) for wood and metal and in general industrial coatings. They contribute to a significant improvement of gloss and hardness as well as the adhesion improvement on different substrates (for example various plastics and metals). Polytone K-Types increase the solid content, which results in a reduction in the VOC.

In wood primers a rapid solvent release and a related higher drying speed or rather a faster sanding behavior is achieved through the use of Polytone K-Types. In pigmented systems Polytone K-Types improves the pigment loading capacity, so that even at high pigmentation, an excellent gloss can still be obtained.

Use of the resins in ballpoint pen inks and pastes ensure a fast drying of the ink on the paper after writing, without drying out of the ink in the writing instrument. With the addition of Polytone K-Types in paper lacquers a higher gloss and outstanding flexibility and abrasion resistance is achieved. The advantages of the resins in paper lacquers are their lightfastness and their brightness.

Solubility
Polytone K-Types are soluble in almost all solvents commonly used in the paint industry.

Easy soluble in:

  • alcohols
  • ester
  • some aromatic hydro carbon ketones
  • ether acetate
  • chlorine – hydro carbons

Insoluble in:

  • water
  • methanol
  • aliphatic hydro carbons

 

Compatibility with binders
Polytone K-Series are compatible with many coatings raw material including:

 

  • nitrocellulose
  • chlorinated rubber
  • melamine resins
  • benzyl cellulose
  • styrenated alkyd resins
  • maleic resins
  • ethyl cellulose
  • urethane acrylates

 

  • saturated polyester resin
  • cellulose acetate
  • aldehyde resins
  • polyamide resins
  • polyvinyl chloride
  • ketone resins
  • modified phenolic resins
  • vinyl chloridcopolymer

Limited compatibility with:

  • acryl resins
  • calcium resinates

Recommended storage conditions
Store under cool dry conditions; storage temperature above 30°C should be avoided. When stored under proper conditions the product has a shelf life of 12 month from the date of manufacture.

Packaging
Available in 25-kg-bags.

Product Melting point[°C] Viscosity at 25 °C; 50 % solution in alcohol; B-4 fC in sec [cPs] Acid number [mg KOH/g] max. Hydroxyl number [mg KOH/g resin] Iodine value, 50 % solution in alcohol max.
Polytone K-97 110–120 22–25 ≤ 0.5 230–250 1