Mowital® and PIOLOFORM

Kuraray Mowital and PIOLOFORM (polyvinyl butyral) are a building blocks for specialty coatings and films, including Kuraray TROSIFOL. Based on Kuraray POVAL (PVOH), Mowital and PIOLOFORM are created by acetalising POVAL using butyraldehyde. Varying recipes of polyvinyl butyral allow for flexibility in applications, from glass film to specialty inks and coatings.

Molecular Structure

The molecular structure of Mowital is best described as a terpolymer consisting of  of polyvinyl alcohol, polyvinyl acetate and polyvinyl butyral sequences. Varying the ratio of these sequences will affect the properties of Mowital, allowing the characteristics to be fine-tuned to our customer’s needs. This includes: solubility in various solvents and their compatibility with other polymers, and chemical reactivity to other polymers. Thus, like in polyvinyl alcohol (Kuraray Poval), the residual OH-groups of the polyvinyl butyral polymer chain will undergo cross-linking reactions with compatible (di-)isocyanates, epoxy-molecules, urea-, phenolic- or melamine-resins.

  • Fine-grained, free-flowing white powder
  • Glass transition temperature ranges from 60° to 84°C
  • Strong adhesion properties on various substrates
  • Excellent pigment wetting
  • Low viscosity
  • Ability to bond to metal, ceramics, and other inorganic materials
  • Strong film-forming properties
  • Optical clarity in film form
  • Toughness
  • Flexibility
  • Cracking resistance
  • Excellent thermoplastic proccessing
  • Improves adhesion and gloss in inks
  • Improves ink wetting without diluting pigment
  • PVB allows for less ink to be used while still providing intense shades and colors
  • Printing inks: flexoinks, inkjet inks, special gravure inks, pigmenting, and thermotransfer inks
  • Paints and coatings
  • Binder for reflective sheet and magnetic media
  • Adhesives
  • Specialty papers
  • Temporary binders for ceramics
  • Laminated safety and architectural glass (TROSIFOL)
  • Photovoltaic film (TROSIFOL)
  • Dye transfer ribbon inks
  • Raw material in TROSIFOL
  • Food Packaging Inks
  • Retroreflective coatings for traffic signs and road markings