Mowital® for adhesives

Polyvinyl butyral for adhesives

During the manufacture of epoxy resin adhesives, Mowital® is employed as a rheology modifier to improve the elastic and rheological properties of the products. Owing to the excellent adhesion of Mowital® to glass and metals, various Mowital® grades are used to bond or laminate these materials to other substrates. The Mowital® adhesive can be applied as a solution or by fusion (hotmelt). When solutions are used, at least one of the materials to be bonded must be sufficiently absorbent.

Hotmelts

The adhesive compounds are first prepared from the binder (Mowital®), the plasticiser and the appropriate additives in heated kneaders or extruders. These compounds are then applied to one of the substrates with heated rollers, nozzles or spray guns; later they are bonded by applying heat and pressure. When ­solvent-containing adhesives are used, the bond strength and ­reaction time can be controlled by using phosphoric acid (metal lamination).

Structural adhesives

During the manufacture of epoxy resin based adhesives, Mowital®–PVB is employed as rheology modifier to improve the elastic and rheological properties of the products. Owing to the excellent adhesion of Mowital® to glass and metals, various Mowital® grades are used to bond or laminate these materials to other substrates. Mowital® can be used in combination with other thermosetting resins (e.g. phenolic, epoxies, etc.) to provide higher bonding strengths to surfaces.

Mowital for adhesives

PROPERTIES

  • 1K and 2K formulations
  • Used in high strength structural adhesives
  • Improved substrate adhesion
  • Transparent and colorless
  • Non-toxic and nearly odorless
  • Soluble in alcohols/organic solvents
  • Compatible and curable with e.g. isocyanates or epoxy resins
  • Thermoplast, but curable to a duromer

APPLICATIONS

  • Hotmelts
  • Structural adhesives