Adhesives, caulks and sealants

Imerys minerals make excellent functional mineral pigments in adhesives, caulks and sealants.

Kaolin such as our Argirec^™ B24 product are ideal for water-based adhesives such as polyvinyl alcohol used in high speed paper lamination for the production of graphic cardboard and corrugated board.

Argirec^™ B24:

• Provides the right rheology profile fostering low adhesive use per g/m2 to create adhesion
• Gives stable viscosity profile over a longer period of time ( good shelf life)
• Confers the correct balance between dosing concentration and viscosity level
• Provides kaolin color which is compatible with the color of test liner and craft liner paper substrates
• Is very suitable for ' high viscosity' water-based adhesives due to its high surface area and very fine particles
• Provides a good initial grab and green strength
• Provides durable bond between paper substrates with a defined quality in both low and high hydrolyzed polyvinyl alcohols

The platy shape of kaolin gives also good barrier properties in sealants by creating a tortuous path to protect the material that has been sealed.

Imerys platy talc's make excellent multifunctional fillers in caulks, adhesives and sealants where they:

• Are excellent thixotropes improving rheology
• Provide low adsorbed moisture
• Improve sandability due to their natural softness
• Improve dimensional stability, crack resistance and shrink resistance
• Make spreading easier

The needle-like structure of wollastonite makes it a highly effective functional filler in structural, high-temperature, pressure sensitive, hot melt, heat activated and UV curable adhesives and sealants where it provides:

• Improved mechanical properties
• Enhanced sag resistance
• Good rheology
• Cold temperature crack resistance
• Improved tensile strength