Product Description
The KALENE products are low molecular weight, liquid polymers of butyl rubber. They vulcanize at either ambient or elevated temperature with the standard curatives for butyl rubber. These liquid polymers contain no solvents or additives. Royal Elastomers offers two grades that differ in molecular weight and viscosity. Both are extremely viscous liquids that require either heat or solvent to flow freely. KALENE products provide gas impermeability, chemical resistance, moisture resistance, good electrical properties, and excellent sound damping qualities.

Typical Applications
The KALENE products impart the performance benefits of butyl rubber and provide the processing convenience of a liquid. They make convenient bases for sealants, coatings, and adhesives. These coatings have higher solids than those based on butyl rubber because the KALENE products are liquids. KALENE’s butyl properties impart chemical resistance to a wide variety of sealants and adhesives. Underwater marine and roof coatings take advantage of the resistance to salt and fresh water. Such applications as tank linings and coatings utilize the chemical and moisture resistant properties. The KALENE products provide tack to pressure sensitive adhesives, and they improve the adhesion of butyl-based adhesives and sealants. They also act as reactive plasticizers for conventional butyl to improve compounding efficiency.

Since they cure by the same mechanism as butyl rubber, they become part of the polymer matrix. They are non-fugitive.