Materials for the pharmaceutical industry need to meet very high standards since pharmaceuticals are ingested into the body.

LANXESS has developed a new patented polymerization process for the manufacture of high isoprene butyl rubber that meets the requirements of the pharmaceuticals industry. This new high isoprene butyl rubber is exceedingly impermeable, as well as very durable and can be used in making rubber closures for medicine bottles and inner linings, for example.

In reality, the new butyl rubber has even more to offer. Due to its high bonding density, it can now be combined with peroxide to enable new applications such as seals for aluminum electrolytic capacitors for the electronics industry and high-performance rubber soles for the footwear industry.