Isobutylene With Isoprene Butyl Rubber

Butyl rubber, sometimes just called "butyl", is a synthetic rubber, a copolymer of isobutylene with isoprene. Butyl rubber is produced by polymerization of about 98% of isobutylene with about 2% of isoprene.
Butyl Rubber has good flex properties, resulting from low levels of unsaturation between long poly isobutylene segments. It also has a high level of heat resistance and excellent low-temperature flexibility. It has good shock absorption characteristics and low moisture and gas permeability and is used in many commercial applications.
Butyl Rubber is used in the manufacture of tyre inner liners, automotive tubes, ball bladders, adhesives, sealants, vibration mounts, electrical fluids and lubricants among others.