For example, butyl rubber caulk is a heavy-duty product for external application on brick and concrete. It's tough enough to ...

Today, most chewing gum contains a substance called polyisobutylene, the main ingredient in butyl rubber, which is also used in making inner tubes. This change was primarily for durability ...

Rubber can be categorized as natural rubber, or synthetic rubber. Many substances, such as butyl rubber, Thiokol, or neoprene are used as synthetic rubber. An elastomer must have high molecular ...