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Butyl group - Wikipedia
Butyl rubber - Wikipedia
Butyl Definition & Meaning - Merriam-Webster
All About Butyl Rubber – Properties, Applications, and Uses
Butyl Group - Introduction, Butyl Structure, Preparation and Uses …
Butyl rubber (IIR) | Britannica
Butyl Group | Overview, Structure & Formula - Lesson | Study.com
Material Breakdown: What is Butyl Rubber?
All About Butyl Rubber - Properties, Applications, and Uses
Butyl group | Encyclopedia.com