There are lots of uses of isobutylene including:
Butyl Rubber
Butyl rubber is known to have a strong resistance to chemicals as well as the weather and is also known for being airtight.
It is used in:
Sports equipment (fun fact: the bladder inside part of a football is made from butyl rubber)
The inner lining of tires (prevents issues with air in tires)
Engine mounts
Shock absorbers
Gaskets
Waterproofing applications
Manufacturing towards adhesives
Stoppers for vials
Medical gloves
Syringe plungers.
Commonly recognized as an additive for gasoline, it is manufactured by alkylation acid of isobutylene.
It is used in:
Medical applications
Solvents
paint thinner.
Isooctane
Butylated Hydroxyanisole (BHA)
It is created by alkylation of p-methoxyphenol combined with isobutylene.
It is used in:
Antioxidants
Cosmetics
Fragrances
Food packaging
Preserving Polymers and Coatings
Pharmaceuticals
Cereal and Confectionary products
Protection of Flavor and Coloring of Essential Oils
Preserving fat