2‑methylprop‑1‑ene, commonly known as isobutylene, is a C4‑hydrocarbon used as a pivotal feedstock for MTBE, polyisobutylene, TBA and other high‑value derivatives. Its strategic relevance stems from its role in fuel additives, adhesives, and elastomers, making it a cornerstone of the global petrochemical value chain.
The 2‑methylprop‑1‑ene market size is projected at approximately USD 11.2 billion in 2025, with a robust growth outlook driven by expanding automotive fuel‑additive demand and rising construction‑chemical consumption. This market forecast underscores an anticipated CAGR of 4.8% from 2026 to 2033, reflecting sustained industry expansion across mature and emerging economies.