Poly(1,4-butylene adipate) is a biodegradable polyester oligomer commonly used in the production of biodegradable plastics and polymers. With an average molecular weight of around 3,000, it serves as a building block or additive to enhance biodegradability. It is often incorporated into materials like PBAT for eco-friendly packaging, agricultural films, and disposable products. Its flexibility and compatibility with other polymers make it suitable for blends that improve the environmental breakdown of conventional plastics. Additionally, it is utilized in the manufacturing of adhesives, coatings, and fibers, leveraging its biodegradability and mechanical properties.