δ-Valerolactone is an important fine chemical intermediate, widely used in the synthesis of biodegradable polyurethanes, polyvalerolactone polyols, and biopharmaceutical materials. δ-Valerolactone not only undergoes self-polymerization at suitable temperatures to form highly biodegradable polycyclovalerolactone, but also undergoes ring-opening polymerization with other esters or compounds. It has a wide range of applications in environmental protection, pharmaceuticals, fluorochemicals, and biodegradable biomaterials, with significant economic and social benefits.
According to the "2021-2025 δ-Valerolactone Industry In-depth Market Research and Investment Strategy Recommendation Report" released by the Xin Shijie Industry Research Center, only a handful of companies in the United States, Germany, and Japan currently possess mature industrial production technology for δ-valerolactone. In China, only Puyang Maiqi Co., Ltd. has a single 1,000 t/a production line, which falls far short of meeting domestic market demand. my country's market demand primarily relies on imports, and foreign controls on δ-valerolactone raw materials and prices have limited the development and application of downstream products in China. Consequently, the domestic δ-valerolactone industry has experienced slow growth in recent years. δ-Valerolactone is an excellent organic synthetic intermediate with a wide range of applications, including the synthesis of optically active substances, biopharmaceutical materials, polyesters, and polylactides. δ-Valerolactone readily undergoes ring-opening polymerization, not only on its own to form high-molecular-weight polyesters, but also with other esters to form polylactides. Polylactides synthesized using δ-valerolactone and other raw materials exhibit excellent biodegradability and are used in medical wound treatments, exhibiting strong adhesion and easy absorption.
Currently, numerous methods for the synthesis of δ-valerolactone have been reported in China, most of which are still in the laboratory research stage. The methods with potential for industrial production are primarily the cyclopentanone oxidation method and the catalytic oxidation of 1,5-pentanediol. Numerous methods for synthesizing δ-valerolactone from other raw materials have been reported, such as the 1,5-glutaraldehyde method, the tetrahydrofuran method, the 2-butenoic acid methyl ester method, the 1,5-pentanediol method, and the 8-hydroxyvaleric acid method. However, the production of δ-valerolactone from these raw materials often requires harsh reaction conditions, requiring high temperatures and pressures, or involves numerous reaction steps, resulting in low yields and making industrial production difficult.
Industry analysts at Xin Shijie indicate that δ-valerolactone, as an important organic intermediate, holds broad application prospects in fields such as medicine, pesticides, cosmetics, and biodegradable materials. Currently, most products used in my country are imported. Limited raw material availability not only keeps product prices high, but also restricts its industrial application and development. The high dependence on imports for δ-valerolactone also demonstrates the enormous potential of the domestic market, suggesting a promising future for the δ-valerolactone industry.
