聚合度 d= degree of polymerization; drgree of polymerization; polymerization degree; polymerization grade; zero of polymerization 聚合-解聚平衡 polymerization -depolymerization equilibrium .
The raw product from hydrogenation is continuously rectified. 1,4-Butanediol from continuous rectification is subject to PBT polymerization test, and is found to be up to the polymerizationgrade.