| 摘要 |
<p>This invention relates to a process for purifying crude 1,4-butanediol by melt crystallization and a process for preparing 1,4-butanediol by utilizing the purification process. 1,4-Butanediol is important as a material for synthesizing polyester resins, gamma -butyrolactone, tetrahydrofuran, etc. <IMAGE></p> |
