| abstract |
abstract “processes for producing 1,4-butanediol and a polyester” a process produces 1,4-butanediol by purifying 1,4-butanediol derived from a fermentation broth, whereby 1,4-butanediol exhibiting suitable properties as a production material a polyester is obtained, said 1,4-butanediol allowing to reduce the under-production of tetrahydrofuran during the esterification reaction and to reduce the delay in polymerization. 1,4-butanediol production process includes adding an alkaline substance other than ammonia or an amine to an aqueous solution containing 1,4-butanediol derived from a fermentation broth; distilling the resulting mixture; and coating a solution containing 1,4-butanediol from the steam stream. |