DOI QR코드

DOI QR Code

Solbitol로부터 무적제 제조용 고순도 1,4-솔비탄의 합성

류화열;문부현;주창식
Yu, Hwa-Yeal;Moon, Bu-Hyun;Ju, Chang-Sik

  • 발행 : 2008.03.31

초록

In order to develope an efficient way for the synthesis of highly pure 1,4-sorbitan solution from sorbitol, some experimental studies were performed. The reaction showed first order reaction with activation energy of 118.3 KJ/mol. Color of the product solutions changed to brown with reaction temperature and reaction time. The equilibrium contents of 1,4-sorbitan increased with decrease in reaction pressure, but the content of major impurity, sorbide, showed maximum about 550 torr vacuum with $H_3PO_4$ catalyst. The reasonable catalyst configuration was 0.26 wt% PTSA and 1 wt% $H_3PO_2$ and optimum reaction temperature and pressure range was $110\sim120^{\circ}C$ and $700\sim720$ torr vacuum, respectively. At optimum reaction conditions, we could obtain white product solutions of highly pure 1,4-sorbitan with sorbide less than 10 wt%. This white product solution is advantageous for preparation of high quality span, anti-fogging agent.

키워드

1,4-Sorbitan;Anti-fogging agent;Sorbitol;Span

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