| 摘要 |
<p>PCT No. PCT/EP96/00023 Sec. 371 Date Jul. 1, 1997 Sec. 102(e) Date Jul. 1, 1997 PCT Filed Jan. 4, 1996 PCT Pub. No. WO96/20909 PCT Pub. Date Jul. 11, 1996Impurities are separated from aqueous solutions of 1,6-hexanediol or 1,6-hexanediol precursors, such as adipic and 6-hydroxycaproic acid, by a process which comprises adding at least one carboxylic acid to a solution (a) of 1,6-hexanediol and subjecting this solution (a) or a solution (b) containing carboxylic acid(s) as precursor(s) of 1,6-hexanediol to a heat treatment at temperatures above room temperature in the absence of hydrogen.</p> |
