公开(公告)号：EP1236706A4

公开(公告)日：2005-02-16

申请号：EP00970026

申请日：2000-10-24

Applicant: TOSOH F TECH INC

Inventor： NUKUI KAZUNORI ,  ABE HIROYUKI ,  NISHIDA TAKUJI ,  ARAI SHOJI

IPC: C01D3/04 ,  C05D1/02 ,  C07C27/00 ,  C07C29/09 ,  C07C29/124 ,  C07C31/38 ,  C07C67/10 ,  C07C29/58 ,  C07C69/62

CPC classification number: C07C29/095 ,  C05D1/02 ,  C07C67/10 ,  C07C69/63 ,  C07C31/38

Abstract: By making use of potassium chloride by-product that is produced in large amounts in a production process of 2,2,2-trifluoroethanol and its esters, potassium chloride suitable for use as a fertilizer is produced. Accordingly, the present invention makes it possible not only to effectively make use of the potassium chloride by-product, but also to reduce the cost in processing the waste products and prevent environmental pollution. The present invention provides a potassium chloride by-product for use as a fertilizer, the potassium chloride by-product produced in a process in which 1,1,1-trifluoro-2-chloroethane is reacted with a potassium salt of an organic carboxylic acid in the presence of polar aprotic solvent to form 2,2,2-trifluoroethanol and/or 2,2,2-trifluoroethyl ester of organic carboxylic acid, the potassium chloride by-product being characterized in that it contains organic materials in an amount of 3wt% or less.