Title:
PRODUCTION OF ZINC ETHYLENEDIAMINEPHOSPHATE
Document Type and Number:
Japanese Patent JPH11246585
Kind Code:
A
Abstract:
To provide a method for economically producing zinc ethylenediaminephosphate without requiring waste liquid treatment.
This method for producing zinc ethylenediaminephosphate comprises mixing an aqueous solution of zinc phosphate in which phosphoric acid/zinc (molar ratio) is 1.0 to 2.0 with an aqueous solution of ethylenediamine in such amount that ethylenediamine/zinc (molar ratio) is 0.5-1.0, adjusting pH of solution to 3-11 and aging the solution.
Inventors:
KUMA KIMITAKA
KOYAMA KENJI
KOYAMA KENJI
Application Number:
JP34708598A
Publication Date:
September 14, 1999
Filing Date:
December 07, 1998
Export Citation:
Assignee:
TOSOH CORP
International Classes:
C09K21/12; C07F3/06; C07F9/09; C07F19/00; C08K5/17; (IPC1-7): C07F19/00; C07F3/06; C07F9/09