Process for preparation of stable aqueous solutions of zirconium

Details Process for preparation of stable aqueous solutions of zirconium Process for preparation of stable aqueous solutions of zirconium

1994-11-16

1995-11-14

Nazario-Gonzalez, Porfirio

Organic compounds -- part of the class 532-570 series

Organic compounds

Heavy metal containing

C07F 700

Patent

active

054668468

ABSTRACT:
Aqueous solutions of zirconium chelates are prepared by combining an alpha-hydroxycarboxylic acid salt with a solution of a zirconium compound. That preparation first involves formulating an alpha-hydroxycarboxylic acid salt through a stoichiometric reaction between an alpha-hydroxycarboxylic acids and a base. The stoichiometric reaction product consists of an approximately neutral solution of a corresponding alpha-hydroxycarboxylic acid salt. The alpha-hydroxycarboxylic acid salt is then added to a solution of a zirconium compound to produce a mildly acidic or basic solution of the corresponding zirconium alpha-hydroxycarboxylic chelate. Alternatively, the alpha-hydroxycarboxylic acid salt may be pre-prepared and added in solid or liquid form to the zirconium compound before the zirconium compound is placed in solution so that the corresponding zirconium alpha-hydroxycarboxylic chelate is produced.

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patent: 4958038 (1990-09-01), Smeltz
patent: 5076847 (1991-12-01), Kay et al.
patent: 5182408 (1993-01-01), Sharlf

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