The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 15, 2000
Filed:
Jul. 16, 1998
Miaki Asakawa, Hyogo, JP;
Yasutaka Sumida, Osaka, JP;
Masatoshi Shimomura, Hyogo, JP;
Shuichi Okuno, Hyogo, JP;
Tadanobu Morimoto, Hyogo, JP;
Masanao Morita, Hyogo, JP;
Hitoshi Suenaga, Hyogo, JP;
Nippon Shokubai Co. Ltd., Osaka-fu, JP;
Teikoku Chemical Industries Co., Ltd., Osaka-fu, JP;
Abstract
A chelating composition containing an aliphatic polycarboxylic acid of the following formula (I): ##STR1## wherein A is an imino group or an oxygen atom, R is a hydrogen atom or a hydroxyl group, and n is 0 or 1, or the salt thereof and sugar or saccharic acid of 4 to 12 carbon atoms at such a ratio as enables the components to manifest synergistic effects is provided. This chelating composition is capable of effectively sequestering a metal ion and preventing the metal ion from being insolubilized without causing pollution of the environment.