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:
Jan. 15, 2008
Filed:
Jun. 11, 2003
Yasutaka Sumida, Neyagawa, JP;
Mitsuhiro Kitajima, Suita, JP;
Yasutaka Sumida, Neyagawa, JP;
Mitsuhiro Kitajima, Suita, JP;
Nippon Shokubai Co., Ltd., Osaka, JP;
Abstract
The present invention is to provide a stabilized aqueous aminopolycarboxylate solution composition and a method of stabilizing the aminopolycarboxylate through preventing the same from caking. An aqueous aminopolycarboxylate solution composition containing an aminopolycarboxylate represented by the following general formula (1): in the formula, X may be the same or different and represents a hydrogen atom, an alkali metal atom, or an ammonium group, which has a D-form/L-form molar ratio of an aspartic acid skeleton of the aminopolycarboxylate of 1/0 to 0.7/0.3 or 0.3/0.7 to 0/1, has a solid concentration of 25 to 60 mass %, and has a pH value of not more than 11.