Analytical element for analysis of an analyte
AssigneeFuji Photo Film Co., Ltd.
InventorsFuminori Arai, Takushi Miyazako, Harumi Katsuyama
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Abstract
An analytical element for quantitative analysis of analyte contained in a body fluid or the like, which has at least one reagent layer comprising a reactive reagent and a binder, characterized in that a portion or whole of the binder is a polycarboxylic acid carrying a nonionic surface active agent attached through ester linkage to at least a portion of the carboxyl groups contained therein.
Claims8
An analytical element having at least one reagent layer comprising a color-forming reagent which forms a color in the presence of an analyte and a hydrophilic binder wherein
- a portion or all of the binder is a polymer or copolymer containing a repeating unit represented by the formula ##STR3## wherein at least a portion of the carboxyl groups in the repeating unit represented by formula (I), have a nonionic group containing a repeating unit represented by formula (II) attached to the carboxyl group through an ester linkage:
- --CH.sub.2 CH.sub.2 O-- (II).
A multilayer analytical element for analysis of amylase comprising a diazonium color-forming layer containing a diazonium compound and a binder, and a coupler substrate layer provided on the diazonium color-forming layer, in which at least a portion or all of said binder is a polymer containing a repeating unit represented by formula (I) ##STR4## wherein at least a portion of the carboxyl groups in the repeating unit represented by formula (I), have a nonionic group containing a repeating unit represented by formula (II) attached to the carboxyl group through an ester linkage:
- --CH.sub.2 CH.sub.2 O-- (II).
Dependencies are inferred from the claim text.