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:
Nov. 07, 2000
Filed:
Jan. 26, 1998
Hitoshi Morinaga, Fukuoka, JP;
Mitsubishi Chemical Corporation, Tokyo, JP;
Abstract
A surface treatment composition containing a complexing agent as a metal deposition preventive in a liquid medium, in which the complexing agent is an ethylenediaminephenol derivative of the following general formula (1) or its salt: ##STR1## wherein X.sub.1 and X.sub.2 are hydroxyl groups; Y.sub.1 to Y.sub.8 are respectively independently a hydrogen atom, a hydroxyl group, a halogen atom, a carboxyl group, a phosphonic acid group, a sulfonic acid group, a carbonyl group, a nitro group, a nitroso group, an amino group, an imino group, a nitrilo group, a nitrile group, a thiocyanate group, a hydroxyamino group, a hydroxyimino group, or an alkyl or alkoxy group which may have a substituent, provided that at least one of Y.sub.1 to Y.sub.8 is not a hydrogen atom; Z.sub.1 to Z.sub.4 are respectively independently a hydrogen atom, a carboxyl group or a sulfonic acid group; and R.sub.1 to R.sub.4 are respectively independently a hydrogen atom or an alkyl group which may have a substituent.