2000-096049 is referenced by 2 patents.

PROBLEM TO BE SOLVED: To obtain a corrosion inhibitor for acid cleaning of a metal, capable of efficiently inhibiting the corrosion of the metal, hardly causing local corrosion, providing high whiteness after cleaning, when the metal is subjected to the acid cleaning, and useful for an iron and steel-producing process or the like by including a specific polyamine compound.SOLUTION: This corrosion inhibitor comprises a polyamine compound of formulas I or II (R1 and R2 are each H, methyl, ethyl, propyl, hydroxyethyl, benzyl or dodecylbenzyl; X is a halogen or HSO4). Preferably, the cleaning composition is prepared by adding 0.1-50,000 mg polyamine compound of formulas I or II, and the cleaning of the metal is carried out by spraying the obtained cleaning composition on the surface of the metal, or dipping the surface of the metal into the cleaning composition to clean the metal.

Title
Corrosion inhibitor for acid cleaning of metal, cleaning liquid composition containing the same, and cleaning of metal by using the same
Application Number
10-265272
Publication Number
2000-096049
Application Date
September 18, 1998
Publication Date
April 4, 2000
Inventor
Okahara Haruo
Sasaki Hiroshi
Assignee
Asahi Kagaku Kogyo
IPC
C23G 01/06
C23F 11/173
C23F 11/16
C23F 11/14
C23F 11/04
C08L 81/06
C08L 65/00
C09K 15/30