Title:
ACIDIC CLEANING AGENT FOR ALUMINUM-BASED METAL MATERIALS, AND METHOD FOR CLEANING ALUMINUM-BASED METAL MATERIAL
Document Type and Number:
WIPO Patent Application WO/2021/132154
Kind Code:
A1
Abstract:
Provided are: a coating composition which makes it possible to form a lower-gloss high-strength matte coating film; and a coating film produced from the coating composition. An acidic cleaning agent containing a phosphoric acid ion, a sulfuric acid ion and a ferric ion, wherein the phosphoric acid ion is a main component and the ratio of the concentration of the phosphoric acid ion to the concentration of the ferric ion falls within a specified range. More specifically, the concentration of the phosphoric acid ion is 15 to 26 g/L, the concentration of the phosphoric acid ion is adjusted to a value larger than the concentration of the sulfuric acid ion, and the ratio of the concentration of the phosphoric acid ion to the concentration of the ferric ion is 35:1 to 180:1.
More Like This:
| JPH06293983 | WASHING DEVICE |
| WO/2008/149907 | CLEANING SOLVENT AND CLEANING METHOD |
Inventors:
SATO ARATA (JP)
KAMIMURA MASAYUKI (JP)
KAMIMURA MASAYUKI (JP)
Application Number:
PCT/JP2020/047674
Publication Date:
July 01, 2021
Filing Date:
December 21, 2020
Export Citation:
Assignee:
NIPPON PAINT SURF CHEMICALS CO LTD (JP)
International Classes:
B08B3/08; C11D7/08; C11D7/10; C11D7/16; C11D7/34; C23G1/12
Foreign References:
| JPH0273983A | 1990-03-13 | |||
| JP2007197775A | 2007-08-09 |
Attorney, Agent or Firm:
SHOBAYASHI Masayuki et al. (JP)
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