PROCESS FOR IMPARTING HYDROPHILIC PROPERTY TO ALUMINUM SURFACE

Title:

PROCESS FOR IMPARTING HYDROPHILIC PROPERTY TO ALUMINUM SURFACE

Document Type and Number:

Japanese Patent JPS6422383

Kind Code:

A

Abstract:

PURPOSE: To improve hydrophilic property of hydrophilic silicate film formed on the surface of Al and adhesive strength of the film to the Al, and to improve post workability of the coated product by treating the silicate film with a soln. contg. at least one kind of polyvalent metal salt or hydroxide.

CONSTITUTION: After applying a soln. for hydrophilic treatment contg. alkali metal silicate and/or quaternary amine silicate to Al surface after or without subjecting the surface to chemical conversion treatment, a hydrophilic silicate film is formed on the Al surface by heating and drying the coated product. Then, obtd. hydrophilic silicate film is treated with a soln. contg. at least one kind of polyvalent metal salt or hydroxide to impart hydrophilic property to the Al surface. The drying of the coated product by heating is preferred to be carried out by hot air drying at 80W300°C for 5secW30min.

Inventors:

SAKO RYOSUKE
OGINO RIKUO
NISHIHARA AKIRA
OKITA HIROSHI
MATSUSHIMA YASUNOBU

Application Number:

JP17902887A

Publication Date:

January 25, 1989

Filing Date:

July 20, 1987

Export Citation:

Click for automatic bibliography generation Help

Assignee:

NIHON PARKERIZING

International Classes:

B05D7/14; B05D3/02; B05D3/10; B05D5/00; B05D7/24; F28F1/32; F28F19/02; (IPC1-7): B05D7/14; B05D7/24; F28F1/32; F28F19/02

Domestic Patent References:

JPS5457264A

1979-05-08

Attorney, Agent or Firm:

Asamura Akira

Previous Patent: 放送受信装置および出力制御方法

Next Patent: PROCESS FOR IMPARTING HYDROPHILIC PROPERTY TO ALUMINUM SURFACE