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Title:
AQUEOUS ANTICORROSIVE COMPOSITION, ANTICORROSIVELY TREATED STEEL AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JPH11172189
Kind Code:
A
Abstract:

To obtain an aqueous anticorrosive composition exhibiting sufficient anticorrosivity, even when coated on steel or the like and subsequently stored under a severe environment having a high temperature and a high humidity, to produce an anticorrosively treated steel coated with the anticorrosive composition, and to provide a method for producing the treated steel.

This aqueous anticorrosive composition comprises 100 pts.wt. of an aqueous resin composition, 1-30 pts.wt. of a water-soluble solvent, and an aqueous chromium compound in an amount of 0.01-2.0 pts.wt. as chromium ions, and has a pH of ≥7. The aqueous resin composition comprises 20-100 pts.wt. of a styrene-butadiene copolymer having a glass transition point of 30-80°C and 0-80 pts.wt. of an ethylene-acrylic acid copolymer. The anticorrosively treated steel is obtained by forming the coating film of the aqueous anticorrosive composition on the surface of zinc-plated steel or zinc- aluminum alloy-plated steel. The method for producing the anticorrosive steel comprises coating the anticorrosive composition on the surface of the zinc-plated steel or zinc-aluminum alloy-plated steel and subsequently drying the coated steel.


Inventors:
KOSHIISHI KENJI
FUJIWARA TOSHIAKI
USUKI KAZUHIKO
Application Number:
JP36180797A
Publication Date:
June 29, 1999
Filing Date:
December 10, 1997
Export Citation:
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Assignee:
NISSHIN STEEL CO LTD
NIPPON PAINT CO LTD
International Classes:
B05D7/14; C09D5/00; C09D5/08; C09D7/12; C09D109/06; C09D123/08; C09D133/02; C23F11/00; (IPC1-7): C09D109/06; B05D7/14; C09D5/00; C09D5/08; C09D7/12; C09D123/08; C09D133/02; C23F11/00
Attorney, Agent or Firm:
Shindo Mitsuru