HIGH-HARDNESS COATED METAL PLATE SUPERIOR IN WEATHERABILITY AND CORROSION RESISTANCE AND PRODUCTION THEREOF

Title:

HIGH-HARDNESS COATED METAL PLATE SUPERIOR IN WEATHERABILITY AND CORROSION RESISTANCE AND PRODUCTION THEREOF

Document Type and Number:

Japanese Patent JP3208520

Kind Code:

B2

Abstract:

PURPOSE: To obtain a coated metal plate which is superior in corrosion resistance and weatherability and has a high hardness and a high resistance to stains by a method wherein a specific acrylic poly(meth)acrylate coating film is provided with a specific thickness on a lowermost layer of a metal plate, thereon one or more coating film layers of a specific composition are provided with a specific thickness, and a top layer is irradiated with an electron beam to be cured with a specific ion transmission resistance.
CONSTITUTION: An acrylic poly(meth)acrylate coating film having a glass transition point of 100°C or lower and thermally cured to be solid or nearly solid is provided with a thickness of 20μm or more on a lowermost layer of a metal plate. Thereon one or more coating film layers of a composition, containing an acrylic poly(meth) acrylate and a multivalent alcohol (meth)acrylate containing 2 or more (meth)acryloyl groups in one molecule and having an equivalent weight of (meth)acryloyl groups of 150 or less as essential components, are provided with a thickness of 1μm or more. A top layer is irradiated with an electron beam to be cured with an ion transmission resistance of 500 M ohms.cm2 or more.

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Inventors:

Nagaharu Ueno
Hiroshi Kanai
Hiroshi Kihira
Hiroshi Tadokoro
Katsuya Kusakari
Toshihiro Kano
Mukaiyama Tomoaki

Application Number:

JP19458294A

Publication Date:

September 17, 2001

Filing Date:

July 28, 1994

Export Citation:

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Assignee:

Nippon Steel Corporation
Dainippon Elio Co., Ltd.
The Ink Tech Co., Ltd.

International Classes:

B05D3/06; B05D5/00; B05D7/14; B05D7/24; B32B15/08; B32B15/082; (IPC1-7): B32B15/08; B05D3/06; B05D5/00; B05D7/14; B05D7/24

Domestic Patent References:

JP6232044A
JP1229622A
JP522847A
JP647341A
JP647340A
JP2242863A
JP62110782A

Attorney, Agent or Firm:

Masamitsu Akizawa (1 person outside)

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