Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Patent
1996-12-26
1998-08-18
Simmons, David A.
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
428622, 428630, 428632, 428633, 428659, 428658, 428666, 428684, B32B 1504, B32B 1518, B32B 2706, B32B 2738
Patent
active
057956600
ABSTRACT:
An organic composite coated steel sheet having an excellent corrosion resistance in a rust-contaminated environment. The sheet contains a chromate film on a zinc or zinc alloy plated sheet and an organic resin film on the chromate film. The resin film has a thickness of 0.2-2.0 microns. The resin film contains (a) a base resin obtained by adding at least one basic nitrogen atom and at least two primary hydroxyl groups to the ends of molecules of an epoxy resin, (b) a polyfunctional polyisocyanate compound having at least six isocyanate groups per molecule, and (c) a rust-preventing additive of a sparingly soluble chromate or a mixture of silica and a sparingly soluble chromate.
REFERENCES:
patent: 4889775 (1989-12-01), Adaniya et al.
The Iron and Steel Institute of Japan; "Current Advances in Materials and Processes", CAMP-ISIJ vol. 5, Publ. 1992; 3 pages.
Centre de Recherches Metallurgiques (CRM); "2nd International Conference on Zinc and Zinc Alloy Coated Steel Sheet/Galvatech '92" Publ. 1992. pp. 372-376 The Corrosion Resistance of Organic Composite-Coated Steel Sheets; 13 pages, Sep. 1992.
Encyclopedia of Polymer Science and Engineering, vol. 4, pp. 355-356, 1986.
Haruta Yasuhiko
Ishiyama Takashi
Kubota Takahiro
Yamashita Masaaki
Yoshimi Naoto
Gray Linda L.
Kansai Paint Co. Ltd.
NKK Corporation
Simmons David A.
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