Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Patent
1991-10-29
1992-09-15
Wyszomierski, George
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
428626, 428632, 428659, B32B 1504
Patent
active
051477297
ABSTRACT:
The improved corrosion-resistant steel plate with an organic coating comprises a steel plate having a zinc or zinc alloy plate layer which is overlaid with a chromate film which in turn is coated with an organic resin paint film. The organic resin coat comprises an epoxy resin which is prepared by reacting with an isocyanate compound and has a dialkanolamine incorporated into its bisphenol A skeleton, and silica. The dialkanolamine combines with a urethane-modified epoxy resin to provide satisfactory curability at low temperatures; at the same time, it combines with the silica to provide a satisfactory film reinforcing effect. The organic coat formed of this composition can be effectively cured at low temperatures and yet it will neither dissolve nor soften upon swelling under the action of the alkali that is generated during cationic electrodeposition at the interface between the electrodeposited film and the organic coat. Thus, the organic coat has good paint adhesion, high corrosion resistance, as well as good workability and as-worked corrosion resistance and makes the steel plate suitable for us an automotovie part after painting.
REFERENCES:
patent: 4407899 (1983-10-01), Hara et al.
patent: 4775600 (1988-10-01), Adaniya et al.
patent: 4889775 (1989-12-01), Adaniya et al.
patent: 4959277 (1990-09-01), Saeki et al.
Ogishi Hideo
Takao Kenji
Umino Shigeru
Yamato Koji
Kawasaki Steel Corporation
Miller Austin R.
Wyszomierski George
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