Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Patent
1991-02-19
1992-05-05
Wyszomerski, George
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
428626, 428632, 428659, 428684, B32B 1504
Patent
active
051106892
ABSTRACT:
A first characteristic of the invention is present in forming a chromate film on the surface of a zinc or a zinc alloy plated steel sheet, and a resin composition film at a coating amount of 0.3 to 5.0 g/m.sup.2 on said chromate fim, said resin composition film comprising an organic solvent soluble epoxy resin and hydrophobic silica in a ratio of 80:20 to 50:50 by weight of epoxy resin:hydrophobic resin, said epoxy resin having a glass transition temperature of 293.degree. to 342.degree. K.
A second characteristic of the invention is present in forming a chromate film on the surface of a zinc or zinc alloy plated steel sheet, and a resin composition film at a coating amount of 0.3 to 5.0 g/m.sup.2 on said chromate film, and resin composition film comprising an organic solvent soluble epoxy resin having glass transition temperature of 293.degree. to 342.degree. K. and hydrophobic silica and sparingly water soluble Cr compound in a ratio of 80:20 to 50:50 by weight of epoxy resin:(hydrophobic silica+sparingly water soluble Cr compound), and in a ratio 37:3 to 20:20 by weight of hydrophobic silica:sparingly water soluble Cr compound.
REFERENCES:
patent: 4970126 (1990-11-01), Adaniya et al.
patent: 5061575 (1991-10-01), Mohri et al.
Kubota Takahiro
Miyosawa Yoshiaki
Nishimoto Tadashi
Watanabe Tsutomu
Yamashita Masaaki
Kansai Paint Co. Ltd.
NKK Corporation
Wyszomerski George
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