Resin-coated steel for fuel tanks of automobile and method for manufacturing the same
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United States of America Patent
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Sep 28, 2004
Grant Date -
Jan 30, 2003
app pub date -
Aug 27, 2001
filing date -
Dec 28, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to a resin-coated steel sheet for fuel tanks of an automobile and a resin solution used for the same. The resin solution of the present invention comprises (a) a main solution of water soluble phenoxy resin having a number average molecular weight of 25,000 to 50,000; (b) 2 to 15 phr of melamine resin on the basis of the main solution; (c) 10 to 20 phr of colloidal silica on the basis of the main solution, (d) 2 to 10 phr of teflon resin on the basis of the main solution, and (e) 5 to 70 phr of metallic powder being selected at least one material from the group consisting of Al, Zn, Mn, Co, Ni, Sn and SnO. The resin solution is coated on a cold rolled steel sheet plated with zinc or zinc alloy over which a chromate layer films, and then baked at a local temperature of 160 to 250.degree. C. to prepare a resin-coated steel sheet for fuel tanks of an automobile.
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