B - Operations – Transporting – 05 – D
Patent
B - Operations, Transporting
05
D
117/147, 117/195
B05D 7/14 (2006.01) B05D 5/00 (2006.01) B05D 7/16 (2006.01) B32B 15/02 (2006.01) B32B 15/18 (2006.01) C08G 18/65 (2006.01) C08G 18/69 (2006.01) C09D 175/14 (2006.01) C23C 28/00 (2006.01)
Patent
CA 1287277
STEEL ARTICLE HAVING HEAVY-DUTY ANTICORROSIVE COATING ABSTRACT OF THE DISCLOSURE A heavy-duty anticorrosive coating is formed on a steel article by subjecting all or a part of the surface of a steel article to a pretreatment and then forming a polyurethane coating thereon. The coating is formed by reacting a mixture comprising as the main components, (a) a polyol having the main chain composed solely of carbon atoms and hydrogen atoms and containing at least two hydroxyl groups in the molecule and (b) an organic polyisocyanate compound, and an optional organic compound capable of reacting with the polysocyanate compound (b). Preferably, the polyurethane-forming mixture is composed of (a) the polyol, (b) the polyisocyanate compound, (c) an optional polyol, other than the polyol (a), having a hydroxyl value not larger than 120 mg KOH/g, (d) an optional compound having at least two hydroxyl groups and/or amino groups in the molecule and having a hydroxyl value or amine value larger than 120 mg/KOH/g, and optional catalyst, extender, plasticizer and/or hygroscopic compound.
490158
Ishida Masami
Ohtsuki Fuyuhiko
Shindou Yoshio
Suzuki Kazuyuki
Takamatsu Teruo
Goudreau Gage Dubuc
Nippon Steel Corporation
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