Coating processes – With post-treatment of coating or coating material – Heating or drying
Patent
1982-11-29
1984-10-23
Cockeram, Herbert S.
Coating processes
With post-treatment of coating or coating material
Heating or drying
4273855, 4273935, 4273936, 528 67, 528 73, 528 75, B05D 302, C08G 1810, C08G 1828
Patent
active
044788940
ABSTRACT:
Disclosed are a thermosetting polyurethane coating composition of one-pack type which comprises a product obtained by reacting (i) an isocyanate component having at least one oxadiazinetrione ring obtained by the reaction of bis(isocyanatomethyl)cyclohexane with carbon dioxide with (ii) a polyol component having a molecular weight of 400 to 50,000 at such a proportion as satisfying the relations: the number of hydroxyl group > the number of free isocyanate group and the number of oxadiazinetrione ring/(the number of hydroxyl group--the number of free isocyanate group)=0.1 to 10 and a process for producing the coating composition.
The composition has excellent storage stability and the cured coatings have no problems of yellowing and pin-holes and are excellent in mechanical properties, chemical resistance and weather resistance.
REFERENCES:
patent: 3730953 (1973-05-01), Naito et al.
Kamatani Yoshio
Nasu Koji
Tanaka Michio
Cockeram Herbert S.
Takeda Chemical Industries, Inc.
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