One-pack type thermosetting polyurethane coating composition

Details One-pack type thermosetting polyurethane coating composition One-pack type thermosetting polyurethane coating composition

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.

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