One-can heat-curable resin compositions and precoated metal

Details One-can heat-curable resin compositions and precoated metal One-can heat-curable resin compositions and precoated metal

1988-07-13

1989-08-29

Herbert, Thomas J.

Stock material or miscellaneous articles

Composite

Of metal

4284258, 428480, 528 45, B32B 1508, C08G 1881

Patent

active

048616729

ABSTRACT:
A one-can heat-curable resin composition which comprises: (1) a polyester polyol having at least three functional groups; (2) an adduct of an epoxy resin having at least one secondary hydroxyl group with a lactone compound or an alkylene oxide; and (3) a blocked organic polyisocyanate or a product of blocking of a prepolymer having terminal NCO groups obtained by reacting an organic polyisocyanate and an active hydrogen-containing compound, gives a tough and durable coat film showing no yellowing or thermal degradation due to heating at all.
Furthermore, said film has a high hardness and is excellent in processability and staining resistance, particularly in mustard staining resistance. In particular, the composition, when used in the production of precoated metal, gives good coated steel sheets, which can be advantageously used in manufacturing household electric appliances and so on.

REFERENCES:
patent: 4507412 (1985-03-01), Hickner et al.
patent: 4791168 (1988-12-01), Salatin et al.
patent: 4808477 (1989-02-01), Harber

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