Method for curing polyurethane coating

Details Method for curing polyurethane coating Method for curing polyurethane coating

1985-07-25

1986-12-23

Lusignan, Michael R.

Coating processes

With post-treatment of coating or coating material

Chemical agent applied to treat coating

15624424, 1563311, 4273935, 4284246, 4284248, B05D 302, C09J 314, C09J 316

Patent

active

046312064

ABSTRACT:
An uncured polyurethane coating formed by applying polyurethane paint containing isocyanate prepolymer on a substrate is cured by a method which comprises applying a catalyst (cure accelerator) on the uncured polyurethane coating and subsequently exposing the polyurethane coating to a heating atmosphere of 60.degree. to 100.degree. C. By this method, the reaction of urethanation explosively proceeds and the time for curing the coating can be notably cut because the optimum catalyst for the polyurethane coating can be selected without restriction and the catalyst in a highly concentrated state can be brought into contact with the polyurethane coating.

REFERENCES:
patent: 3083118 (1963-03-01), Bridgeford
patent: 3991255 (1976-11-01), Blaskiewicz et al.
patent: 4520042 (1985-05-01), Smith
Kunststoff Hand Buck, vol. 7, Polyurethane, Carl Hanser Verlag, Munchen, (1966), pp. 96-103 and 445-448.

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