Method for finish coating on polyurethane formed articles

Coating processes – Applying superposed diverse coating or coating a coated base – Synthetic resin coating

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427299, 427322, 427307, 4273935, B05D 302

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active

047073810

ABSTRACT:
A method for finish coating on polyurethane formed articles, which comprises formulating a finish coating composition so as to have a content of pyrrolidone or its derivative represented by the general formula ##STR1## in which R stands for hydrogen or an alkyl group having at the most 4 carbon atoms, in an amount of 5-40% by weight upon the coating, applying this finish coating composition on the polyurethane formed article directly and heating the so called polyurethane formed article at a temperature of at least 50.degree. C. but lower than the thermal deformation temperature of the polyurethane formed article, said method being capable of attaining a coating layer exhibiting both the properties for a primer coat, namely, a better adhesion onto polyurethane formed articles, and for a finish coat, namely, better weather resistance, higher chemical resistance, favorable appearance and so on, with only a single application and permitting thus to dispense with the primer coating and the heat drying procedure therefor.

REFERENCES:
patent: 3497468 (1970-02-01), Ulmer
patent: 3639147 (1972-02-01), Benefiel et al.
patent: 3893727 (1975-07-01), Desilets
patent: 3962369 (1976-06-01), Chang et al.
patent: 4152313 (1979-05-01), Fogle et al.
patent: 4250073 (1981-02-01), Tamura et al.
patent: 4315053 (1982-02-01), Poth et al.
patent: 4529632 (1985-07-01), Fujii et al.
Mar. 1983 Desmolac 4125 RR 2566/1 Brochure.

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