Process for the production of a layer of self-cicatrizing polyur

Details Process for the production of a layer of self-cicatrizing polyur Process for the production of a layer of self-cicatrizing polyur

1990-06-05

1992-02-25

Lusignan, Michael

Fishing, trapping, and vermin destroying

427165, 4273897, 4273935, 428 38, 4284231, 4284256, B05D 506

Patent

active

050912143

ABSTRACT:
A coating layer of a thermohardening polyurethane having self-cicatrization properties is prepared by preparing a reactive mixture of an isocyanate component which is a diisocyanate or a mixture of diisocyanate monomers capable of forming an isocyanate trimer, a polyol monomer having a functionality of at least 2 and a trimerization catalyst; placing the reactive mixture onto a support for formation of said layer; heating the reactive mixture to a temperature sufficient to initiate trimerization; and then further heating the reactive mixture to initiate and conduct polymerization thereby forming said polyurethane layer.

REFERENCES:
patent: 4265798 (1981-05-01), Mishra
patent: 4467014 (1984-08-01), Smith
patent: 4657796 (1987-04-01), Musil et al.

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