Patent ID: 6096388
Filing Date: 2000-08-01
Classification: C04B,C08F,C09D

Abstract:
A method of coating a substrate selected from the group consisting of fibrocement and fiber cement, said method comprising at least the steps of:(I) at least applying to the surface of the substrate a mono or poly isocyanate catalyzed radiation curable acrylate composition which is also self curing by means of(i) serial application of(a) a liquid carried solvent free mono or poly isocyanate catalyst, and(b) the radiation curable acrylate composition, or(ii) an application of a mixture of a solvent free mono or poly isocyanate catalyst and the acrylate composition;the application by (I)(i) or (ii) providing a composition having from about 2.5 to about 30% v/v of the catalyst,(II) photo curing at least the surface of the coating applied as (I) prior to any self curing(III) applying to the surface resulting from (II)(i) a radiation curable composition, and/or(ii) serially(a) a liquid carried solvent free mono or poly isocyanate catalyst, and(b) a radiation curable acrylate composition, and/or(iii) a mixture of a solvent free mono or poly isocyanate catalyst and the acrylate composition; and(IV) curing at least the surface of the coating(s) applied as (III).