Ambient cured coatings and coated rubber products therefrom

Details Ambient cured coatings and coated rubber products therefrom Ambient cured coatings and coated rubber products therefrom

C - Chemistry, Metallurgy

08

J

C08J 7/04 (2006.01) C08L 21/00 (2006.01) C09D 115/00 (2006.01) C09D 201/00 (2006.01) C08K 3/08 (2006.01)

Patent

CA 2492866

The present invention provides an ambient temperature cured coated articles where the coating is rubbery, high elongation, weatherable coating composition as a mixture of two parts, one part containing a solution of a functional film forming polymer, and the other part providing the curing component. The stability as a premixed, one-part solution is limited to up to several months. The curable film former and curing component are mixed together at an overall 4% to 25% solids content. The viscosity is less than 20,000 cps (Brookfield) such that the coating can be sprayed, brushed or dipped to form thin coatings of from 0.001 - 0.020 mils. Coated rubber articles containing metal conductive particles exhibit heat emissive properties useful for extending the service life of the articles.

L'invention concerne des articles revêtus durcis à température ambiante, dont le revêtement est une composition de revêtement en caoutchouc, à allongement élevé et résistant aux intempéries, formée d'un mélange de deux parties, l'une contenant une solution d'un polymère filmogène fonctionnel et l'autre constituant le composant de durcissement. La stabilité en tant que solution à un composant prémélangée peut durer plusieurs mois. Le filmogène durcissable et le composant de durcissement sont mélangés l'un à l'autre selon une teneur en solides globale de 4 à 25 %. La viscosité est inférieure à 20 000 cps (Brookfield), si bien que le revêtement peut être pulvérisé, appliqué par brossage ou trempage en vue de la formation de couches minces de 0,001 à 0,020 mils. Des articles en caoutchouc revêtus contenant des particules conductrices métalliques possèdent des propriétés calorigènes utiles pour augmenter la durée de vie des articles.

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