B - Operations – Transporting – 05 – D
Patent
B - Operations, Transporting
05
D
B05D 1/36 (2006.01) B05D 7/24 (2006.01) C08F 8/30 (2006.01) C09D 133/06 (2006.01) C09D 201/02 (2006.01) C09D 201/06 (2006.01) C08L 61/20 (2006.01)
Patent
CA 2145848
A color-plus-clear coating system is disclosed. A pigmented or colored basecoat is first applied to a substrate followed by the application of a transparent topcoat to the basecoat. The transparent topcoat composition is a crosslinkable composition comprising (1) a material containing a plurality of carbamate and/or urea functional groups and (2) an aminoplast crosslinking agent. The topcoat composition provides a composite coating with improved acid etch resistance, making the composite coating particularly useful as an automotive topcoat.
L'invention se rapporte à un système de revêtement à couches colorée et transparente. On applique d'abord une couche de base pigmentée ou colorée sur un substrat, puis on applique ensuite une couche supérieure transparente sur la couche de base. La composition de la couche supérieure transparente est une composition réticulable comprenant (1) un matériau contenant une pluralité de groupes fonctionnels de carbamate et/ou d'urée et (2) un agent de réticulation à base d'aminoplaste. La composition de la couche supérieure produit un revêtement composite dont la résistance à l'attaque de l'acide est améliorée, ce qui permet notamment de l'utiliser comme couche supérieure d'un revêtement pour automobile.
Mayo Michael A.
Singer Debra L.
Swarup Shanti
Borden Ladner Gervais Llp
Ppg Industries Inc.
Ppg Industries Ohio Inc.
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