C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 5/00 (2006.01) C08K 9/02 (2006.01)
Patent
CA 2691630
A coating composition is substantially free from chromate and comprises a resin, a metal salt, and an interference pigment. The interference pigment includes mica which has a solar reflective coating disposed thereon. A reflective coating system comprises a cured film formed from the coating composition disposed on a substrate. The cured film has a transparency of at least 75%, as measured according to ASTM 1746. In addition, the cured film has a solar reflectivity of at least 55%, as measured according to ASTM E 1918 and ASTM E 903. The cured film has excellent corrosion resistance properties and adhesion to the substrate.
L'invention concerne une composition de revêtement sensiblement exempte de chromate et constituée d'une résine, d'un sel métallique et d'un pigment d'interférence. Le pigment d'interférence contient du mica sur lequel est disposé un revêtement réfléchissant le rayonnement solaire. Un système de revêtement réfléchissant se compose d'un film polymérisé formé à partir de la composition de revêtement disposée sur un substrat. La transparence du film polymérisé, mesurée selon la norme ASTM 1746, est d'au moins 75 %. En outre, la réflectivité solaire du film polymérisé, mesurée selon les normes ASTM E 1918 et E 903, est d'au moins 55 %. Le film polymérisé possède d'excellentes propriétés de résistance à la corrosion et d'adhérence au substrat.
Algrim Donald J.
Slawikowski Mark
Gowling Lafleur Henderson Llp
Ppg Industries Ohio Inc.
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