Coating layer having self-restoring properties for glazing,...

C - Chemistry – Metallurgy – 08 – G

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C08G 18/78 (2006.01) B32B 17/00 (2006.01) B32B 17/10 (2006.01) C08G 18/42 (2006.01) C08G 18/79 (2006.01)

Patent

CA 1263492

ABREGE DESCRIPTIF L'invention concerne une couche de revêtement en polyuréthane ayant des propriétés d'autocicatrisation pour des vitrages en verre et/ou en matière plastique, notamment ceux exposés aux agents atmosphériques. La couche de revêtement selon l'invention est formée à partir d'un mélange réactionnel d'un composant iso- cyanate trifonctionnel tels les biurets ou isocyanurates du 1,6-hexaméthylènediisocyanate ayant une teneur en radicaux NCO de 15 à 25% en poids environ et d'un compo- sant polyol choisi parmi les polyesterpolyols pluri- fonctionnels ayant une teneur en radicaux OH de 3 à 12% en poids environ.

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