Retroreflective article that has phenolic resin in chemical...

G - Physics – 02 – B

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G02B 5/128 (2006.01) G02B 5/124 (2006.01)

Patent

CA 2200062

A retroreflective sheeting (10, 30) comprising a retroreflective constituent (12, 32) that includes optical elements (14, 34) and a reflective layer (16, 36). The reflective layer (16, 36) contains elemental aluminum and is disposed behind the optical elements (14, 34). A phenolic resin is placed in chemical association with the elemental aluminum. The phenolic resin has a total hydroxyl number of at least 90. The placement of the phenolic resin in chemical association with the reflective layer provides the retroreflective sheeting with improved durability, demonstrated by prolonged retroreflective performance.

Revêtement réfléchissant (10, 30) comprenant un constituant réfléchissant (12, 32) incluant des éléments optiques (14, 34) et une couche réfléchissante (16, 36). La couche réfléchissante (16, 36) contient de l'aluminium élémentaire. Elle est placée en arrière des éléments optiques (14, 34). Une résine phénolique est appliquée de manière à subir une association chimique avec l'aluminium élémentaire. Cette résine phénolique présente un nombre hydroxyle total d'au moins 90. L'application de cette résine phénolique en association chimique avec la couche réfléchissante produit un revêtement réfléchissant d'une meilleure longévité, attestée par un effet réfléchissant plus durable.

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