Uv-curable superabsorbent coatings

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

C09D 151/00 (2006.01) C08F 265/06 (2006.01) C08F 290/06 (2006.01) C09D 4/00 (2006.01) C09D 4/06 (2006.01) C09D 133/00 (2006.01)

Patent

CA 2380131

Articles coated with a water-resistant coating that absorbs water to provide the water-resistant effect, and desorbs water when the coating is dried, and a method of providing water resistance and corrosion resistance to articles prepared with such coatings. The coating is formed by applying a composition comprising a non- aqueous solution of a water-swellable polymer and a liquid UV-curable resin onto the surfaces of the article, and curing to form a coating comprising the superabsorbent polymer by exposing to an ultraviolet (UV) light source.

Cette invention, qui a trait à des articles revêtus d'un enduit résistant à l'eau, absorbant l'eau pour produire cet effet de résistance à l'eau et désorbant l'eau en séchant, concerne également un procédé permettant de conférer cette résistance à l'eau et à la corrosion à des articles revêtus de ces enduits. On produit ces enduits en appliquant une composition contenant une solution non aqueuse d'un polymère se gonflant à l'eau et d'une résine liquide durcissable aux ultraviolets sur les faces de l'article et en laissant durcir par exposition à une source de lumière ultraviolette cette composition de manière à former un enduit contenant le polymère super-absorbant.

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