C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 5/32 (2006.01) B05D 3/06 (2006.01) C08F 2/46 (2006.01) C08J 3/28 (2006.01) C09D 4/06 (2006.01) C09D 11/10 (2006.01)
Patent
CA 2090288
Improved radiation curable compositions are provided which comprises N-vinylformamide and an oligomer selected from the group consisting of epoxy-acrylate resins, polyester acrylate resins, polyurethane acrylate resins and mixtures thereof. A photoinitiator is also added to the composition. A process is also provided whereby the composition is applied to the surface of a substrate and subsequently exposed to a radiation source until an adherent dry polymerized film is formed on the substrate. These compositions are useful as pigmented and unpigmented coatings, printing inks, adhesives and the like.
On présente des compositions photoréticulables améliorées, renfermant du N-vinylformamide et un oligomère choisi dans le groupe constitué de résines d'époxyacrylate, de résines de polyester acrylate, de résines de polyuréthane acrylate, et de leurs mélanges. On ajoute aussi à la composition un photo-initiateur. De plus, on présente une méthode où la composition est appliquée à la surface d'un substrat, puis exposée à une source de rayonnement jusqu'à formation d'une pellicule polymérisée sèche adhérente sur le substrat. Ces compositions sont utiles comme revêtements pigmentés ou non pigmentés, encres d'impression, adhésifs, etc.
Cornforth David Arthur
Fowler Dawn
Renz Walter Louis
Mcfadden Fincham
University Of Pittsburgh
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