Pigmented coatings for ceramic substrates

Details Pigmented coatings for ceramic substrates Pigmented coatings for ceramic substrates

C - Chemistry, Metallurgy

09

D

C09D 175/00 (2006.01) B41M 1/34 (2006.01) C08G 18/80 (2006.01)

Patent

CA 2380086

A crosslinking composition, especially useful as a component of a composition useful for coating ceramic substrates, comprises (a) amino-functional curing agent; (b) blocked polyisocyanate; and, optionally, (c) organo-functional siloxane comprising a member selected from the group consisting of epoxy- functional siloxane, amino-functional siloxane, (blocked isocyanato)- functional siloxane, and a mixture of two or more thereof. The composition useful for coating ceramic substrates comprises (a) reactive organic resin which is polyhydroxy-functional, polyepoxy-functional, or epoxy-functional and hydroxy-functional; (b) color-imparting pigment; (c) reactive wax; and (d) the above crosslinking composition. The coating composition may be applied to ceramic substrates and cured. The preferred ceramic substrates are glass bottles.

L'invention concerne une composition de réticulation, particulièrement utile comme constituant d'une composition utilisée pour le revêtement de substrats céramiques. La composition comprend: a) un agent de durcissment amino fonctionnel; b) un polyisocyanate inhibé; et, éventuellement, c) un siloxane organo-fonctionnel comprenant un élément sélectionné dans le groupe constitué par un siloxane époxy fonctionnel, un siloxane amino fonctionnel, un siloxane (isocyanate inhibé) fonctionnel, et un mélange de deux ou de plusieurs desdits éléments. Cette composition utile pour le revêtement de substrats céramiques comprend: a) une résine organique réactive qui est polyhydroxy-fonctionnel, polyépoxy-fonctionnel, ou époxy-fonctionnel et hydroxy-fonctionnel; b) un pigment colorant; c) de la cire réactive; et d) ladite composition de réticulation. La composition de revêtement de l'invention peut être appliquée sur des substrats céramiques, puis durcie. Les bouteilles de verre constituent des substrats céramiques préférés.

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