Intaglio printing inks having improved dispersibility and...

C - Chemistry – Metallurgy – 09 – D

Patent

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C09D 11/10 (2006.01)

Patent

CA 2410088

Intaglio printing inks having both improved dispersibility and chemical resistance are provided and, in particular, dispersibility in tap water is provided. The ink comprises an alkyd containing an unsaturated oily component, an anionic or nonionic surfactant and an organic base selected from the group consisting of alcohol-amines, ring-containing nitrogen compounds and substituted polyethyleneimines, wherein the substituted polyethyleneimines are modified with epichlorohydrine or alkoxylated and the organic base has a boiling point higher than 150 ~C. Alternatively, a zwitterionic surfactant may be used in which case an cxorganic base is not separately included. The ink may also comprise water.

La présente invention concerne des encres d'impression en creux présentant une dispersabilité et une résistance chimiques améliorées, et particulièrement, une dispersabilité dans l'eau du robinet. Cette encre renferme un alkyde contenant un composant huileux insaturé, un tensioactif anionique ou non ionique, et une base organique sélectionnée dans le groupe constitué d'amines d'alcool, de composés d'azote à noyaux et de polyéthylèneimines substitués, ces polyéthylèneimines substitués étant modifiés avec de l'épichlorohydrine, ou alcoxylés, la base organique présentant un point d'ébullition supérieur à 150 ·C. Dans une variante, un tensioactif zwittérionique peut être utilisé, dans ce cas une base organique n'est pas ajoutée séparément. Cette encre peut également contenir de l'eau.

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