Environmentally friendly ink and fountain solution for wet offset printing process and wet offset printing process
AssigneeSicpa Holding SA
InventorCecile Leprince
Life of this patent
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Abstract
The present invention relates to the field of environmentally oxidative drying inks for wet offset printing processes using environmentally friendly fountain solutions or environmentally friendly fountain concentrates. In particular, the invention related to a kit comprising an environmentally friendly fountain solution or environmentally friendly fountain concentrate and an environmentally friendly oxidative drying ink for wet offset printing processes, wherein said oxidative drying ink comprises at least one oxidative drying varnish and one or more neutral manganese complex compounds and wherein said fountain solution or fountain solution concentrate comprises one or more manganese (II) salts of a C1-C3 carboxylic acid.
Claims18
A kit for wet offset printing a security feature on a substrate, said kit comprising:
- a) an oxidative drying ink comprising at least one oxidative drying varnish and one or more neutral manganese complex compounds having the formula (I)
- wherein
- R1 are identical or different from each other and selected from the group consisting of C1-C18-alkyls, C1-C18-alkenyls, C1-C18-alkynyls and C3-C12-cycloalkyls;
- n is an integer in a range between 1 and 5;
- X, Y and Z are identical or different from each other and selected from R2COO−;
- R2 are identical or different from each other and selected from the group consisting of H, C1-C18-alkyls, C1-C18-alkenyls, C1-C18-alkynyls, C3-C12-cycloalkyls, C3-C12-cycloalkenyls, C1-C12-heterocycloalkyls and C7-C12-aralkyls;
- and
- b) a fountain solution comprising one or more manganese (II) salts of a C1-C3 carboxylic acid.
A process for printing a security feature on a substrate by a wet offset printing process comprising the steps of:
- a) wetting a printing plate with a fountain solution comprising one or more manganese (II) salts of a C1-C3 carboxylic acid,
- b) inking the printing plate with an oxidative drying ink, and
- c) transferring the oxidative drying ink from the printing plate in an offset printing machine to a substrate so as to print a security feature on the substrate,
- wherein the oxidative drying ink comprises at least one oxidative drying varnish and one or more neutral manganese complex compounds having the formula (I)
- wherein
- R1 are identical or different from each other and selected from the group consisting of C1-C18-alkyls, C1-C18-alkenyls, C1-C18-alkynyls and C3-C12-cycloalkyls;
- n is an integer in a range between 1 and 5;
- X, Y and Z are identical or different from each other and are selected from R2COO−;
- R2 are identical or different from each other and selected from the group consisting of H, C1-C18-alkyls, C1-C18-alkenyls, C1-C18-alkynyls, C3-C12-cycloalkyls, C3-C12-cycloalkenyls, C1-C12-heterocycloalkyls and C7-C12-aralkyls;
- and
- and wherein the fountain solution comprises one or more manganese (II) salts of a C1-C3 carboxylic acid.
Dependencies are inferred from the claim text.