Marking liquid
AssigneeSchwan-Stabilo Schwanhausser GmbH & Co.
InventorsHanns Dieter Denninger, Thomas Spengler, Ivan Horvat, Klaus Dieter Schröder
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Abstract
A marking liquid which contains a polymer dispersion with particles which are colored with marking agent, optionally further dyes and marking agents, one or more salts of a polyvalent, in particular bi- or trivalent cation, water and optionally moisture retaining agents and further usual additives, wherein the polymer forming the polymer particles is selected from the group of polyesters, polyester amides, polymers and copolymers based on acrylate or methacrylate with a proportion of free carboxylic acid groups of less than 10% by weight, melamine-formaldehyde-sulfonamide resins and mixtures thereof.
Claims17
A marking liquid comprising a salt solution and a polymer dispersion with particles which are colored with a marking agent, optionally further dyes and marking agents, water and optionally moisture retaining agents and additives, wherein the salt in the salt solution comprises at least one salt of a polyvalent cation and an anion of an acetate, wherein the total amount of the at least one salt of the polyvalent cation is present in a range up to the saturation limit of the solution and wherein the polymer forming the polymer particles is selected from polymers and copolymers based on acrylate.
The marking liquid as set forth in 1 wherein the cation is aluminum or iron (III).
Dependencies are inferred from the claim text.