Abstract:
The invention provides a method of manufacturing an electronic device wherein a solder mask is prepared with a radiation curable solder mask inkjet ink containing at least one cationic polymerizable compound and a photoinitiating system, wherein the photoinitiating system includes a specified sulphonium compound and a Thioxanthone.
Abstract:
A security document having in order a) a first laser markable layer, present as a self-supporting layer or as a layer on a support; b) at least one polymeric overlay; and c) a second laser markable layer; wherein the second laser markable layer exhibits a higher laser sensitivity than a non-laser marked area of the first laser markable layer but produces a smaller maximum optical density or a smaller gloss on laser marking. Methods for manufacturing the security document are also disclosed.
Abstract:
A process for preparing a tamperproof security document comprising in order the steps of: a) providing a security document comprising security paper having at least one image on at least one outermost surface of the security paper; b) applying by printing, coating or other application process an aqueous primer composition on at least one of the outermost surfaces of the security paper over the at least one image thereby forming a primer coating on at least the at least one image; c) drying said primer coating; d) optionally curing said primer composition; e) applying by printing, coating or other application process a crosslinkable composition over said primer coating; and f) curing said printed or coated crosslinkable composition, wherein the primer composition comprises at least one ionic fluorinated surfactant and at least one polymerizable substance selected from the group consisting of polyester acrylates, polyester methacrylates, polyurethane- and urea-based monomers.
Abstract:
A method for metallising solid substrates involves the use of non-equilibrium plasma treatment of a supported metal precursor layer. This technique can be used to make pure metal or alloy coatings. An oxidising plasma pre-treatment step of the supported metal precursor layer, or the incorporation of a plasma polymer coupling layer prior to metallisation, can result in improved adhesion. The method can be applied to the preparation of lithographic printing plate precursors.