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|1. (WO2018087052) SOLDER MASK INKJET INKS FOR MANUFACTURING PRINTED CIRCUIT BOARDS|
ELECTRA POLYMER LTD.
VAN AERT, Hubertus
|Title:||SOLDER MASK INKJET INKS FOR MANUFACTURING PRINTED CIRCUIT BOARDS|
The invention provides an inkjet method for producing a solder mask in the manufacture of a Printed Circuit Board. By using a solder mask inkjet ink containing at least one photo-initiator, at least one free radical polymerizable compound and at least one RAFT compound as adhesion promoter, a high quality solder mask withstanding the high thermal stress during the soldering process while maintaining excellent physical properties, may be produced.