Photocuring/thermosetting ink jet composition and printed wiring board using same

A photocuring/thermosetting inkjet composition contains (A) a monomer having a (meth)acryloyl group and a thermosetting functional group in the molecule, (B) a photoreactive diluent other than the component (A) having a weight-average molecular weight of not more than 700, and (C) a photopolymerizat...

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Hauptverfasser: USHIKI, SHIGERU, KAKINUMA, MASAHISA, KUSAMA, MASATOSHI
Format: Patent
Sprache:eng
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Zusammenfassung:A photocuring/thermosetting inkjet composition contains (A) a monomer having a (meth)acryloyl group and a thermosetting functional group in the molecule, (B) a photoreactive diluent other than the component (A) having a weight-average molecular weight of not more than 700, and (C) a photopolymerization initiator, and has a viscosity of not more than 150 mPa.s at 25 DEG C. A solder resist pattern is directly drawn on a printed wiring board by an inkjet printer using the above-mentioned composition, and the pattern is primarily cured by irradiation with an active energy beam and then further cured by heat.