PURPOSE: To provide the titled composition capable of forming a coating film having excellent adhesivity to the substrate, and suitable for the protection of a product, by compounding a cationically polymerizable compound composed mainly of epoxy resin, a specific photo-initiator, a phosphoric acid derivative and a radical photo-sensitizer.
CONSTITUTION: The objective composition is prepared by compounding (A) one or more cationically polymerizable compounds composed mainly of an epoxy resin (e.g. bisphenol A epoxy resin) having ≥2 oxirane ring in the molecule, with (B) 0.5W10wt% of a photo-initiator releasing a Lewis acid catalyst capable of polymerizing the component (A) by high energy radiation (e.g. an aromatic halonium salt of formula I , etc.), (C) 0.1W30wt% of a phosphoric acid derivative of formula II [at least one of R, R1 and R2 is an organic group having (meth) acryloyl group], e.g. the compound of formula III, and (D) 0.1W10wt% of a radical photo-sensitizer (e.g. anthraquinone).
TAKAHAMA TAKASHI
INOUE MASAMI
SUZUKI YASUHIRO
| JPS5410400A | 1979-01-25 | |||
| JPS50151996A | 1975-12-06 |
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