| 摘要 |
PROBLEM TO BE SOLVED: To obtain a composition having excellent durability of adhesion to noble metals and noble metal alloys by compounding a sulfur compound having a sulfur residue and/or a salt thereof, a silane coupling agent bearing a polymerizable group, and a solvent and/or a polymerizable monomer. SOLUTION: A sulfur compound and its salt have a polymerizable group and a sulfur residue exhibiting excellent adhesive properties to a noble metal (gold in particular), and there can be exemplified, for example, a compound represented by formula I, and the like. A silane coupling agent contains a polymerizable group such as a (meth)acryloyl group or the like in the molecule, and there can be exemplified, for example, a compound represented by formula II, wherein Q is O, S or NH; q is 2-20; and R is a halogen or an alkoxy, and the like. As a solvent, is employed, for example, a volatile organic solvent having a boiling point at ordinary pressure of 250 deg.C or lower (e.g. ethanol), water or a mixture thereof. As a polymerizable monomer, is employed usually a monomer, for example,α-cyanoacrylic acid or the like.
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