| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a polymerizable composition carrying out polymerization and molding processing in a short time by photopolymerization and affording a resin cured product having good transparency, optical characteristics (refractive index and Abbe's number), heat resistance, mechanical characteristics, and the like, and to provide an optical part obtained by polymerizing the polymerizable composition. <P>SOLUTION: The polymerizable composition comprises a compound (A) having at least ≥2 carbon-carbon unsaturated bonds in the molecule, a compound (B) having at least ≥2 thiol groups in the molecule and a polymerization initiator (C). The polymerizable composition is characterized as comprising at least ≥1 kinds of compounds represented by formula (1) (wherein, R<SB>1</SB>to R<SB>9</SB>denote each independently hydrogen atom, a substituted or an unsubstituted alkyl group, a substituted or an unsubstituted aryl group or a substituted or an unsubstituted aralkyl group; and A denotes an O or an S) as the compound (A) having at least the ≥2 carbon-carbon unsaturated bonds in the molecule and at least one kind of thiol compound represented by formula (2) or formula (3) as the compound (B) having at least the ≥2 thiol groups in the molecule, and further a polymerization accelerator. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
