Thiol compound, photopolymerization initiator composition and photosensitive composition
AssigneeShowa Denko K.K.
InventorsTsuyoshi Katoh, Hirotoshi Kamata, Mina Onishi
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Abstract
A photopolymerization initiator composition containing a thiol compound having a mercapto group-containing group that has at least one substituent on the carbon atoms on carbon atom(s) at the α- and/or β-position with respect to the mercapto group and a photopolymerization initiator; a photosensitive composition containing the composition; and a novel thiol compound for use in these compositions. The photosensitive composition containing the photopolymerizazion initiator composition of the present invention has high sensitivity and excellent storage stability and enables reduction in cost due by increasing productivity.
Claims24
A photopolymerization initiator composition, comprising a thiol compound having a mercapto group-containing group that has at least one substituent on carbon atom(s) at the α- and/or β-position to the mercapto group and a photopolymerization initiator, wherein at least one of the substituents on carbon atom(s) at the α- and/or β-position to the mercapto group is an alkyl group, wherein the thiol compound is a compound comprising a mercapto group-containing group represented by formula (1)
- wherein R1 and R2 represent each independently a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, provided that at least one of R1 and R2 is an alkyl group, and (m, n) is (1, 0), (1, 1), (2, 0) or (2, 1).
A thiol compound which is an ester compound derived from a mercapto group-containing carboxylic acid represented by formula (2) and a polyfunctional alcohol
- wherein R1 and R2 represent each independently a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, provided that at least one of R1 and R2 is an alkyl group, and (m, n) is (1, 1), (2, 0) or (2, 1).
Dependencies are inferred from the claim text.