Claims
- 1. An ultraviolet and/or visible light curing photopolymerizable composition comprising: (a) a thermoplastic polymer obtained by copolymerization of at least one monomer selected from the group consisting of .alpha.,.beta.-unsaturated carboxyl group-containing monomers with at least one monomer selected from the group consisting of compounds represented by formula (3) below ##STR5## wherein R.sub.7 is hydrogen, an alkyl group having 1-6 carbon atoms or a halogen atom, and their ring-substituted derivatives, at least one monomer selected from the group consisting of alkyl acrylates with alkyl groups of 1-8 carbon atoms and hydroxyalkyl acrylates with hydroxyalkyl groups of 2-8 carbon atoms, and at least one monomer selected from the group consisting of alkyl methacrylates with alkyl groups of 1-8 carbon atoms and hydroxyalkyl methacrylates with hydroxyalkyl groups of 2-8 carbon atoms, (b) a crosslinking monomer with 2 or more ethylenic unsaturated groups per molecule and (c) an ultraviolet and/or visible light sensitive photopolymerization initiator, in which said ultraviolet and/or visible light sensitive photopolymerization initiator comprises a compound represented by formula (1) below and a cationic dye or an electrically neutral dye ##STR6## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 may be the same or different, and each independently represents an alkyl, alkenyl, aryl, aralkyl, heterocyclic or alicyclic group, and Z.sup.+ represents a quaternary ammonium cation, quaternary pyridinium cation, quaternary quinolinium cation, phosphonium cation, sulfonium cation, oxonium cation, iodonium cation or metal cation.
- 2. A composition according to claim 1, wherein the .alpha.,.beta.-unsaturated carboxyl group-containing monomer is a monomer with 3-15 carbon atoms.
- 3. A composition according to claim 1, wherein the thermoplastic polymer is a thermoplastic polymer obtained by copolymerization of 15-30 wt % of one or more compounds selected from among .alpha.,.beta.-unsaturated carboxy group-containing monomers and 85-70 wt % of the combination of at least one monomer selected from the group consisting of compounds represented by formula (3) below ##STR7## wherein R.sub.7 is hydrogen, an alkyl group having 1-6 carbon atoms or a halogen atom, and their ring-substituted derivatives, at least one monomer selected from the group consisting of alkyl acrylates with alkyl groups of 1-8 carbon atoms and hydroxyalkyl acrylates with hydroxyalkyl groups of 2-8 carbon atoms, and at least one monomer selected from the group consisting of alkyl methacrylates with alkyl groups of 1-8 carbon atoms and hydroxyalkyl methacrylates with hydroxyalkyl groups of 2-8 carbon atoms.
- 4. A composition according to claim 1, which contains (a) 40-70 wt % of the thermoplastic polymer, (b) 25-50 wt % of the crosslinking monomer and (c) 0.1-10 wt % of the ultraviolet and/or visible light sensitive photopolymerizable initiator.
- 5. A composition according to claim 4, wherein the content of the crosslinking monomer is at least 65 wt % with respect to the thermoplastic polymer.
- 6. A composition according to claim 1, wherein the ultraviolet and/or visible light sensitive photopolymerizable initiator comprises a compound represented by general formula (2) below and a cationic dye or an electrically neutral dye ##STR8## wherein R.sub.5 and R.sub.6 may be the same or different and each independently represents hydrogen or an alkyl, alkenyl, alkoxyl, aryl, aralkyl, heterocyclic or alicyclic group, R.sub.5 may be at any positions on the naphthalene rings, and Z.sup.+ represents a quaternary ammonium cation, a quaternary pyridinium cation, a quaternary quinolinium cation, a phosphonium cation, a sulfonium cation, an oxonium cation, an iodonium cation or a metal cation.
- 7. A composition according to claim 1, wherein a chain transfer agent is added to the ultraviolet and/or visible light sensitive photopolymerizable initiator.
- 8. A dry film resist whose main component is a composition according to claim 1.
- 9. A dry film resist according to claim 8, wherein the ultraviolet and/or visible light sensitive photopolymerizable initiator is a photopolymerizable initiator with photosensitivity to light of 478, 488 or 532 nm.
Priority Claims (1)
Number |
Date |
Country |
Kind |
9-174171 |
Jun 1997 |
JPX |
|
CROSS REFERENCE TO RELATED APPLICATIONS
This application is an application filed under 35 U.S.C. .sctn.111(a) claiming benefit pursuant to 35 U.S.C. .sctn.119(e)(1) of the filing date of the Provisional Application 60/074,613, filed Feb. 13, 1998, pursuant to 35 U.S.C. .sctn.111(b).
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