Photopolymerizable composition and use thereof
A photopolymerizable composition comprising a polymerizable compound and a photopolymerization initiator, wherein the polymerizable compound is characterized by comprising (a) a bifunctional (meth)acrylic acid (thio)ester compound containing a sulfur atom in the molecule and (b) at least one of a (meth)acrylic acid ester compound represented by the general formula (1) or a bifunctional (meth)acrylic acid ester compound having a urethane linkage: wherein R 1 and R 2 are each independently a hydrogen atom or a methyl group; R 3 and R 4 are each independently an alkyl group, an aralkyl group, an aryl group or a halogen atom; m and n are each an integer of 0 to 2; X 1 is an alkylidene group having 1 to 3 carbon atoms; and Y 1 and Y 2 are each independently a poly(oxyalkylene) group with the proviso that at least one of Y 1 and Y 2 is a poly(oxyalkylene) group having a hydroxy group.
1. A photopolymerizable composition comprising a polymerizable compound and a photopolymerization initiator, wherein the polymerizable compound comprises (a) a bifunctional (meth)acrylic acid (thio)ester compound containing a sulfur atom in the molecule represented by the following general formula (2):
wherein R 5 is a chain alkylene group having one or more sulfur atoms in the group or R 5 is the following linking group; R 6 and R 7 are each independently a hydrogen atom or an alkyl group; and Z 1 and Z 2 are each independently an oxygen atom or a sulfur atom with the proviso that one of Z 1 and Z 2 is a sulfur atom in case R 5 is the following linking group:
wherein R 13 is an alkyl group, an aralkyl group, an aryl group or a halogen atom; and r is an integer from 0 to 2, and (b) at least one of a (meth)acrylic acid ester compound represented by the following general formula (1) and a bifunctional (meth)acrylic acid ester compound having a urethane linkage:
wherein R 1 and R 2 are each independently a hydrogen atom or a methyl group; R 3 and R 4 are each independently an alkyl group, an aralkyl group, an aryl group or a halogen atom; m and n are each an integer of 0 to 2; X 1 is an alkylidene group having 1 to 3 carbon atoms; and Y 1 and Y 2 are each independently a poly(oxyalkylene) group with the proviso that at least one of Y 1 and Y 2 is a poly(oxyalkylene) group having a hydroxy group.
2. A photopolymerizable composition comprising a polymerizable compound and a photopolymerization initiator, wherein the polymerizable compound comprises (a) a bifunctional (meth)acrylic acid (thio)ester compound containing a sulfur atom in the molecule represented by the following general formula (2):
wherein R 5 is a chain alkylene group having one or more sulfur atoms in the group or R 5 is the following linking group; R 6 and R 7 are each independently a hydrogen atom or an alkyl group; and Z 1 and Z 2 are each independently an oxygen atom or a sulfur atom with the proviso that one of Z 1 and Z 2 is a sulfur atom in case R 5 the following linking group:
wherein R 13 is an alkyl group, an aralkyl group, an aryl group or a halogen atom; and r is an integer from 0 to 2, and (b) a (meth)acrylic acid ester compound represented by the following general formula (1):
wherein R 1 and R 2 are each independently a hydrogen atom or a methyl group; R 3 and R 4 are each independently an alkyl group, an aralkyl group, an aryl group or a halogen atom; m and n are each an integer of 0 to 2; X 1 is an alkylidene group having 1 to 3 carbon atoms; and Y 1 and Y 2 are each independently a poly(oxyalkylene) group having a hydroxy group.
3. The photopolymerizable composition according to claim 1 , wherein the polymerizable compound further comprises (c) polythiols.
4. The composition according to claim 3 , wherein Y 1 and Y 2 groups in the general formula (1) are the following group:
5. A cured product obtained by polymerizing the photopolymerizable composition as described in claim 4 .
6. Optical parts made of the cured product as described in claim 5 .
7. A light emitting element made by sealing with the cured product as described in claim 5 .
8. The composition according to claim 1 , wherein Y 1 and Y 2 groups in the general formula (1) are the following group:
9. A cured product obtained by polymerizing the photopolymerizable composition as described in claim 1 .
10. Optical parts made of the cured product as described in claim 9 .
11. A light emitting element made by sealing with the cured product as described in claim 9 .
12. The photopolymerizable composition according to claim 2 , wherein the polymerizable compound further comprises (c) polythiois.
13. The composition according to claim 12 , wherein Y 1 and Y 2 groups in the general formula (1) are the following group:
14. A cured product obtained by polymerizing the photopolymerizable composition as described in claim 13 .
15. Optical parts made of the cured product as described in claim 14 .
16. A light emitting element made by sealing with the cured product as described in claim 14 .
17. The composition according to claim 2 , wherein Y 1 and Y 2 groups in the general formula (1) are the following group:
18. A cured product obtained by polymerizing the photopolymerizable composition as described in claim 2 .
19. Optical parts made of the cured product as described in claim 18 .
20. A light emitting element made by sealing with the cured product as described in claim 18 .