Claims
- 1. A plastic lens composition comprising a component (α) shown below as an essential component, wherein a cured material, obtained by curing said composition, has a refractive index of 1.58 or more at 25° C. and a specific gravity of 1.40 or less at 23° C.:
Component (α):
a compound having at least one group represented by the following formula (1) as a terminal group and a group represented by the following formula (2) as a repeating unit: 38wherein each R1 independently represents an allyl group or a methallyl group and each A1 independently represents an organic residue derived from a dicarboxylic acid or a carboxylic anhydride; 39wherein each A2 independently represents an organic residue derived from a dicarboxylic acid or a carboxylic anhydride and each X is independently an organic residue and the X's represent one or more organic residues containing, as an essential component, an organic residue derived from a bromine-containing compound having two or more hydroxyl groups, provided that, by the ester bonding, X can have a branched structure having a group of formula (1) as a terminal group and a group of formula (2) as a repeating unit.
- 2. A plastic lens composition comprising a component (α) and a component (β) shown below, wherein a cured material, obtained by curing said composition, has a refractive index of 1.58 or more at 25° C. and a specific gravity of 1.40 or less at 23° C.:
Component (α):
a compound having at least one group represented by the following formula (1) as a terminal group and a group represented by the following formula (2) as a repeating unit, in an amount of 10 to 60% by mass based on whole curable components: 40wherein each R1 independently represents an allyl group or a methallyl group and each A1 independently represents an organic residue derived from a dicarboxylic acid or a carboxylic anhydride; 41wherein each A2 independently represents an organic residue derived from a dicarboxylic acid or a carboxylic anhydride and each X is independently an organic residue and the X's represent one or more organic residues containing, as an essential component, an organic residue derived from a bromine-containing compound having two or more hydroxyl groups, provided that, by the ester bonding, X can have a branched structure having a group of formula (1) as a terminal group and a group of formula (2) as a repeating unit; Component (β):
at least one compound selected from the group consisting of compounds represented by the following formulae (3) and (4), in an amount of 10 to 90% by mass based on whole curable components: 42wherein R2 and R3 each independently represents an allyl group or a methallyl group; 43wherein R4 and R5 each independently represents an allyl group or a methallyl group.
- 3. A plastic lens composition comprising a component (α), a component (β) and a component (γ) shown below, wherein a cured material, obtained by curing said composition, has a refractive index of 1.58 or more at 25° C. and a specific gravity of 1.40 or less at 23° C.:
Component (α):
a compound having at least one group(9) represented by the following formula (1) as a terminal group and a group represented by the following formula (2) as a repeating unit, in an amount of 10 to 60% by mass based on whole curable components: 44wherein each R1 independently represents an allyl group or a methallyl group and each A1 independently represents an organic residue derived from a dicarboxylic acid or a carboxylic anhydride; 45wherein each A2 independently represents an organic residue derived from a dicarboxylic acid or a carboxylic anhydride and each X is independently an organic residue and the X's represent one or more organic residues containing, as an essential component, an organic residue derived from a bromine-containing compound having two or more hydroxyl groups, provided that, by the ester bonding, X can have a branched structure having a group of formula (1) as a terminal group and a group of formula (2) as a repeating unit; Component (β):
at least one compound selected from the group consisting of compounds represented by the following formulae (3) and (4), in an amount of 10 to 90% by mass based on whole curable components: 46wherein R2 and R3 each independently represents an allyl group or a methallyl group; 47wherein R4 and R5 each independently represents an allyl group or a methallyl group; Component (γ):
at least one compound selected from the group consisting of dibenzyl maleate, diphenyl maleate, dibenzyl fumarate, diphenyl fumarate, (meth)allyl 2-phenylbenzoate, (meth)allyl 3-phenylbenzoate, (meth)allyl 4-phenylbenzoate, (meth)allyl α-naphthoate, (meth)allyl β-naphthoate, (meth)allyl o-chlorobenzoate, (meth)allyl m-chlorobenzoate, (meth)allyl p-chlorobenzoate, (meth)allyl 2,6-dichlorobenzoate, (meth)allyl 2,4-dichlorobenzoate, (meth)allyl o-bromobenzoate, (meth)allyl m-bromobenzoate and (meth)allyl p-bromobenzoate, in an amount of 0 to 20% by mass based on whole curable components.
- 4. A plastic lens composition, as claimed in any one of claims 1 to 3, wherein the bromine-containing compound is at least one compound selected from the compounds represented by the following formulae (9) and (10):
- 5. A plastic lens composition, as claimed in any one of claims 1 to 4, which has a viscosity at 25° C. of less than 400 mPa.s.
- 6. A plastic lens composition, as claimed in any one of claims 1 to 5, which further comprises at least one ultraviolet absorbent and/or at least one light stabilizer in an amount of 0.01 to 2 parts by mass per 100 parts by mass of whole curable components in the plastic lens composition.
- 7. A plastic lens composition, as claimed in claim 6, wherein at least one of the ultraviolet absorbent is a compound having a moiety represented by the following structural formula (26) within the molecule:
- 8. A plastic lens composition, as claimed in any one of claims 1 to 7, which further comprises at least one antioxidant in an amount of 0.01 to 5 parts by mass per 100 parts by mass of whole curable components in the plastic lens composition.
- 9. A plastic lens composition, as claimed in claim 8, wherein at least one of the antioxidants is a phosphite-based antioxidant.
- 10. A plastic lens composition, as claimed in any one of claims 1 to 9, which further comprises at least one radical polymerization initiator in an amount of 0.1 to 10 parts by mass per 100 parts by mass of whole curable components in the plastic lens composition.
- 11. A plastic lens composition, as claimed in claim 10, wherein at least one of the radical polymerization initiators is a compound having a structure represented by the following formula (94):
- 12. A plastic lens having a refractive index of 1.58 or more at 25° C. and a specific gravity of 1.40 or less at 23° C., which is obtained by curing a plastic lens composition as set forth in any one of claims 1 to 11.
- 13. A plastic lens having a refrative index of 1.58 or more at 25° C., a specific gravity of 1.40 or less at 23° C., a carbon concentration by elemental analysis of 50.0 to 70.0% by mass and a bromine concentration by elemental analysis of 9.0 to 15.0% by mass.
- 14. A process for producing a plastic lens, comprising curing a plastic lens composition as set forth in any one of claims 1 to 11.
- 15. A process, as claimed in claim 14, wherein the plastic lens composition is cured by cast polymerization at a polymerization temperature of 30 to 120° C. for a polymerization time of 0.5 to 100 hours.
Priority Claims (3)
Number |
Date |
Country |
Kind |
2000-295737 |
Sep 2000 |
JP |
|
2001-175017 |
Jun 2001 |
JP |
|
2001-275062 |
Sep 2001 |
JP |
|
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application is an application filed under 35 U.S.C. §111(a) claiming benefit, pursuant to 35 U.S.C. §119(e)(1) of the filing date of the Provisional Application 60/244,605 filed Nov. 1, 2000, pursuant to 35 U.S.C. §111(b).
PCT Information
Filing Document |
Filing Date |
Country |
Kind |
PCT/JP01/08398 |
9/26/2001 |
WO |
|