A photochromic polyurethane laminate that is constructed to solve certain manufacturing difficulties involved in the production of plastic photochromic lenses is disclosed. The photochromic laminate includes at least two layers of a resinous material and a photochromic polyurethane layer that is int
A photochromic polyurethane laminate that is constructed to solve certain manufacturing difficulties involved in the production of plastic photochromic lenses is disclosed. The photochromic laminate includes at least two layers of a resinous material and a photochromic polyurethane layer that is interspersed between the two resinous layers and which contains photochromic compounds. The polyurethane layer is formed by curing a mixture of a solid thermoplastic polyurethane, at least one isocyanate prepolymer, at least one photochromic compound, and a stabilizing system.
대표청구항▼
1. A photochromic polyurethane laminate for use in an optical article comprising: a first resin sheet;a second resin sheet; anda photochromic polyurethane layer having a top side attached to said first resin sheet and a bottom side attached to said second resin sheet, said photochromic polyurethane
1. A photochromic polyurethane laminate for use in an optical article comprising: a first resin sheet;a second resin sheet; anda photochromic polyurethane layer having a top side attached to said first resin sheet and a bottom side attached to said second resin sheet, said photochromic polyurethane layer prepare from a composition comprising: a solid thermoplastic polyurethane prepared from a composition comprising at least one diisocyanate selected from a group consisting of: aliphatic diisocyanate and cycloaliphatic diisocyanate;at least one isocyanate-terminated polyurethane prepolymer; andat least one photochromic compound;wherein said photochromic polyurethane laminate has a molecular structure resulting from curing said laminate within a temperature range from about 50 degrees Celsius to about 130 degrees Celsius. 2. A photochromic polyurethane laminate according to claim 1, wherein said solid thermoplastic polyurethane, having a molecular weight in the range of about 9,000 to 100,000 g/mole, is obtained by reacting a) a polyol selected from a group consisting of polyester polyols and polyether polyols, having a molecular weight in the range of about 500 to 6,000 g/mol, and a functionality of 2;b) with said diisocyanate in an equivalent ratio of diisocyanate to polyol in the range of about 1.2:1.0 to 8.0:1.0;c) with a diol as a chain extender having a molecular weight in the range of about 62 to 499 g/mol, the theoretical NCO index calculated by multiplying 100 to the equivalent ratio of isocyanate groups to the sum of the hydroxyl groups of polyol and diol being within a range of about 90 to 105. 3. A photochromic polyurethane laminate according to claim 1, wherein said isocyanate-terminated polyurethane prepolymer, having a molecular weight in the range of about 1,000 to 6,000 g/mole, is obtained by reacting a) a polyol selected from a group consisting of polyester polyols and polyether polyols, having a molecular weight in a range of about 500 to 3000 g/mol and a functionality of 2;b) with an aliphatic diisocyanate, a cycloaliphatic diisocyanate, or both, in an equivalent ratio of diisocyanate to polyol in a range of about 1.2:1.0 to 8.0:1.0. 4. A photochromic polyurethane laminate according to claim 1, wherein said photochromic compound is selected from the group consisting essentially of benzopyrans, naphthopyrans, spirobenzopyrans, spironaphthopyrans, spirobenzoxzines, spironaphthoxazines, fulgides and fulgimides. 5. A photochromic polyurethane laminate according to claim 1, wherein the resin material for said resin sheets are selected from a group consisting of polycarbonates, cycloolefin (co)polymers, polymers from acrylate derivatives, cellulose acetate butyrate, cellulose triacetate. 6. A photochromic polyurethane laminate according to claim 2, wherein said polyester polyol is selected from a group consisting of polycaprolactone polyol and poly(butylene adipate) polyol. 7. A photochromic polyurethane laminate according to claim 2, wherein said polyether polyol is selected from a group consisting of polypropylene glycol and polytetramethylene glycol. 8. A photochromic polyurethane laminate according to claim 2, wherein said diisocyanante is selected from a group consisting of hexamethylene diisocyanate, isophorone diisocyanate, cyclohexane diisocyanate, methylcyclohexane diisocyanate, and dicyclohexylmethane diisocyanate. 9. A photochromic polyurethane laminate according to claim 2, wherein said diol is selected from a group consisting of propane diol, butane diol, pentane diol, hexane diol, diethylene glycol, dipropylene glycol, and cyclohexane diol. 10. A photochromic polyurethane laminate according to claim 3, wherein said polyester polyol is selected from a group consisting of polycaprolactone polyol and poly(butylene adipate) polyol. 11. A photochromic polyurethane laminate according to claim 3, wherein said polyether polyol is selected from a group consisting of polypropylene glycol and polytetramethylene glycol. 12. A photochromic polyurethane laminate according to claim 3, wherein said diisocyanante is selected from a group consisting of hexamethylene diisocyanate, isophorone diisocyanate, cyclohexane diisocyanate, methylcyclohexane diisocyanate, and dicyclohexylmethane diisocyanate. 13. A photochromic polyurethane laminate according to claim 1, wherein said photochromic polyurethane layer has a thickness in a range of about 10 μm to about 100 μm. 14. A photochromic polyurethane laminate according to claim 4, wherein said photochromic compound is selected from the group consisting essentially of naphtho[2,1b]pyrans and naphtho[1,2b]pyrans. 15. A photochromic polyurethane laminate according to claim 1, wherein the mixing ratio of said thermoplastic polyurethane to said isocyanate-terminated polyurethane prepolymer is in a range of about 9:1 to 1:9, by weight. 16. A photochromic polyurethane layer for use in an optical laminate prepared from a mixture comprising: a solid thermoplastic polyurethane prepared from a composition comprising at least one diisocyanate selected from a group consisting of: aliphatic diisocyanate and cycloaliphatic diisocyanate;at least one isocyanate-terminated polyurethane prepolymer; andat least one photochromic compound. 17. The photochromic polyurethane layer of claim 16 wherein said solid thermoplastic polyurethane, having a molecular weight in the range of about 9,000 to 100,000 g/mole, is obtained by reacting a) a polyol selected from a group consisting of polyester polyols and polyether polyols, having a molecular weight in the range of about 500 to 6,000 g/mol, and a functionality of 2;b) with said diisocyanate in an equivalent ratio of diisocyanate to polyol in the range of about 1.2:1.0 to 8.0:1.0;c) with a diol as a chain extender having a molecular weight in the range of about 62 to 499 g/mol, the theoretical NCO index calculated by multiplying 100 to the equivalent ratio of isocyanate groups to the sum of the hydroxyl groups of polyol and diol being within a range of about 90 to 105. 18. The photochromic polyurethane layer of claim 16 wherein the isocyanate-terminated polyurethane prepolymer, having a molecular weight in the range of about 1,000 to 6,000 g/mole, is obtained by reacting a) a polyol selected from a group consisting of polyester polyols and polyether polyols, having a molecular weight in a range of about 500 to 3000 g/mol and a functionality of 2;b) with an aliphatic diisocyanate, a cycloaliphatic diisocyanate, or both, in an equivalent ratio of diisocyanate to polyol in a range of about 1.2:1.0 to 8.0:1.0. 19. The photochromic polyurethane layer of claim 16 wherein the layer has a thickness between 5 micrometers and 80 micrometers. 20. The photochromic polyurethane layer of claim 16 wherein the layer has a variation in thickness of less than 15 percent.
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Ligas John S. (Palm Harbor FL) Misura ; Jr. Michael S. (Barberton OH) Welch Cletus N. (Murrysville PA), Photochromic compositions of improved fatigue resistance.
Tanaka Takashi (Shinnanyo JPX) Tanaka Kenji (Tokuyama JPX) Imura Satoshi (Tokuyama JPX) Kida Yasuji (Kudamatsu JPX), Photochromic compound, process for production thereof, use thereof and composition containing said photochromic compound.
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