Photochromic optical article

A photochromic article comprising, in combination:

• (a) an organic polymeric substrate selected from thermoset substrates prepared from polymerizable compositions comprising allyl diglycol carbonate monomer(s), substrates prepared from thermoplastic polycarbonates, substrates prepared from polyurea urethanes and substrates prepared from compositions comprising the reaction product of polyfunctional isocyanate(s) and polythiols or polyepisulfide monomer(s), said substrate having a refractive index of from 1.48 to 1.74,
• (b) a photochromic organic polymeric coating appended to at least one surface of said polymeric substrate, said polymeric coating comprising a photochromic amount of at least one organic photochromic material selected from spirooxazines, benzopyrans, naphthopyrans, fulgides, metal dithizonates and mixtures of such photochromic materials, said photochromic polymeric coating having a thickness of from 5 to 200 microns, and
• (c) radiation-cured, acrylate-based film coherently appended to said photochromic polymeric coating, said radiation-cured, acrylate-based film having a thickness of from 2 to 20 microns, and being:
• (1) resistant to removal by aqueous inorganic caustic,
• (2) compatible with abrasion resistant organo silane-containing coating, and
• (3) harder than the photochromic polymeric coating.

A photochromic article comprising, in combination:

• (a) a transparent organic polymeric substrate having a refractive index of from 1.48 to 1.74, said substrate being selected from thermoset and thermoplastic substrates,
• (b) a transparent photochromic organic polymeric coating appended to at least one surface of said polymeric substrate, said photochromic polymeric coating comprising a photochromic amount of at least one organic photochromic material, and
• (c) transparent radiation-cured, acrylate-based film comprising at least one acrylate-based resin layer cohesively appended to said photochromic polymeric coating, said radiation-cured acrylate-based film being:
• (1) resistant to removal by aqueous solutions of alkali metal hydroxide,
• (2) compatible with abrasion-resistant organo silane-containing coating, and
• (3) more scratch resistant than said photochromic polymeric coatings.

A photochromic article comprising, in combination:

• (a) a transparent organic polymeric substrate having a refractive index of from 1.48 to 1.74, said substrate being selected from polymerizable compositions comprising allyl diglycol carbonate monomer(s), substrates prepared from thermoplastic polycarbonates, substrates prepared from polyurea urethanes, and substrates prepared from compositions comprising the reaction product of polyfunctional isocyanate(s) and polythiols or polyepisulfide monomer(s);
• substrates,
• (b) a transparent photochromic organic polymeric coating appended to at least one surface of said polymeric substrate, wherein said photochromic polymeric coating has a thickness of from 5 to 200 microns, is selected from photochromic polyurethane-based coatings, photochromic poly(meth)acrylic-based coatings and photochromic epoxy resin-based coatings, and comprises a photochromic amount of at least one organic photochromic material selected from photochromic spirooxazines, naphthopyrans, fulgides and mixtures of such photochromic materials, and
• (c) transparent radiation-cured, acrylate-based film comprising at least one acrylate-based resin layer cohesively appended to said photochromic polymeric coating, said radiation-cured acrylate-based film being:
• (1) resistant to removal by aqueous solutions of alkali metal hydroxide,
• (2) compatible with abrasion-resistant organo silane-containing coating, and
• (3) more scratch resistant than said photochromic polymeric coating.

A photochromic article comprising, in combination:

• (a) a transparent polymeric substrate selected from thermoset substrate prepared from polymerizable compositions comprising allyl diglycol carbonate monomer(s), thermoplastic polycarbonate substrates, polyurea urethane substrates and substrates prepared from compositions comprising the reaction product of polyfunctional isocyanate(s) and polythiol(s) or polyepisulfide monomer(s), said substrate having a refractive index of between 1.48 and 1.74,
• (b) a transparent photochromic organic polymeric coating selected from photochromic polyurethane-based coatings, photochromic poly(meth)acrylic-based coatings, and photochromic epoxy resin-based coatings, said polymeric photochromic coating comprising a photochromic amount of at least one organic photochromic material, and
• (c) transparent, radiation-cured, acrylate-based film coherently appended to said photochromic coating, said radiation-cured, acrylate-based film being:
• (1) resistant to removal by dilute aqueous solutions of alkali metal hydroxide,
• (2) compatible with abrasion-resistant coating comprising at least one organo-silane, and
• (3) more scratch resistant than said photochromic polymeric coating.

A photochromic optical article comprising, in combination:

• (a) a transparent organic polymeric substrate selected from thermoset substrates prepared from a composition comprising allyl diglycol carbonate monomer(s), thermoplastic polycarbonate substrates, polyurea urethane substrates, and substrates prepared from a material comprising the reaction product of polyfunctional isocyanate(s) and polythiol(s) or polyepisulfide monomer(s),
• (b) an optically clear photochromic organic polymeric coating selected from poly(meth)acrylic-based coatings, epoxy resin-based coatings, and polyurethane-based coatings appended to at least one surface of the said polymeric substrate, the photochromic coating comprising a photochromic amount of at least one organic photochromic material, and
• (c) optically clear, radiation-cured acrylate-based film cohesively appended to said photochromic polymeric coating, the acrylate-based film being:.
• (1) resistant to removal by dilute aqueous alkali metal hydroxide solution,
• (2) compatible with organo silane-containing abrasion-resistant coating, and
• (3) more scratch resistant than said photochromic polymeric coating.

A photochromic ophthalmic article comprising, in combination:

• (a) a transparent polymeric substrate selected from thermoset substrates prepared from polymerizable compositions comprising polyol(altyl carbonate) monomer(s), substrates comprising thermoplastic polycarbonates, substrates comprising polyurea urethanes, and substrates prepared from the reaction product of polyflinctional isocyanate(s) and polythiols(s) or polyepisulfide monomers, said polymeric substrate having a refractive index of from 1.48 to 1.74,
• (b) an optically clear photochromic organic polymeric coating selected from polyurethane-based coatings, epoxy resin-based coatings, and poly(meth)acrylic-based coatings appended to at least one surface of said substrate, said photochromic polymeric coating containing a photochromic amount of at least one organic photochromic material, and
• (c) optically clear radiation-cured acrylate-based film coherently appended to said photochromic polymeric coating, said acrylate-based film being:
• (1) resistant to removal by dilute aqueous solutions of inorganic caustic selected from sodium hydroxide and potassium hydroxide,
• (2) compatible with organo silane-containing abrasion-resistant coating, and
• (3) more scratch resistant than said photochromic polymeric coating.

A photochromic ophthalmic article comprising, in combination:

• (a) a transparent polymeric substrate comprising a thermoset substrate prepared from a polymerizable composition comprising diethylene glycol bis(allyl carbonate) monomer(s), the substrate having a refractive index of from 1.50 to 1.67,
• (b) an optically clear photochromic organic polymeric coating selected from polyurethane-based coatings, epoxy resin-resin-based coatings, and poly(meth)acrylic-based coatings appended to at least one surface of said substrate, said photochromic polymeric coating having a thickness of from 10 to 100 microns, and containing a photochromic amount of at least one organic photochromic material, and
• (c) optically clear, radiation-cured, acrylate-based film cohesively appended to said photochromic coating, said radiation-cured acrylate-based film having a thickness of from 2 to 20 microns and being:
• (1) resistant to removal by dilute aqueous solutions of alkali metal hydroxide,
• (2) compatible with organo silane-containing abrasion-resistant coating, and
• (3) more scratch resistant than said photochromic polymeric coating.

A photochromic ophthalmic article comprising, in combination:

• (a) a transparent polymeric substrate comprising a thermoplastic polycarbonate substrate,
• (b) an optically clear photochromic organic polymeric coating selected from polyurethane-based coatings, epoxy resin-resin-based coatings, and poly(meth)acrylic-based coatings appended to at least one surface of said substrate, said photochromic polymeric coating having a thickness of from 10 to 100 microns, and containing a photochromic amount of at least one organic photochromic material, and
• (c) optically clear, radiation-cured, acrylate-based film cohesively appended to said photochromic coating, said radiation-cured acrylate-based film having a thickness of from 2 to 20 microns and being:
• (1) resistant to removal by dilute aqueous solutions of alkali metal hydroxide,
• (2) compatible with organo silane-containing abrasion-resistant coating, and
• (3) more scratch resistant than said photochromic polymeric coating.

A photochromic ophthalmic article comprising, in combination:,

• (a) a transparent polymeric polyurea urethane substrate,
• (b) an optically clear photochromic organic polymeric coating selected from polyurethane-based coatings, epoxy resin-resin-based coatings, and poly(meth)acrylic-based coatings appended to at least one surface of said substrate, said photochromic polymeric coating having a thickness of from 10 to 100 microns, and containing a photochromic amount of at least one organic photochromic material, and
• (c) optically clear, radiation-cured, acrylate-based film cohesively appended to said photochromic coating, said radiation-cured acrylate-based film having a thickness of from 2 to 20 microns and being:
• (1) resistant to removal by dilute aqueous solutions of alkali metal hydroxide,
• (2) compatible with organo silane-containing abrasion-resistant coating, and
• (3) more scratch resistant than said photochromic polymeric coating.

A photochromic article comprising, in combination:

• (a) a transparent polymeric substrate comprising a thermoplastic polycarbonate substrate,
• (b) a transparent photochromic organic polymeric coating appended to at least one surface of said substrate, said photochromic polymeric coating having a thickness of from 5 to 200 microns, and containing a photochromic amount of at least one organic photochromic material, and
• (c) a transparent radiation-cured, acrylate-based film cohesively appended to said photochromic coating, said radiation-cured acrylate-based film being:
• (1) resistant to removal by aqueous solutions of alkali metal hydroxide,
• (2) compatible with organo silane-containing abrasion-resistant coating, and
• (3) more scratch resistant than said photochromic polymeric coating.

A photochromic article comprising, in combination:

• (a) a transparent polymeric substrate selected from thermoset substrate prepared from polymerizable compositions comprising allyl diglycol carbonate monomer(s), thermoplastic polycarbonate substrates, polyurea urethane substrates and substrates prepared from compositions comprising the reaction product of polyfunctional isocyanate(s) and polythiol(s) or polyepisulfide monomer(s), said substrate having a refractive index of between 1.48 and 1.74,
• (b) a transparent photochromic organic polymeric coating selected from photochromic polyurethane-based coatings, photochromic poly(meth)acrylic-based coatings, and photochromic epoxy resin-based coatings, said polymeric photochromic coating comprising a photochromic amount of at least one organic photochromic material, and
• (c) transparent, radiation-cured, acrylate-based film coherently appended to said photochromic coating, said radiation-cured, acrylate-based film being:
• (1) resistant to removal by dilute aqueous solutions of alkali metal hydroxide,
• (2) compatible with abrasion-resistant coating comprising at least one organo-silane, and
• (3) having a Bayer Haze Gain Ratio of greater than 0.6.