Benzodioxino-naphtho[1,2-b]pyran compounds having particularly advantageous photochromic properties, such as, high sensitivity/coloration, two distinct absorption bands in the 430-500 nm range and 520-620 nm range of the visible spectrum may be generally described as a naphthopyran having a central nucleus of the formula: wherein F is a 1,4-benzodioxine ring.
This invention relates to novel naphthopyrans having an oxygen-containing heterocyclic group F annelated on the i, j, or k side of the naphthopyran ring, having certain substituents at the 2, 5, and 6 positions of the naphthopyran ring. These naphthopyrans may have the formula (I) presented below: These compounds (I) have interesting photochromic properties. Also related to this invention are host materials that contain such naphthopyran compounds, and articles such as ophthalmic lenses or other plastic transparencies that incorporate the naphthopyran compounds.
Photochromic Naphthopyran Compounds: Compositions And Articles Containing Those Naphthopyran Compounds
This invention relates to novel naphthopyrans having an oxygen-containing heterocyclic group F annelated on the i, j, or k side of the naphthopyran ring, having certain substituents at the 2, 5, and 6 positions of the naphthopyran ring. These naphthopyrans may have the formula (I) presented below:.
Xuzhi Qin - Hacienda Heights CA, US Hideyo Sugimura - North Oaks MN, US Michael S. Boulineau - Forest Lake MN, US Thomas J. Moravec - Maple Grove MN, US Derek Harris - Woodbury MN, US
Assignee:
Insight Equity A.P.X., L.P. - Ramsey MN
International Classification:
B29D 11/00
US Classification:
264 17, 264 132
Abstract:
A cast photochromic lens including a photochromic film and a cast resin, curable by heat or radiation.
Xuzhi Qin - Hacienda Heights CA, US Hideyo Sugimura - North Oaks MN, US Michael S. Boulineau - Forest Lake MN, US
Assignee:
Insight Equity, A.P.X, LP - Ramsey MN
International Classification:
C08G 65/04 B32B 27/40
US Classification:
428412, 4284228, 4284231
Abstract:
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.
Xuzhi Qin - Hacienda Heights CA, US Hideyo Sugimura - North Oaks MN, US Michael S. Boulineau - Forest Lake MN, US Thomas J. Moravec - Maple Grove MN, US Derek Harris - Woodbury MN, US
Assignee:
Insight Equity A.P.X, L.P. - Ramsey MN
International Classification:
B32B 27/40
US Classification:
4284231, 4284244, 428412
Abstract:
A cast photochromic lens including a photochromic film and a cast resin, curable by heat or radiation.
Novel naphthopyrans having an oxygen-containing heterocyclic group F annelated on the f, i, j, or k side of the naphthopyran ring. These naphthopyrans may have the formula (I) presented below: These compounds (I) have interesting photochromic properties. Various organic host materials that contain such compounds are described. Articles such as ophthalmic lenses or other plastic transparencies that incorporate the novel naphthopyran compounds or combinations are enabled.