WO1996030357A1 - Spiropyrannes photochromiques, compositions et articles les contenant - Google Patents
Spiropyrannes photochromiques, compositions et articles les contenant Download PDFInfo
- Publication number
- WO1996030357A1 WO1996030357A1 PCT/FR1996/000429 FR9600429W WO9630357A1 WO 1996030357 A1 WO1996030357 A1 WO 1996030357A1 FR 9600429 W FR9600429 W FR 9600429W WO 9630357 A1 WO9630357 A1 WO 9630357A1
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- WO
- WIPO (PCT)
- Prior art keywords
- photochromic
- poly
- radicals
- compounds
- polymer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
- C07D311/96—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings spiro-condensed with carbocyclic rings or ring systems
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/15—Heterocyclic compounds having oxygen in the ring
- C08K5/151—Heterocyclic compounds having oxygen in the ring having one oxygen atom in the ring
- C08K5/1545—Six-membered rings
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K9/00—Tenebrescent materials, i.e. materials for which the range of wavelengths for energy absorption is changed as a result of excitation by some form of energy
- C09K9/02—Organic tenebrescent materials
Definitions
- the present invention relates to new compounds of the spiropyran type and having, in particular, photochromic properties. It also relates to photochromic compositions and ophthalmic articles (eg lenses) containing these spiropyrans.
- Photochromic compounds are capable of changing color under the influence of poly- or monochromatic light (eg UV) and of regaining their initial color when the light irradiation ceases or under the influence of poly- or monochromatic different from the first or under the influence of temperature and / or poly- or monochromatic light different from the first.
- poly- or monochromatic light eg UV
- photochromic compounds find applications in various fields, for example, for the manufacture of ophthalmic lenses, contact lenses, sun protection glasses, filters, camera optics or photographic cameras or other optical and observation devices, glazing, decorative objects, display elements or even for the storage of information by optical inscription (coding).
- a photochromic lens comprising one or more photochromic compounds must exhibit, in a wide range of temperatures (- 20 ° C to + 50 ° C), a high transmission in the dark or in the absence of sunlight, weak transmission (strong colorability) under solar irradiation, fast coloring and discoloration kinetics, significant durability with optimal efficiency and a pleasant shade acceptable to the consumer (gray or preferably brown).
- UV ultraviolet
- patent applications WO 95/00 504 and WO-A-95/05 382 and US patent 5,395,567 describe naphtho- or heterobenzopyrans diphenyls in which the two phenyl residues, linked in position 2 of the pyran ring, are bridged by a direct ⁇ bond or groups:
- Bridging is proposed in order to reduce the rate of diffusion of these products in a polymer matrix.
- Products in which the bridging is formed by a direct bond are photochemically unstable. Those whose bypass is
- one of the essential objectives of the present invention is to provide new compounds, in particular photochromic compounds, belonging to the family of spiropyrans which do not have the drawbacks of known photochromes of the same type.
- the invention relates to spiropyrans having
- Another objective of the invention relates to the use of photochromic compounds in the field of ophthalmic optics and, in particular, for their use in and / or on ophthalmic lenses, that is to say, in sense of the invention, spectacle lenses (sunglasses), contact lenses, lenses of optical devices, among others.
- another objective of the invention aims to provide compositions comprising said photochromic compounds and intended, for example, to be used for coating ophthalmic lenses or as as chromogenic agents constituting said lenses.
- Another objective of the invention is to provide the photochromic compound in the form of polymers and / or crosslinking agents
- Another objective of the invention is to provide an organic polymer or copolymer matrix and / or an inorganic matrix, comprising the above-mentioned photochromic compounds in polymer form or not.
- Another objective of the invention relates to ophthalmic articles, for example of the lens type (glasses of sunglasses e. G), glazing, glazing elements, optical components, sensors, coding devices, storage or display of information containing the photochromic compounds referred to above in polymer form or not, and / or the compositions comprising them, and / or the organic polymer matrices or the mineral matrices including these compounds and / or compositions.
- the lens type glasses of sunglasses e. G
- glazing glazing elements
- optical components sensors
- sensors coding devices
- the present invention relates to a compound, in particular photochromic,
- R 2 , R 3 , R 4 , R 5 , R 6 , R 7 are identical or different and represent: "hydrogen,
- At least two of the radicals R 4 , R 5 , R 6 , R 7 can optionally form at least one aromatic or aliphatic ring having, advantageously, from 4 to 7 links and, more advantageously still , of five or six links, said cycle (s) comprising, optionally, at least one heteroatom, so as to form at least one heterocyclic ring, the latter being optionally substituted by one or several radicals, identical or different, and corresponding to the same definition as that given above for R 2 to R 7 ,
- - n and m take the values 0 to 4, independently of each other, and when n and / or m> 2, two of the radicals R : or R 3 can, possibly, combine to form at least one cycle aromatic,
- a link unit L is provided between two sets A and B constituted by aromatic or hetero-aromatic nuclei (A and B being identical or different),
- L is preferably connected to the 2,2 ′ positions of the cores A and B; said formula (I) being characterized in that L is chosen from the following group of radicals:
- R are identical or different and representing a linear or branched C, -C I2, cycloalkyl, C, -C, 2 aryl, aralkyl or an alkylaryl, these radicals R 8, R 9:
- the two aromatic rings A and / or B are phenyls linked to one another by the linking unit L, which is connected to their respective carbons in position 2 and 2 ' . This corresponds to the general formula (V
- R 2 to R 7 , n and m are as defined above.
- This new family of spiropyranes is characterized by the presence of two cycles, respectively pyrannic and carbonaceous, joined by spiro carbon.
- the selection of specific L-bonding units for these spiropyrans leads to very good compromises as regards the combination of photochromic properties and photochemical stability.
- these bridged spiropyrans have better colorability and their photocoloration band undergoes a bathochromic displacement, compared with the known analogous compounds.
- the products according to the invention have a photostaining and discoloration kinetics suitable for the intended applications.
- groups R to R 7 comprising and / or forming at least one reactive function of polymerization and / or crosslinking, preferably selected from the following list: alkenyl-advantageously vinyl-, methacryloyl, acryloyl, acryloxyalkyle, methacryloxyalkyle or epoxy.
- the photochromic compounds according to the invention can be designed as monomers, of different natures or not, capable of reacting with each other or with other comonomers, to form homopolymers and / or copolymers, carrying a photochromic functionality and having mechanical properties of macromolecules. It follows that one of the objects of the present invention is formed by these homopolymers or copolymers comprising (co) monomers, and / or by reticulates at least partially constituted by photochromic compounds (I), (F) according to the invention.
- the above compounds (I), (F) can be envisaged as crosslinking agents provided with reactive functions likely to allow bridging between polymer chains of photochromic nature or not.
- the reticulates, capable of being thus obtained, also constitute another object of the present invention.
- R 4 -R 5 ring is: either a phenyl, so that the compound obtained is a naphthospiropyran,
- heterocycle advantageously of the type of those comprising oxygen as heteroatom, the tetrahydrofuran rings, optionally condensed with a phenyl ring, being preferred.
- the preferred compound obtained is a heterobenzopyran.
- R 2 , R 3 correspond to hydrogen or to -OMe, - and at least two radicals R 4 and R 5 or R 6 and R 7 form a cycle chosen * from the following group:
- alkyl preferably, a linear or branched hydrocarbon group having from 1 to 10 carbon atoms, optionally unsaturated (alkenyl, alkynyl);
- cycloalkyl means a hydrocarbon, monocyclic or polycyclic group, preferably having from 3 to 10 carbon atoms,
- alkoxyl a group, of -O-alkyl type, preferably having from 1 to 10 carbon atoms, - by "aryl”, an aromatic hydrocarbon group comprising at least 5 carbon atoms,
- heteroaryl means an aromatic hydrocarbon group comprising at least 5 atoms and at least one of which is a heteroatom
- aralkyl means a group comprising at least one alkyl and at least one aryl as defined above,
- heteroatom the atoms different from C and H and preferably belonging to the following group: N, O, S, P, F, Cl, Br.
- the compounds according to the invention are colorless or slightly colored in the initial state (ie not exposed to activating radiation cause the opening of the pyran cycle) and quickly develop an intense coloration under UV light ( 365 nm) or under a solar type light source. Finally, they quickly regain their original color when the irradiation stops.
- the compounds of the invention can be obtained by condensation of an aromatic alcohol and a propargyl alcohol.
- Propargyl alcohol is obtained by reacting an acetylide with a ketone, a reaction which is followed by hydrolysis.
- This synthetic route for the preparation of pyrannic cycles is well known to those skilled in the art and it is described, by example, in US patent 5,238,981.
- the synthesis scheme for the compounds according to the invention is shown below.
- propargyl alcohol eg, either lithium acetylide (preferably in the form of a diamine complex) or sodium acetylide is used. (suspended in paraffin oil) in a suitable solvent, such as tetrahydrofuran, dioxane, toluene, dimethylsulfoxide, dimethylformamide or an ether.
- a suitable solvent such as tetrahydrofuran, dioxane, toluene, dimethylsulfoxide, dimethylformamide or an ether.
- the condensation of propargyl alcohol with aromatic alcohol is carried out in a solvent, such as tetrahydrofuran, dioxane, toluene, benzene or ethanol, in the presence of an acid catalyst, such as para acid. -toluene sulfonic, sulfuric acid, chloroacetic acid or even acid alumina
- a solvent such as tetrahydrofuran, dioxane, toluene, benzene or ethanol
- an acid catalyst such as para acid.
- -toluene sulfonic, sulfuric acid, chloroacetic acid or even acid alumina The stoichiometry of the reagents, the reaction temperature and its duration depend on the reactivity of the propargyl alcohol and the aromatic alcohol. These conditions are optimized for obtaining a good yield.
- the reaction time can vary from 1 hour to a few days and the temperature from 0 ° C to 100 ° C.
- the compounds according to the present invention can be used as photochromic material in solution, or on and / or in a polymer or mineral matrix
- a photochromic solution can be obtained by dissolving the compound in an organic solvent, such as toluene, dichloromethane, tetrahydrofuran or ethanol.
- the solutions obtained are, generally, colorless and transparent. When exposed to sunlight, they develop a strong coloration and return to the colorless state when they are placed in an area of least exposure to solar radiation or, in other words, when they are no longer subjected to UV. In general, very little product (on the order of 0.01 to 5%) is sufficient to obtain an intense coloration.
- the most common applications are those in which the photochromic is dispersed uniformly within or on the surface of a polymer, copolymer or mixture of polymers.
- the possible implementation methods are very varied. Among those known to those skilled in the art, there may be mentioned, for example, the diffusion in the (co) polymer, from a suspension or solution of the photochromic, in a silicone oil, in an aliphatic hydrocarbon or aromatic, in a glycol or in another polymer matrix. Diffusion is commonly carried out at a temperature of 50 to 200 ° C for a period of 15 minutes to a few hours, depending on the nature of the polymer matrix.
- Another implementation technique consists in mixing the photochromic in a formulation of polymerizable materials, in depositing this mixture on a surface or in a mold and then carrying out the polymerization.
- polycarbonate- polyurethane preferably polycarbonate- polyurethane, poly (metha) acrylate-polyurethane, polystyrene- poly (metha) acrylate or also polystyrene-polyacrylonitrile, advantageously a mixture of polyester and polycarbonate or poly (metha) acrylate.
- the amount of photochrome used depends on the degree of darkening desired. In general, an amount between 0.01 and 20% by weight relative to the total weight of the polymer matrix is used.
- the photochromic compounds according to the invention can be used alone or in admixture with other products to form a composition capable of being in solid or liquid form, for example in solution or in dispersion, as already mentioned above.
- These compositions, which constitute another object of the invention can therefore comprise the compounds (I), (F) of the invention and other complementary photochromic compounds making it possible to obtain dark gray or brown colorations desired by the public in applications, such as sunglasses.
- These complementary photochromic compounds have a - ⁇ - and a surface of absorbance in the visible such that, after association with the spiropyrans of the invention, one obtains an absorbance spectrum covering all visible and giving the desired color to the mixture of photochromes activated.
- the photochrome (s), which can be associated with the compounds of the invention, are, for example, those known to those skilled in the art and described in the literature, namely spirooxazines (JC CRANO et al - "Applied Photochromic Polymer Systems "- Ed Blackie & son Ltd - 1992, chapter 2), chromenes (US 3,567,605, EP 0 562 915), spiropyrans or naphthospiropyrans (US 5,238,981).
- compositions according to the invention can also comprise:
- the present invention also relates to ophthalmic articles, such as ophthalmic or solar eyewear articles, comprising at least one of said defined compounds. above and / or at least one (co) polymer formed, at least in part, of recurring units of type (I) or (F) and / or at least one composition comprising the compounds (I) and (F) according to l invention, as defined above, and / or at least one matrix, as defined above, in organic polymer material or in mineral material or in hybrid mineral-organic material.
- the articles more particularly targeted by the present invention are photochromic ophthalmic lenses, glazing [windows for buildings, for locomotion vehicles (motor vehicle)], optical devices, such as decorative articles, sun protection articles. ...
- a light brown solid is obtained after evaporation of the organic phase.
- the structure of the compound is confirmed by NMR spectroscopy. Yield: 8.3 g.
- the product from the previous step (5.2 g) and 2-naphthol (3.32 g) are dissolved in 50 ml of tetrahydrofuran.
- a catalytic amount of p-toluene sulfonic acid is added thereto and the mixture is kept at room temperature and under a nitrogen atmosphere for 16 h.
- the solution is then poured into 100 ml of water and 100 ml of diisopropyl ether.
- the organic phase is recovered, washed three times in 30 ml of an aqueous sodium hydroxide solution (1 N), then reduced to dryness.
- the product obtained (4.45 g) is recrystallized from a heptane-diisopropyl ether solvent mixture. Yield:
- EXAMPLE 2 SYNTHESEDOFOMOMPOSEB.
- the propargyl alcohol of the latter is obtained, as in Example 1, by reacting it with lithium acetylide in tetrahydrofuran at -10 ° C.
- Compound (C) is then obtained, analogously to that described in Example 1, from propargyl alcohol of spirocyclopentylanthrone and 2-naphthol.
- the product (C) is isolated in the form of a cream powder with a yield of 18% and its structure is confirmed by NMR spectroscopy EXAMPLE 4: SYNTHESIS OF COMPOUND D.
- Compound (D) is obtained, analogously to that described in Example 1, from propargyl alcohol of spirocyclopentylanthrone (Example 3) and 2-hydroxy, 6-methoxynaphthalene.
- the product (D) is isolated in the form of a slightly pink powder with a yield of 14% and its structure is confirmed by NMR spectroscopy.
- This compound is synthesized from 10,10-dibenzyllanthrone and 2-naphthol. The procedure is similar to that of Example 1. The product is isolated in the form of a cream powder and its structure is confirmed by NMR spectroscopy.
- This compound is synthesized from 5,12-naphthacenquinone and 2-naphthol
- the procedure is similar to that of Example 3 (selective reduction of 5, 12-naphtacenequinone with tin and hydrochloric acid, followed by reaction with diiodobutane).
- the product is isolated in the form of a cream powder and its structure is confirmed by NMR spectroscopy.
- This compound is synthesized from spirocyclopentylantrhone and 3-methyl-1-naphthol.
- the product is isolated in the form of a cream powder and its structure is confirmed by NMR spectroscopy.
- This compound is synthesized from spirocyclopentylanthrone and 2,7-dihydroxynaphthalene.
- the hydroxylated product is then left to react with methacryloyl chloride in toluene, in the presence of triethylamine.
- the product is isolated in the form of a cream powder and its structure is confirmed by NMR spectroscopy.
- EXAMPLE 12 INCORPORATION OF THE COMPOUNDS IN A POLYMETHACRYLATE.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Polymers & Plastics (AREA)
- Eyeglasses (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
- Pyrane Compounds (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9720304A GB2316943B (en) | 1995-03-24 | 1996-03-21 | Photochromic spiropyrans and compositions and articles containing same |
| US08/913,620 US6410754B1 (en) | 1995-03-24 | 1996-03-21 | Photochromic spiropyrans, and compositions and articles containing same |
| DE19681305T DE19681305T1 (de) | 1995-03-24 | 1996-03-21 | Photochrome Spiropyrane und Zusammensetzungen und Gegenstände, die diese Enthalten |
| AU51505/96A AU5150596A (en) | 1995-03-24 | 1996-03-21 | Photochromic spiropyrans, and compositions and articles cont aining same |
| JP8528990A JPH11503117A (ja) | 1995-03-24 | 1996-03-21 | 光互変性スピロピラン、並びにこれらを含有する組成物及び製品 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9503739A FR2732019B1 (fr) | 1995-03-24 | 1995-03-24 | Spiropyrannes photochromiques, compositions et articles les contenant |
| FR95/03739 | 1995-03-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1996030357A1 true WO1996030357A1 (fr) | 1996-10-03 |
Family
ID=9477570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR1996/000429 Ceased WO1996030357A1 (fr) | 1995-03-24 | 1996-03-21 | Spiropyrannes photochromiques, compositions et articles les contenant |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US6410754B1 (fr) |
| JP (1) | JPH11503117A (fr) |
| AR (1) | AR001377A1 (fr) |
| AU (1) | AU5150596A (fr) |
| CA (1) | CA2214848A1 (fr) |
| DE (1) | DE19681305T1 (fr) |
| FR (1) | FR2732019B1 (fr) |
| GB (1) | GB2316943B (fr) |
| WO (1) | WO1996030357A1 (fr) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0835870A1 (fr) * | 1995-06-14 | 1998-04-15 | Ppg Industries, Inc. | Composés naphthopyranne photochromiques |
| WO1999016765A1 (fr) * | 1997-10-01 | 1999-04-08 | Transitions Optical, Inc. | Fluoranthenopyranes |
| WO2001055269A1 (fr) * | 2000-01-26 | 2001-08-02 | Ppg Industries Ohio, Inc. | Revetements de polyurethanne photochromiques et articles comportant un tel revetement |
| EP1498447A1 (fr) * | 2003-07-17 | 2005-01-19 | The Pilot Ink Co., Ltd. | Matériau photochromique |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7425406B2 (en) | 2004-07-27 | 2008-09-16 | Fujifilm Corporation | Lithographic printing plate precursor and lithographic printing method |
| EP2144916A4 (fr) * | 2007-04-10 | 2012-01-04 | Univ Pennsylvania | Dérivés phénylnaphtalènes et phénylquinolines et leur utilisation pour la liaison et la formation d'images de plaques d'amyloïde |
| WO2009121149A1 (fr) * | 2008-04-03 | 2009-10-08 | Advanced Polymerik Pty Ltd | Photochrome stabilisé |
| US8927193B2 (en) | 2010-03-19 | 2015-01-06 | Fujifilm Corporation | Coloring photosensitive composition, lithographic printing plate precursor and plate making method |
| LT6285B (lt) | 2014-12-09 | 2016-07-25 | Kauno technologijos universitetas | Nauji fotochrominiai junginiai ir tarpiniai junginiai jiems gauti |
| KR102038583B1 (ko) | 2016-11-16 | 2019-10-31 | 한국과학기술연구원 | 스파이로파이란 센서분자를 포함하는 복합소재 및 이를 이용한 변형 분석방법 |
| US11949124B2 (en) * | 2018-01-22 | 2024-04-02 | Celgard, Llc | Coated separators, lithium batteries, and related methods |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0625518A1 (fr) * | 1993-05-18 | 1994-11-23 | Ministero Dell' Universita' E Della Ricerca Scientifica E Tecnologica | Spiro-pyranes dotés de propriétés photochromiques |
| WO1995000504A1 (fr) * | 1993-06-28 | 1995-01-05 | Optische Werke G. Rodenstock | Composes de spiropyranne photochromiques |
| WO1995005382A1 (fr) * | 1993-08-13 | 1995-02-23 | Pilkington Plc | Heterocyclochromenes photochromiques |
| US5395567A (en) * | 1994-04-18 | 1995-03-07 | Ppg Industries, Inc. | Photochromic spironaphthopyran compounds |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0401958B1 (fr) | 1989-06-05 | 1995-01-11 | Tokuyama Corporation | Composés photochromiques, leur composition et usage |
| US5066818A (en) | 1990-03-07 | 1991-11-19 | Ppg Industries, Inc. | Photochromic naphthopyran compounds |
| FR2688782A1 (fr) | 1992-03-19 | 1993-09-24 | Essilor Int | Nouveaux chromenes heterocycliques et leur utilisation dans le domaine de l'optique ophtalmique. |
| KR960701639A (ko) * | 1993-08-25 | 1996-03-28 | 오오쓰까 요시미쓰 | 심기능 회복제(heart function restorative) |
-
1995
- 1995-03-24 FR FR9503739A patent/FR2732019B1/fr not_active Expired - Fee Related
-
1996
- 1996-03-21 US US08/913,620 patent/US6410754B1/en not_active Expired - Fee Related
- 1996-03-21 JP JP8528990A patent/JPH11503117A/ja not_active Withdrawn
- 1996-03-21 DE DE19681305T patent/DE19681305T1/de not_active Withdrawn
- 1996-03-21 WO PCT/FR1996/000429 patent/WO1996030357A1/fr not_active Ceased
- 1996-03-21 CA CA002214848A patent/CA2214848A1/fr not_active Abandoned
- 1996-03-21 AU AU51505/96A patent/AU5150596A/en not_active Abandoned
- 1996-03-21 AR AR33583496A patent/AR001377A1/es not_active Application Discontinuation
- 1996-03-21 GB GB9720304A patent/GB2316943B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0625518A1 (fr) * | 1993-05-18 | 1994-11-23 | Ministero Dell' Universita' E Della Ricerca Scientifica E Tecnologica | Spiro-pyranes dotés de propriétés photochromiques |
| WO1995000504A1 (fr) * | 1993-06-28 | 1995-01-05 | Optische Werke G. Rodenstock | Composes de spiropyranne photochromiques |
| WO1995005382A1 (fr) * | 1993-08-13 | 1995-02-23 | Pilkington Plc | Heterocyclochromenes photochromiques |
| US5395567A (en) * | 1994-04-18 | 1995-03-07 | Ppg Industries, Inc. | Photochromic spironaphthopyran compounds |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0835870A1 (fr) * | 1995-06-14 | 1998-04-15 | Ppg Industries, Inc. | Composés naphthopyranne photochromiques |
| WO1999016765A1 (fr) * | 1997-10-01 | 1999-04-08 | Transitions Optical, Inc. | Fluoranthenopyranes |
| WO2001055269A1 (fr) * | 2000-01-26 | 2001-08-02 | Ppg Industries Ohio, Inc. | Revetements de polyurethanne photochromiques et articles comportant un tel revetement |
| EP1498447A1 (fr) * | 2003-07-17 | 2005-01-19 | The Pilot Ink Co., Ltd. | Matériau photochromique |
| US7351362B2 (en) | 2003-07-17 | 2008-04-01 | The Pilot Ink Co., Ltd. | Photochromic material |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2732019A1 (fr) | 1996-09-27 |
| FR2732019B1 (fr) | 1997-06-13 |
| AR001377A1 (es) | 1997-10-22 |
| GB9720304D0 (en) | 1997-11-26 |
| DE19681305T1 (de) | 1998-03-19 |
| JPH11503117A (ja) | 1999-03-23 |
| GB2316943A (en) | 1998-03-11 |
| US6410754B1 (en) | 2002-06-25 |
| CA2214848A1 (fr) | 1996-10-03 |
| AU5150596A (en) | 1996-10-16 |
| GB2316943B (en) | 1999-01-06 |
| US20020049341A1 (en) | 2002-04-25 |
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