Essilor International (compagnie Generale D'optique)

Essilor International

Transitions Optical, Inc.

Gemplus

Essilor International (compagnie General D'optique)

Andre Samat

Robert Guglielmetti

Jean L Pozzo

Vladimir Lokshin

Pierre Lareginie

Karine Chamontin

Paul Morgavi

Christian Gustave Leriche

Corinne Moustrou

Isabelle Corniglion

Michel Frigoli

Robert Guguelmetti

Nicole Rebiere-Galy

Armand Gellis

Elena Zaballos Garcia

The photochromic compounds of the invention correspond to the formula:

Photochromic naphtho &lsqb;2,1-b&rsqb;pyran compounds containing bithienyl or terthienyl substituents, process for their manufacture, and photochromic materials and articles obtained

Homoazaadamantane spirooxazines and their use in the field of ophthalmic

Method for printing on a portable data medium, particularly a smart

The new photochromic compounds according to the invention, of the spiro[indoline-[2,3']-benzoxazine] type, include at least one electron-withdrawing group attached to the benzoxazine structure in 5' or 6' position by a chain containing at least one ethylenic double bond. Application to ophthalmic optics.

Photochromic spirooxazine compounds, their use in the field of

Photochromic compounds and methods for their use

The invention relates to photochromic compounds of general formula: ##STR1## wherein R.sup.a, R.sup.b and R.sup.c is denote hydrogen; alkyl; aryl; OR, SR, COR or COOR, in which R denotes hydrogen, alkyl or aryl, amino of formula NR.sub.1 R.sub.2 in which R.sub.1 and R.sub.2 denote hydrogen, alkyl, cycloalkyl or an aryl; a halogen atom; a mono- or polyhaloalkyl group; or an NO.sub.2, CN or SCN group; n and m denote integers from 1 to 5; p is equal to 1 or 2; and H is a 5-members aromatic heterocycle containing one or more heteroatoms selected from nitrogen, oxygen and sulfur, these heterocyclic nuclei being eventually substituted by one or more alkyl, alkoxy, amino, aryl or aralkyl groups or condensed with a phenyl nucleus, a substituted phenyl nucleus or a 6-members cycloaliphatic nucleus and to their use in ophtalmic optics.

Heterocyclic chromenes and their use in the field of ophthalmic optics

The invention relates to ophthalmic lenses comprising a transparent organic polymer material and photochromic compounds of general formula ##STR1## wherein R.sup.a, R.sup.b and R.sup.c are hydrogen; alkyl; aryl; OR, SR, COR or COOR, where R denotes hydrogen, alkyl or aryl, amino of formula NR.sub.1 R.sub.2 where R.sub.1 and R.sub.2 denote hydrogen, alkyl, cycloalkyl or an aryl; a halogen atom; a mono- or polyhaloalkyl group; or an NO.sub.2, CN or SCN group; n and m denote integers from 1 to 5; p is equal to 1 or 2; and H is an aromatic heterocycle having the general formula: ##STR2## wherein: X, Y and Z represent independently of each other, a CR.sub.8 radical or a nitrogen atom, and one or two of X, Y and Z is a nitrogen atom and R.sub.8 is selected from the group consisting of hydrogen, C.sub.1 -C.sub.6 alkyl and phenyl; and R.sub.4 is selected from the group consisting of hydrogen, C.sub.1 -C.sub.6 alkyl and phenyl.

Ophthalmic lenses with heterocyclic chromene compounds

The invention relates to photochromic compounds of general formula: ##STR1## in which: R.sup.a and R.sup.b denote hydrogen; alkyl; OR, SR, COR or COOR where R denotes hydrogen, alkyl, aryl or heteroaryl; a group NR.sub.1 R.sub.2 where R.sub.1 R.sub.2 denotes hydrogen, C.sub.4 -C.sub.7 alkyl or cycloalkyl, aryl, or form with the nitrogen a C.sub.4 -C.sub.7 heterocycle; NO.sub.2, CN, SCN or a halogen; a group SO.sub.3 R' where R' denotes hydrogen or an alkali metal; a mono- or polyhaloalkyl; m denotes an integer from 1 to 4 and n is equal to 1 or 2; Cy denotes an aromatic ring or an aromatic or non-aromatic heterocycle; R.sup.c denotes an alkyl, allyl, phenyl or arylalkyl group which is mono- or disubstituted with alkyl, alkoxy or NO.sub.2 ; an alicyclic, an aliphatic hydrocarbon containing one or more hetero atoms; R.sup.d, R.sup.e, R.sup.f and R.sup.g denote hydrogen, alkyl, alkoxy or thioalkyl or form in pairs a 4- to 7-membered cycloalkyl possibly containing hetero atoms which are optionally condensed with an aromatic ring; R.sup.h denotes hydrogen or forms with R.sup.d a 5- or 6-membered cycloalkyl; and the use thereof in ophthalmic optics.

Spirooxazines and use thereof in the field of ophthalmic optics

The invention relates to photochromic compounds of general formula: ##STR1## in which R.sup.a, R.sup.b and R.sup.c denote hydrogen; alkyl; aryl; OR, SR, COR or COOR, in which R denotes hydrogen, alkyl or aryl, amino of formula NR.sub.1 R.sub.2 in which R.sub.1 and R.sub.2 denote hydrogen, alkyl, cycloalkyl, aryl, R.sub.1 and R.sub.2 being capable of forming with the nitrogen atom, a heterocycle containing 4 to 7 members and capable of containing, in addition, one or more heteroatoms chosen from nitrogen, oxygen, sulfur, a halogen atom; a mono- or polyhaloalkyl group; an NO.sub.2, CN or SCN group; n and m denote integers from 1 to 5 depending on the number of substitutions on the nucleus and p may be equal to 1 or 2 depending on the number of substitutions on the nucleus; H is an aromatic heterocycle having 4 to 7 members containing one or more heteroatoms chosen from nitrogen, oxygen, sulfur, these heterocyclic nuclei being capable of being substituted by one or more alkyl, alkoxy, amino, aryl or aralkyl groups or condensed with an aromatic nucleus, and to their use in ophthalmic optics.

Heterocyclic chromenes

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Marseille, France

Andre Samat