Essilor International (Compagnie Generale D'optique)

Essilor International (Compagnie General D'optique)

Other

University of Georgia Research Foundation Inc

Essilor International

Steven Weber

Peiqi Jiang

Fadi O. Adileh

Yassin Yusef Turshani

Gabriel Keita

Sirisoma Wanigatunga

Fadi O Adileh

Aref Jallouli

Joey Oliveros Obordo

Aref Ben Ahmed Jallouli

Martin Rickwood

Steve Weber

Charles R Kutal

Joseph Boryslawski

Pamela Anne McClimans

Ronald A Berzon

Karl Arthur Klemm

Sidney Shaw White, Jr

Hoa Thien Dang

Sheila M Tatman

Gilles Richard

Daniel Darmes

Pamela Ann McClimans

Richard William Neuzil, Jr

An inflatable membrane apparatus () comprising (a) a fluid accumulator () having an upper and a lower face and a fluid entrance (), said lower face being partly formed by an inflatable membrane (), and (b) a trunconical part () projecting outwardly from the lower face of the accumulator whose greater base is closed by at least part of the inflatable membrane () and smaller base forms a circular opening, whereby, when pressurized fluid is introduced into the accumulator (), deformation of the inflatable membrane () is guided by the trunconical part.

Inflatable membrane apparatus and process for transferring a coating onto a surface of a lens blank

A transparent, non elastomeric, high refractive index, impact resistant poly(thio)urethane/urea material comprising the reaction product of: a) at least one (&#x3b1;, &#x3c9;)-diiso(thio)cyanate cycloaliphatic or aromatic polysulfide prepolymer, and b) at least one aromatic primary diamine, in an equivalent molar ratio amine function/iso(thio)cyanate function ranging from 0.5 to 2, wherein, said prepolymer and diamine are free from disulfide (&#x2014;S&#x2014;S&#x2014;) linkage and wherein the (&#x3b1;, &#x3c9;)-diiso(thio)cyanate polysulfide prepolymer is the reaction product of at least one cycloaliphatic or aromatic diiso(thio)cyanate and at least one (&#x3b1;, &#x3c9;)-diol prepolymer.

High index and high impact resistant poly(thio)urethane/urea material, method of manufacturing same and its use in the optical field

The invention concerns a photocurable adhesive composition comprising, based on total weight of photopolymerizable monomers and/or oligomers of the composition: 5 to 60 wt % of at least one mono or polyacrylate monomer or oligomer thereof (A); 5 to 50 wt % of at least one thio(meth)acrylate monomer or oligomer thereof (B); and 20 to 50 wt % of at least one aromatic dimethacrylate monomer or oligomer thereof (C); with the proviso that the composition does not contain a brominated monofunctional acrylate.

Photocurable adhesive composition and its use in the optical field

A transparent, non elastomeric, high index, impact resistant polythiourethane/urea material comprising the reaction product of:

High index and high impact resistant polythiourethane/urea material, method of manufacturing same and its use in the optical field

A process for transferring a coating onto at least one optical surface of a lens blank which comprises:

Process for transferring a coating onto a surface of a lens blank

Disclosed is a thiosphosphine compound of formula: wherein X represents with Rbeing H or &#x2014;CH, R and R' represent, independently from each other, an alkyl radical, an alkoxy radical, an aryl radical or a phenyl radical which may be substituted with one or more alkyl and/or alkoxy groups, n is an integer from 0 to 4, n&#x2032; is an integer from 0 to 5, x is an integer from 0 to 2, y is an integer from 1 to 5 with the proviso that y+n is an integer from 1 to 5. The compounds can be used to make optically transparent articles such as ophthalmic lenses.

Thiophosphine compounds

Disclosed is a process for making a thiophosphine compound of formula (I): wherein X represents SH or with Rbeing H or &#x2014;CH, R and R' represent, independently from each other, an alkyl radical, an alkoxy radical, an aryl radical or a phenyl radical which may be substituted with one or more alkyl and/or alkoxy groups, n is an integer from 0 to 4, n&#x2032; is an integer from 0 to 5, x is an integer from 0 to 2, y is an integer from 1 to 5 with the proviso that y+n is an integer from 1 to 5, wherein y =1, X is in para position with regard to phosphorus and represents SH.

Process for making thiophosphine compounds

The invention relates to a process for polymerising a monomer, polymerizing and/or crosslinking an oligomer, or crosslinking a polymer or copolymer, said monomer, oligomer, polymer and copolymer being selected among precursor monomers, urethane, thiourethane and episulfide oligomers, and urethane, thiourethane and episulfide polymers and copolymers, which comprises:

Anionic and Lewis base photopolymerization process and its use for making optical articles

Thiophosphine compounds (also named phosphine sulfide compounds) and their use for making polymerizable compositions which after polymerization give optically transparent articles, such as ophthalmic lenses, having improved mechanical and optical properties and in particular having an improved UV cut.

Thiophosphine compounds and methods of making polymerizable compositions containing them and their use for making ophthalmic lenses

The present invention relates to an improved process or method for transferring a coating onto at least one surface of a lens blank which can be implemented in a short period of time without any risk of deformation of the lens blank.

Apparatus and process for transferring a coating onto a surface of a lens blank

The invention relates to a process for polymerising a monomer, polymerizing and/or crosslinking a oligomer, or crosslinking a polymer or copolymer, said monomer, oligomer, polymer and copolymer being selected among precursor monomers, urethane, thiourethane and episulfide oligomers, and urethane, thiourethane and episulfide polymers and copolymers, which comprises:

The present invention relates to room temperature or thermally polymerizable/curable episulfide based compositions for making polymerized/cured episulfide based resins, and in particular episulfide based compositions which can be fastly polymerized/cured, as well as to a room temperature or thermal polymerization process for making such episulfide based resins.

Fast polymerizable/curable episulfide based composition, polymerization/curing process and optical articles resulting therefrom

The invention relates to a method for forming from a mold optical articles. These methods are particularly useful in preparing ophthalmic articles such as ophthalmic lenses, having several optical coatings thereon. The invention also relates to ophthalmic articles produced by these methods.

Method for forming on-site a coated optical article

A method of fast curing polythiourethane transparent casted substrate, usable for making optical articles such as ophthalmic lenses, which comprises the steps of:

Method for making transparent polythiourethane substrates in particular optical substrates

The polymerizable compositions comprise: Application to the fabrication of optical articles, such as lenses.

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Largo, FL, United States of America

Yassin Yusef Turshani