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    2.
    发明专利
    未知

    公开(公告)号：FR2874007B1

    公开(公告)日：2007-11-23

    申请号：FR0451767

    申请日：2004-08-03

    Applicant: ESSILOR INT

    Inventor： MATHERON MURIEL ,  BITEAU JOHN ,  CANO JEAN PAUL ,  BOILOT JEAN PIERRE ,  GACOIN THIERRY

    IPC: C03C17/32 ,  C09D183/02 ,  C09D183/04 ,  G02B1/04 ,  G02B1/10 ,  G02B3/00 ,  G02C7/02

    Abstract: The invention relates to a method of producing a substrate which is coated with a mesoporous layer and to the use thereof in ophthalmic optics. The inventive method comprises the following steps comprising: preparing a precursor sol containing (i) a precursor agent that is selected from compounds having formula M(X)4 (I), in which X is a hydrolysable group and M represents silicon or a tetravalent metal and mixtures thereof, (ii) at least one organic solvent, (iii) at least one pore-forming agent and (iv) water; depositing a film of the precursor sol on a main surface of the substrate; optionally consolidating the mesoporous structure of the deposited film; eliminating the pore-forming agent; and recovering the substrate coated with the mesoporous layer. The method is characterized in that: (i) the pore-forming agent is eliminated at a temperature of less than or equal to 150° C.; and (ii) the method comprises a step involving the introduction of at least one reactive agent bearing at least one hydrophobic group, before the deposition step and/or after said step.

    4.
    发明专利
    未知

    公开(公告)号：FR2787100B1

    公开(公告)日：2001-03-09

    申请号：FR9815825

    申请日：1998-12-15

    Applicant: ESSILOR INT

    Inventor： BITEAU JOHN ,  BOILOT JEAN PIERRE ,  CHAPUT FREDERIC

    IPC: C01B33/16 ,  C03C1/00 ,  C01B33/145

    Abstract: The method consists in hydrolysing an initial volume Vse of a precursor material comprising at least one polyalkoxysilane with a quantity of water such that x ⁢ ⁢ H 2 ⁢ O x ⁢ ⁢ Si >= 10 , ⁢ and where x H 2 0 and x Si represent the number of moles of H 2 0 and Si present, respectively, the concentration of the hydrolysate up to a volume substantially equal to the initial volume Vsi, leaving the concentrated hydrolysate until segregation into an aqueous phase and an organo-silicon phase, and recovery of the organo-silicon phase. A product can be obtained which comprises an organo-silicon sol comprising silicon species T 1 , T 2 , and T 3 , wherein the molar fraction of species T 2 is equal or greater than 50%, comprising a condensation rate equal to or greater than 0.65, and further defined as lacking water, as determined by analyzing a sample of said organo-silicon sol by 1 H NMR and observing the absence of peak corresponding to water.

    5.
    发明专利
    未知

    公开(公告)号：FR2896887B1

    公开(公告)日：2008-05-30

    申请号：FR0650381

    申请日：2006-02-02

    Applicant: ESSILOR INT

    Inventor： BITEAU JOHN ,  BOILOT JEAN PIERRE ,  CADO HERVE

    IPC: G02B6/13

    Abstract: The present invention relates to an article comprising a substrate having a main surface coated with a coating, part of which at least is mesoporous and has a refractive index profile with optical function, whose variation is imposed by the mesopore content and/or the filling ratio of the mesopores. The profile may be such that the refractive index varies depending on the distance to a given axis, or such that the refractive index variation is monotone, decreasing along any axis which is perpendicular to the surface of the substrate underlying the mesoporous part of said coating and oriented away from the substrate. The present invention also relates to methods for making said article, which differ depending on the technique from which the refractive index profile is created. The invention is applicable to ophthalmic optics.

    7.
    发明专利
    未知

    公开(公告)号：FR2858691B1

    公开(公告)日：2005-11-11

    申请号：FR0350397

    申请日：2003-08-05

    Applicant: ESSILOR INT

    Inventor： DOUCE JEROME ,  CHAPUT FREDERIC ,  BITEAU JOHN ,  BOILOT JEAN PIERRE ,  HOCHSTETTER GILLES

    IPC: C08J7/04 ,  C09D7/12 ,  C09D183/04 ,  G02B1/10 ,  C08L83/10 ,  C08J5/12 ,  C01F7/04

    Abstract: A polymerizable anti-scratch coating composition comprising at least one alkoxysilane and/or a hydrolyzate of it, anisotropic particles of one or more metal oxides and/or oxyhydroxides with a principal axis D1 of length 400 nm or less and, transversely to it, a minimum dimension D2 and a maximum D3 such that D3 is greater than or equal to D2, D1/D2 = 11or more and D1/D3 = 10 or more and optionally a polymerization catalyst. Independent claims are included for (1) a substrate coated by deposition and hardening of the claimed composition; (2) the particles as defined in the main and dependent claims.

    ARTICLE COMPORTANT UN REVETEMENT MESOPOREUX PRESENTANT UN PROFIL D'INDICE DE REFRACTION ET SES PROCEDES DE FABRICATION
    8.
    发明专利
    ARTICLE COMPORTANT UN REVETEMENT MESOPOREUX PRESENTANT UN PROFIL D'INDICE DE REFRACTION ET SES PROCEDES DE FABRICATION 未知

    公开(公告)号：FR2896887A1

    公开(公告)日：2007-08-03

    申请号：FR0650381

    申请日：2006-02-02

    Applicant: ESSILOR INT

    Inventor： BITEAU JOHN ,  BOILOT JEAN PIERRE ,  CADO HERVE

    IPC: G02B6/13

    Abstract: La présente invention a pour objet un article comprenant un substrat ayant une surface principale revêtue d'un revêtement dont au moins une partie est mésoporeuse et présente un profil d'indice de réfraction à fonction optique, dont la variation est imposée par la teneur en mésopores et/ou le taux de remplissage des mésopores.Le profil peut être tel que l'indice de réfraction varie selon la distance à un axe donné, ou tel que la variation d'indice de réfraction est monotone décroissante suivant tout axe perpendiculaire à la surface du substrat sous-jacente à la partie mésoporeuse dudit revêtement et orienté dans le sens de l'éloignement du substrat.La présente invention a également pour objets des procédés de fabrication de l'article ci-dessus, qui diffèrent selon la technique à partir de laquelle est crée le profil d'indice de réfraction.Application à l'optique ophtalmique.

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