COATING COMPOSITION FOR AN OPTICAL ARTICLE, COMPRISING A COLLOIDAL SUSPENSION OF ZIRCONIA PARTICLES

    公开(公告)号:CA2858283A1

    公开(公告)日:2013-07-04

    申请号:CA2858283

    申请日:2012-12-27

    Applicant: ESSILOR INT

    Abstract: The present invention pertains to a coating composition comprising a colloidal suspension of specific zirconia nano-particles, at least one epoxysilane and at least one catalyst. It also pertains to a method for preparing this composition, and to its use for coating a transparent optical substrate. This invention is also directed to an optical article, such as an ophthalmic lens, comprising a transparent polymer substrate, especially an acrylic substrate, and a coating prepared from the aforesaid composition, which is directly applied on said substrate.

    53.
    发明专利
    未知

    公开(公告)号:AT405531T

    公开(公告)日:2008-09-15

    申请号:AT02700408

    申请日:2002-01-24

    Applicant: ESSILOR INT

    Abstract: The present invention relates to methods of incorporating additives into a thin film formed on a substrate comprising: forming an impregnatable thin film on at least one face of a substrate; depositing an impregnation composition comprising at least one additive incorporated in an appropriate diluent medium on said impregnatable thin film by spin coating; diffusing the impregnation composition within said impregnatable thin film and; treating the substrate coated with the impregnated thin film to at least partially remove the diluent medium from the impregnated thin film. The invention also relates to the application of such methods to the production of optical lenses, including in the colouring of such lenses.

    54.
    发明专利
    未知

    公开(公告)号:ES2109623T3

    公开(公告)日:1998-01-16

    申请号:ES94400476

    申请日:1994-03-07

    Applicant: ESSILOR INT

    Abstract: Curable composition for antiabrasion coating, including the constituents A - a hydrolysate of an epoxytrialkoxysilane, B - a hydrolysate of a silane of formula (I) in which each of T and T produces an OH group by hydrolytic treatment and Z and Z are unreactive organic groups, C - colloidal silica, D - a specific aluminium catalyst, E - optionally, an organic solvent whose boiling point is between 70@C and 140@C, and the corresponding coated articles, optionally treated against reflections.

    58.
    发明专利
    未知

    公开(公告)号:FR2721720B1

    公开(公告)日:1996-09-06

    申请号:FR9407877

    申请日:1994-06-27

    Applicant: ESSILOR INT

    Abstract: PCT No. PCT/FR95/00812 Sec. 371 Date May 7, 1997 Sec. 102(e) Date May 7, 1997 PCT Filed Jun. 20, 1995 PCT Pub. No. WO96/00403 PCT Pub. Date Jan. 4, 1996An ophthalmic lens consisting of a substrate made of organic glass, of an abrasion-resistant coating, of a layer of impact-resistant primer and of an inorganic antireflective coating, wherein the surface of the said substrate is covered with the abrasion-resistant coating and in that the impact-resistant primer layer is inserted between the said abrasion-resistant layer and the anti-reflective coating, wherein the abrasion-resistant coating comprises a hydrolyzate or a mixture of hydrolyzates of a silane compound of formula: in which: R1 denotes an organic group containing an epoxy group; R2 is a hydrocarbon radical which has 1 or 2 carbon atoms; and R3 is a hydrocarbon group which has from 1 to 4 carbon atoms, and a is 0 or 1 in value.

    60.
    发明专利
    未知

    公开(公告)号:FR2702486B1

    公开(公告)日:1995-04-21

    申请号:FR9302649

    申请日:1993-03-08

    Applicant: ESSILOR INT

    Abstract: Curable composition for antiabrasion coating, including the constituents A - a hydrolysate of an epoxytrialkoxysilane, B - a hydrolysate of a silane of formula (I) in which each of T and T produces an OH group by hydrolytic treatment and Z and Z are unreactive organic groups, C - colloidal silica, D - a specific aluminium catalyst, E - optionally, an organic solvent whose boiling point is between 70@C and 140@C, and the corresponding coated articles, optionally treated against reflections.

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