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    31.
    发明专利
    未知

    公开(公告)号：DE60215970T2

    公开(公告)日：2007-07-26

    申请号：DE60215970

    申请日：2002-11-04

    Applicant: ESSILOR INT

    Inventor： KEITA GABRIEL ,  OBORDO OLIVEROS ,  MCCLIMANS ANNE ,  TURSHANI YUSEF

    IPC: C08G18/10 ,  C08G18/72 ,  C08G18/38 ,  G02B1/04

    Abstract: A method of fast curing polythiourethane transparent casted substrate, usable for making optical articles such as ophthalmic lenses, which comprises the steps of: 1) Providing a first component A comprising a polythiourethane prepolymer having isocyanate or isothiocyanate end groups and a viscosity at 25° C. ranging from 0.02 to 0.4 Pa.s; 2) Providing a second component B comprising a polythiourethane prepolymer having thiol (SH) end groups and a viscosity at 25° C. ranging from 0.2 to 2.0 Pa.s; 3) Mixing together first and second components A and B and filling a moulding cavity of a casting mould assembly with the resulting mixture; 4) Curing said mixture to obtain a transparent solid substrate, said curing step comprising: a) a first step for polymerizing said mixture to obtain a gel within 1 to 10 minutes; and b) a second step of post-curing the gel to obtain the transparent solid substrate; and 5) Recovering the transparent solid substrate from the mould.

    32.
    发明专利
    未知

    公开(公告)号：DE60207464T2

    公开(公告)日：2006-08-03

    申请号：DE60207464

    申请日：2002-03-20

    Applicant: ESSILOR INT

    Inventor： KEITA GABRIEL ,  TURSHANI YASSIN YUSEF

    IPC: B29D11/00 ,  G02B3/00 ,  B29C33/00 ,  B29C37/04 ,  B29C39/02 ,  B29C39/24 ,  B29L11/00

    Abstract: The method for making an optical lens which comprises : filling a molding cavity vertically oriented and defined by two mold pieces at the periphery of which is disposed an annular closure member with a polymerizable synthetic composition through a disposable check valve provided in the closure member ; polymerizing the composition to form the lens ; and recovering the lens with the disposable check valve emprisonned within the polymerized composition at the periphery thereof.

    36.
    发明专利
    未知

    公开(公告)号：ES2106991T3

    公开(公告)日：1997-11-16

    申请号：ES93403125

    申请日：1993-12-21

    Applicant: ESSILOR INT

    Inventor： KEITA GABRIEL ,  RENAUDINEAU JOEL

    IPC: G02C7/02 ,  B29C39/00 ,  B29D11/00 ,  B29K33/00 ,  B29L11/00 ,  C08F20/26 ,  C08F20/38 ,  C08F220/10 ,  C08F220/28 ,  C08F220/30 ,  C08F290/00 ,  C08F290/06 ,  G02B1/04

    Abstract: Polymer composition resulting from the polymerisation of a polymerisable composition comprising: - at least 50 % by weight of a monomer or of a mixture of monomers corresponding to the formula I in which R1 and R2, which are identical or different, denote hydrogen or C1-C6 alkyl; X denotes m + n is between 0 and 10 - 0 to 50 % by weight of one or a number of mono- or polyfunctional methacrylic, acrylic or vinyl comonomers (II) - from 0.5 to 15 % with respect to the weight of the components I + II of a compound of formula (III) in which R3 and R4 denote hydrogen or else one of the radicals R3 or R4 is a hydrogen atom whereas the other forms a ring with R7 and R5, R6 and R7 are hydrogen or alkyl which can be substituted by OH and/or interrupted.

    39.
    发明专利
    未知

    公开(公告)号：BR9305174A

    公开(公告)日：1994-07-26

    申请号：BR9305174

    申请日：1993-12-21

    Applicant: ESSILOR INT

    Inventor： KEITA GABRIEL ,  RENAUDINEAU JOEL

    IPC: G02C7/02 ,  B29C39/00 ,  B29D11/00 ,  B29K33/00 ,  B29L11/00 ,  C08F20/26 ,  C08F20/38 ,  C08F220/10 ,  C08F220/28 ,  C08F220/30 ,  C08F290/00 ,  C08F290/06 ,  G02B1/04 ,  C08F220/20

    Abstract: Polymer composition resulting from the polymerisation of a polymerisable composition comprising: - at least 50 % by weight of a monomer or of a mixture of monomers corresponding to the formula I in which R1 and R2, which are identical or different, denote hydrogen or C1-C6 alkyl; X denotes m + n is between 0 and 10 - 0 to 50 % by weight of one or a number of mono- or polyfunctional methacrylic, acrylic or vinyl comonomers (II) - from 0.5 to 15 % with respect to the weight of the components I + II of a compound of formula (III) in which R3 and R4 denote hydrogen or else one of the radicals R3 or R4 is a hydrogen atom whereas the other forms a ring with R7 and R5, R6 and R7 are hydrogen or alkyl which can be substituted by OH and/or interrupted.

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