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    12.
    发明专利
    未知

    公开(公告)号：DE69313997T2

    公开(公告)日：1998-02-19

    申请号：DE69313997

    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.

    14.
    发明专利
    未知

    公开(公告)号：FR2703056B1

    公开(公告)日：1995-06-02

    申请号：FR9303537

    申请日：1993-03-26

    Applicant: ESSILOR INT

    Inventor： GARCIA RUBEN ,  KEITA GABRIEL ,  YEAN LEANIRITH

    IPC: C08F18/24 ,  C08F216/02 ,  C08F218/00 ,  G02B1/04 ,  C08F222/16 ,  B29D11/00

    Abstract: Polymer composition obtained by polymérization of a polymerizable composition comprising: at least 50 % by weight of a monomer or a mixture of monomers of formula (I) wherein X is formula (II) and R and R' are H or CH3; 0-50 % by weight of one or more allylic, vinyl, acrylic or methacrylic mono or poly functional comonomer(s) (II): 0.2-10 % based on the weight of components (I) + (II), of a compound of formula (III) wherein R4 and R5 are hydrogen or a radical, R4 or R5 is a hydrogen atom, while the other forms a C5 or C7-C10 ring with R2; R1, R2 and R3 are hydrogen, alkyl which can be substituted by OH and/or interruped by an ether, ester or ketone function.

    Method for making transparent polythiourethane substrates in particular optical substrates
    17.
    发明专利
    Method for making transparent polythiourethane substrates in particular optical substrates 未知

    公开(公告)号：AU2002351825B2

    公开(公告)日：2008-02-14

    申请号：AU2002351825

    申请日：2002-11-04

    Applicant: ESSILOR INT

    Inventor： KEITA GABRIEL ,  TURSHANI YASSIN YUSEF ,  MCCLIMANS PAMELA ANNE ,  OBORDO JOEY OLIVEROS

    IPC: C08G18/72 ,  C08G18/10 ,  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.

    18.
    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.

    19.
    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.

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