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    41.
    发明专利
    未知

    公开(公告)号：FR2797264B1

    公开(公告)日：2004-06-18

    申请号：FR9910031

    申请日：1999-08-02

    Applicant: ESSILOR INT

    Inventor： RICHARD GILLES ,  PRIMEL ODILE ,  YEAN LEANIRITH

    IPC: G02C7/02 ,  C08F220/30 ,  C08F222/10 ,  C08F290/06 ,  G02B1/04 ,  C08F220/26

    Abstract: Polymerizable compositions for making transparent polymeric substrates, resulting transparent polymeric substrates and the applications thereof in optics. The composition comprises: from 35 to 70 parts by weight of one or more monomers (I) of formula: wherein R 1 and R 2 represent H or CH 3 , A is a divalent moiety of formula: m1 and m2 each are an integer in the range of 4 to 20, from 5 to 50 parts by weight of a monomer (II) comprising at least a urethane unit and at least two (meth)acrylate functions, and from 5 to 40 parts by weight of a monomer (III) with a high Abbe number and comprising one or more methacrylate functions, the total of the monomers (I), (II) and (III) representing 100 parts by weight.

    42.
    发明专利
    未知

    公开(公告)号：FR2828743A1

    公开(公告)日：2003-02-21

    申请号：FR0110816

    申请日：2001-08-14

    Applicant: ESSILOR INT

    Inventor： PRIMEL ODILE ,  PILLIE MAXIME ,  DANTAS DE MORAIS TONY ,  YEAN LEANIRITH

    IPC: B29C39/10 ,  B29D11/00 ,  B29L11/00 ,  G02B3/00 ,  G02B27/01 ,  G02B27/10 ,  G02B27/02 ,  G02C7/02

    Abstract: A lens has at least one insert (16, 28), which defines an optical path. For manufacturing the lens, the insert is first bonded to an overmould (36). A polymer (44) is then moulded in a mould (42, 36) formed on one of its faces from the overmould. After moulding, the overmould may be preserved and form part of the lens, if necessary after surface grinding. The overmould may also be separated from the lens; in this case, the lens is machined, removing at least part of the inserts. The lens obtained has an insert in a reproducible position, with an entrance or exit surface inducing no optical distortion.

    44.
    发明专利
    未知

    公开(公告)号：FR2799470B1

    公开(公告)日：2002-01-11

    申请号：FR9912459

    申请日：1999-10-06

    Applicant: ESSILOR INT

    Inventor： PRIMEL ODILE ,  PILLIE MAXIME ,  RICHARD GILLES ,  YEAN LEANIRITH

    IPC: C08F2/38 ,  C08F220/38 ,  C08F228/02 ,  G02B1/04

    Abstract: The compositions comprise:(a) at least 40 parts by weight, preferably at least 50 parts by weight, of at least one thio(meth)acrylate monomer,(b) at least one high Abbe number monomer,(c) at the most 20 parts by weight, preferably at the most 15 parts by weight and more preferably 10 parts by weight of an aromatic polyvinyl monomer, and(d) at least one polythiol, for 100 parts by weight of (a), (b), (c) and (d).Application for the manufacture of optical lenses.

    45.
    发明专利
    未知

    公开(公告)号：FR2799470A1

    公开(公告)日：2001-04-13

    申请号：FR9912459

    申请日：1999-10-06

    Applicant: ESSILOR INT

    Inventor： PRIMEL ODILE ,  PILLIE MAXIME ,  RICHARD GILLES ,  YEAN LEANIRITH

    IPC: C08F2/38 ,  C08F220/38 ,  C08F228/02 ,  G02B1/04

    Abstract: The invention concerns compositions comprising: (a) at least 40 parts by weight, preferably at least 50 parts by weight of at least a thio(meth)acrylate monomer; (b) at least a monomer with high Abbe coefficient; (c) not more than 20 parts by weight, preferably not more than 15 parts by weight, and advantageously not more than 10 parts by weight of an aromatic polyvinyl monomer; and (d) at least a polythiol; for 100 parts by weight of (a), (b), (c), and (d). The invention is useful for making optical lenses.

    47.
    发明专利
    未知

    公开(公告)号：FR2797265A1

    公开(公告)日：2001-02-09

    申请号：FR9910032

    申请日：1999-08-02

    Applicant: ESSILOR INT

    Inventor： RICHARD GILLES ,  PRIMEL ODILE ,  YEAN LEANIRITH

    IPC: G02C7/02 ,  C08F222/10 ,  C08F290/06 ,  G02B1/04 ,  C08F220/26

    Abstract: The invention is a composition comprising: 40 to 95 parts by weight of one or several monomers (I) of formula (a) wherein: R1 and R2 represent H or CH; A represents a divalent radical of formula (b) or (c) wherein m1 and m2 represent each an integer ranging between 2 and 6; and 5 to 50 parts by weight of a monomer (II) comprising at least a urethane unit and at least two (meth)acrylate functions. The invention is useful for making optical and ophthalmic articles.

    50.
    发明专利
    未知

    公开(公告)号：DE69203010D1

    公开(公告)日：1995-07-27

    申请号：DE69203010

    申请日：1992-03-05

    Applicant: ESSILOR INT

    Inventor： YEAN LEANIRITH ,  WAJS GEORGES ,  MARTIN GERARD ,  GUERRERO PATRICK

    IPC: C08L101/00 ,  B29D11/00 ,  G02B1/04 ,  G02B3/00 ,  G02C7/02

    Abstract: This procedure is of the kind in which the absorption, by a base-polymer material, of an additive composition enclosing at least one monomer capable of leading to a polymer of different refractive index is ensured. … According to the invention, by choosing a swelling composition as the additive composition, a first preform (P1) is produced, with a first geometry (G1), from a polymer material at a rate of advance sufficient for it to be self-supporting, a confinement volume (14) is defined between this first preform and an abutment element having a second geometry (G2) corresponding to a greater volume, and it is brought into contact there with a quantity of swelling additive composition sufficient for the swelling, to which it is then subjected, to cause it to match, under stress, this second geometry (G2). … Application, especially, to the production of ophthalmic lenses. … …

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