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    POLYSILOXANE VINYLIC CROSSLINKERS WITH HIGH REFRACTIVE INDEX
    33.
    发明申请
    POLYSILOXANE VINYLIC CROSSLINKERS WITH HIGH REFRACTIVE INDEX 有权

    公开(公告)号：US20220306810A1

    公开(公告)日：2022-09-29

    申请号：US17700734

    申请日：2022-03-22

    Applicant: Alcon Inc.

    Inventor： Frank Chang ,  Thomas M. Moy ,  Adam K. Sniady

    IPC: C08G77/442 ,  C08G77/20 ,  C08G77/60 ,  G02B1/04

    Abstract: The invention provides a class of high RI polysiloxane vinylic crosslinkers. Each of the polysiloxane vinylic crosslinkers of the invention comprise (1) a polysiloxane segment comprising dimethylsiloxane units and aryl-containing siloxane units each having one methyl substituent and one organic substituent having up to 45 carbon atoms and at least one aryl moiety which is linked to Si atom through a linker having at least 2 (preferably 3) carbon atoms; (2) ethylenically-unsaturated groups. The invention also provides an insert or silicone hydrogel contact lens which comprises a crosslinked polymeric material comprising repeating units of at least one of such a class of high RI polysiloxane vinylic crosslinkers.

    Hydrophilized polydiorganosiloxane vinylic crosslinkers and uses thereof
    34.
    发明授权
    Hydrophilized polydiorganosiloxane vinylic crosslinkers and uses thereof 有权

    公开(公告)号：US11453736B2

    公开(公告)日：2022-09-27

    申请号：US17038349

    申请日：2020-09-30

    Applicant: Alcon Inc.

    Inventor： Jinyu Huang ,  Frank Chang ,  Steve Yun Zhang ,  Feng Jing

    IPC: C08L101/14 ,  C08L83/04 ,  C08F290/06 ,  G02B1/04 ,  C08G77/20 ,  C08G77/16 ,  C08G77/392 ,  C08G77/12

    Abstract: The invention provides a hydrophilized polydiorganosiloxane vinylic crosslinker which comprises (1) a polydiorganosiloxane polymer chain comprising dimethylsiloxane units and hydrophilized siloxane units each having one methyl substituent and one monovalent C4-C40 organic radical substituent having two to six hydroxyl groups, wherein the molar ratio of the hydrophilized siloxane units to the dimethylsiloxane units is from about 0.035 to about 0.15, and (2) two terminal (meth)acryloyl groups. The hydrophilized polydiorganosiloxane vinylic crosslinker has a number average molecular weight of from about 3000 Daltons to about 80,000 Daltons. The present invention is also related to a silicone hydrogel contact lens, which comprises repeating units derived from a hydrophilized polydiorganosiloxane vinylic crosslinker of the invention.

    METHOD FOR MAKING PHOTOFUNCTIONAL CONTACT LENSES
    35.
    发明申请
    METHOD FOR MAKING PHOTOFUNCTIONAL CONTACT LENSES 有权

    公开(公告)号：US20220281193A1

    公开(公告)日：2022-09-08

    申请号：US17688022

    申请日：2022-03-07

    Applicant: Alcon Inc.

    Inventor： Houliang Tang ,  Frank Chang

    IPC: B29D11/00 ,  C08L83/04 ,  G02C7/04 ,  G02C7/10

    Abstract: Described herein is a method for producing a contact lens comprising a central zone that has a diameter of about 13 mm or less, is concentric with the central axis of the contact lens, and possesses at least one photo functionality. The method comprises: applying a first polymerizable fluid composition containing at least one photochemically functional compound on a central portion of the molding surface of a female mold half to form a circular layer; partially curing, in situ, the circular layer in the female mold half; dispensing a second polymerizable fluid composition over the partially-cured circular layer on the molding surface of the female mold half; and a step of curing the second polymerizable fluid composition and the partially-cured circular layer immersed therein in the mold cavity formed between the the molding surfaces of the female mold half and a male mold half.

    METHOD FOR MAKING PHOTOCHROMIC CONTACT LENSES
    38.
    发明申请
    METHOD FOR MAKING PHOTOCHROMIC CONTACT LENSES 有权

    公开(公告)号：US20210371731A1

    公开(公告)日：2021-12-02

    申请号：US17335628

    申请日：2021-06-01

    Applicant: Alcon Inc.

    Inventor： Feng Jing ,  Frank Chang ,  Houliang Tang

    IPC: C09K9/02 ,  C08F230/08 ,  B29D11/00

    Abstract: Described herein is a cost-effective and time-efficient method for producing photochromic contact lenses, in particular, preferably photochromic silicone hydrogel contact lenses, from a polymerizable composition comprising an unique selection and combination of main polymerizable components, a photochromic compound and a visible-light photoinitiator, based on the Lightstream Technology™. This invention also provides photochromic contact lenses or more preferably photochromic silicone hydrogel contact lenses made according to a method of the invention. A photochromic contact lens of the invention is capable of undergoing a reversible color change upon exposure to UV-irradiation or high-energy-violet light (HEVL) (with wavelengths from 380 nm to 440 nm).

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