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    METHOD FOR MAKING PHOTOCHROMIC CONTACT LENSES
    23.
    发明申请
    METHOD FOR MAKING PHOTOCHROMIC CONTACT LENSES 有权

    公开(公告)号：US20220126541A1

    公开(公告)日：2022-04-28

    申请号：US17512431

    申请日：2021-10-27

    Applicant: Alcon Inc.

    Inventor： Junhao Ge ,  Yuan Chang ,  Steve Yun Zhang ,  Michelle Plavnik ,  Augustine Twum Kumi ,  Daqing Wu

    IPC: B29D11/00 ,  G02C7/04 ,  G02C7/10 ,  C08F230/08

    Abstract: Described herein is a method for producing photochromic silicone hydrogel contact lenses in a relatively efficient and consistent manner from a polymerizable composition under a controlled thermal curing scheme. The main polymerizable components in the polymerizable composition are a high radical-reactive hydrophilic (meth)acrylamido monomer, a high radical-reactive siloxane-containing (meth)acrylamido monomer, and a polysiloxane vinylic crosslinker(s) free of low-reactive ethylenically unsaturated group as the main crosslinker. The thermal free radical initiator having a 10 hour half-life temperature (T10hλ) of from about 50° C. to about 90° C. The controlled thermal curing scheme includes maintaining a first curing temperature of from about (T10hλ−20)° C. to about T10hλ° C. for a first curing time and maintaining a second curing temperature of from about (T10hλ+10)° C. to about (T10hλ+35)° C. for a second curing time.

    INSERT MATERIALS WITH HIGH OXYGEN PERMEABILITY AND HIGH REFRACTIVE INDEX
    24.
    发明申请
    INSERT MATERIALS WITH HIGH OXYGEN PERMEABILITY AND HIGH REFRACTIVE INDEX 有权

    公开(公告)号：US20210302625A1

    公开(公告)日：2021-09-30

    申请号：US17205169

    申请日：2021-03-18

    Applicant: Alcon Inc.

    Inventor： Jing Cheng ,  Wei Liang ,  Steve Yun Zhang

    IPC: G02B1/04 ,  C08G77/06 ,  C08G77/32 ,  C08J3/24

    Abstract: The invention is generally related to an insert for being embedded in a silicone hydrogel contact lens. The insert is made of a crosslinked materials which are rigid in dry state at room temperature (from about 22° C. to about 26° C.), have a high oxygen permeability and a high refractive index in fully hydrated state, and can become softer at a temperature great than 32° C. Such materials are useful for making inserts in embedded contact lenses for correcting corneal astigmatism, presbyopia, and color blindness lenses and for imparting photochromic characteristics to the lenses. The invention is also related to a method for making embedded silicone hydrogel contact lenses comprising an insert of the invention therein and to embedded silicone hydrogel contact lenses comprising an insert of the invention therein.

    WETTABLE SILICONE HYDROGEL CONTACT LENSES
    25.
    发明申请
    WETTABLE SILICONE HYDROGEL CONTACT LENSES 有权

    公开(公告)号：US20210181379A1

    公开(公告)日：2021-06-17

    申请号：US17122109

    申请日：2020-12-15

    Applicant: Alcon Inc.

    Inventor： Ying Zheng ,  Jang-Shing Chiou ,  Jinbo Dou ,  Yuan Chang ,  Junhao Ge ,  Steve Yun Zhang ,  Li Yao ,  Karen Belinda Sentell ,  Ye Hong

    IPC: G02B1/04 ,  B65B25/00 ,  G02C7/04 ,  C08L71/02 ,  C08L39/06 ,  C08L83/04

    Abstract: The invention relates to an ophthalmic product which comprises a sealed and autoclave-sterilized lens package including (1) a post-autoclave packaging solution containing a polymeric surfactant having an HLB value of from about 11 to about 16 and a Mn of from about 800 to about 20,000 Daltons and (2) a readily-usable silicone hydrogel (SiHy) contact lens immersed in the packaging solution. The readily-usable SiHy contact lens comprises the polymeric surfactant thereon providing an excellent wettability to the readily-usable SiHy contact lens directly out of the lens package, and also the leachable polymeric surfactant which is physically distributed in the polymer matrix of the SiHy contact lens and can be released to the eye of a patient for at least 7 days of daily wear and to replenish the lens surface-bound polymeric surfactant to provide sustainable wettabilities to the contact lens and the eye.

    HYDROPHILIZED POLYDIORGANOSILOXANE VINYLIC CROSSLINKERS AND USES THEREOF
    27.
    发明申请
    HYDROPHILIZED POLYDIORGANOSILOXANE VINYLIC CROSSLINKERS AND USES THEREOF 有权

    公开(公告)号：US20210009743A1

    公开(公告)日：2021-01-14

    申请号：US17038349

    申请日：2020-09-30

    Applicant: Alcon Inc.

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

    IPC: C08F290/06 ,  G02B1/04 ,  C08G77/20 ,  C08G77/16 ,  C08G77/392

    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.

    PAD TRANSFER PRINTING METHOD FOR MAKING COLORED CONTACT LENSES
    28.
    发明申请
    PAD TRANSFER PRINTING METHOD FOR MAKING COLORED CONTACT LENSES 审中-公开

    公开(公告)号：US20200376788A1

    公开(公告)日：2020-12-03

    申请号：US16884536

    申请日：2020-05-27

    Applicant: Alcon Inc.

    Inventor： Richard Charles Breitkopf ,  Changhong Yin ,  Steve Yun Zhang

    IPC: B29D11/00 ,  C08L83/04 ,  G02B1/04

    Abstract: The invention relates to a pad printing instrument comprising an ink supply system capable of control the temperature, viscosity and colorant concentration of an ink in an ink cup. Such controls are achieved by continuously adding and mixing a cold ink having a composition identical to the ink in the ink cup but having a lower temperature. The continuous addition of a small amount of a cold ink into the ink cup could compensate heat generated by the friction between the ink cup and a cliché and could minimize the evaporation of a diluent in the ink and change in the concentration of colorants in the ink and ink viscosity. The invention also relates to use of a pad printing instrument comprising an ink supply system of the invention for producing colored hydrogel or silicone hydrogel contact lenses.

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