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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.
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公开(公告)号：US12297323B2
公开(公告)日：2025-05-13
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 , C08G77/00
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.
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公开(公告)号：US20240092043A1
公开(公告)日：2024-03-21
申请号：US18450451
申请日：2023-08-16
Applicant: Alcon Inc.
Inventor： Frank Chang , Troy Vernon Holland , Thomas M. Moy
CPC classification number: B29D11/00134 , C08F20/06 , C08F30/02 , C08J7/056 , G02B1/043
Abstract: The invention is related to a cost-effective method for making a coated contact lens having a hydrogel coating thereon. A method of the invention involves heating a contact lens precursor having carboxylic acid groups on and/or near its surface in an aqueous solution in the presence of a hydrophilic copolymer that comprises monomeric units of (a) at least one epoxy-containing vinylic monomer, (b) at least one amino-containing vinylic monomer having a primary or secondary amino group, (c) at least one polyethyleneglycol-containing vinylic monomer, and (d) at least one phosphorylcholine-containing vinylic monomer, at a temperature from about 100° C. to about 140° C. for at least 30 minutes, thereby forming a hydrogel coating on the contact lens precursor. Such a method can be advantageously implemented directly in a sealed lens package during autoclave.
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公开(公告)号：US20230004023A1
公开(公告)日：2023-01-05
申请号：US17838358
申请日：2022-06-13
Applicant: Alcon Inc.
Inventor： Zahra Bassampour , Chandana Kolluru , Steve Yun Zhang , Adam K. Sniady , Thomas M. Moy , Frank Chang , David Borja , Joseph Michael Lindacher , Ying Pi
Abstract: The invention provides a delamination-resistant embedded silicone hydrogel contact lens having an insert that is embedded in a silicone hydrogel bulk material. The insert is made of a crosslinked polymeric material having a refractive index higher than that of the silicone hydrogel bulk material by at least 0.07 and comprises a diffractive structure disposed on one of the front and back curve surfaces of the insert for providing a diffractive power that contributes to the overall optical power of the contact lens.
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