SG11201407327VA - Azetidinium-containing copolymers and uses thereof - Google Patents
Azetidinium-containing copolymers and uses thereofInfo
- Publication number
- SG11201407327VA SG11201407327VA SG11201407327VA SG11201407327VA SG11201407327VA SG 11201407327V A SG11201407327V A SG 11201407327VA SG 11201407327V A SG11201407327V A SG 11201407327VA SG 11201407327V A SG11201407327V A SG 11201407327VA SG 11201407327V A SG11201407327V A SG 11201407327VA
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- Singapore
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/24—Homopolymers or copolymers of amides or imides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00009—Production of simple or compound lenses
- B29D11/00038—Production of contact lenses
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00865—Applying coatings; tinting; colouring
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D205/00—Heterocyclic compounds containing four-membered rings with one nitrogen atom as the only ring hetero atom
- C07D205/02—Heterocyclic compounds containing four-membered rings with one nitrogen atom as the only ring hetero atom not condensed with other rings
- C07D205/04—Heterocyclic compounds containing four-membered rings with one nitrogen atom as the only ring hetero atom not condensed with other rings having no double bonds between ring members or between ring members and non-ring members
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F20/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/56—Acrylamide; Methacrylamide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F224/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a heterocyclic ring containing oxygen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F26/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F26/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen
- C08F26/06—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen by a heterocyclic ring containing nitrogen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/12—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polysiloxanes
- C08F283/124—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polysiloxanes on to polysiloxanes having carbon-to-carbon double bonds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/24—Homopolymers or copolymers of amides or imides
- C09D133/26—Homopolymers or copolymers of acrylamide or methacrylamide
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D137/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a heterocyclic ring containing oxygen; Coating compositions based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D139/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen; Coating compositions based on derivatives of such polymers
- C09D139/04—Homopolymers or copolymers of monomers containing heterocyclic rings having nitrogen as ring member
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/08—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C09D151/085—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds on to polysiloxanes
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/04—Contact lenses for the eyes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2500/00—Characteristics or properties of obtained polyolefins; Use thereof
- C08F2500/26—Use as polymer for film forming
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Ophthalmology & Optometry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Health & Medical Sciences (AREA)
- Eyeglasses (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Paints Or Removers (AREA)
- Macromonomer-Based Addition Polymer (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Surface Treatment Of Optical Elements (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Cosmetics (AREA)
- Detergent Compositions (AREA)
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
Abstract
(12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 19 December 2013 (19.12.2013) WIPOIPCT (10) International Publication Number WO 2013/188274 A2 (51) International Patent Classification: B05D 3/10 (2006.01) (21) International Application Number: (22) International Filing Date: (25) Filing Language: (26) Publication Language: PCT/US2013/044938 10 June 2013 (10.06.2013) English English (30) Priority Data: 61/659,592 14 June 2012 (14.06.2012) US (71) Applicant: NOVARTIS AG [CH/CH]; Lichtstrasse 35, CH-4056 Basel (CH). (72) Inventor; and (71) Applicant : HOLLAND, Troy Vernon [US/US]; 357 Breezewood Court, Suwanee, Georgia 30024 (US). (72) Inventors: CHANG, Frank; 1807 Fenton Manor, Cum- ming, Georgia 30041 (US). QIU, Yongxing; 540 Stedford Lane, Duluth, Georgia 30097 (US). PRUITT, John Dal las; 5060 Winding Rose Drive, Suwanee, Georgia 30024 (US). CHIANG, Chung-Yuan; 340 Findley Way, Johns Creek, Georgia 30097 (US). SHANKERNARAYANAN, Manivakkam J.; 4730 Hastings Terrace, Alpharetta, Geor gia 30005 (US). SCOTT, Robert; 1220 Longpointe Pass, Alpharetta, Georgia 30005 (US). KAPOOR, Yash; 17209 Sugarloaf Reserve Drive, Duluth, Georgia 30097 (US). (74) Agent: ZHOU, Jian S .; Ciba Vision Corporation, Patent Department, 11460 Johns Creek Parkway, Johns Creek, Georgia 30097 (US). (81) Designated States (unless otherwise indicated, for every kind of national protection available)'. AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available)'. ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, [Continued on next page] (54) Title: AZETIDINIUM-CONTAINING COPOLYMERS AND USES THEREOF CJ l> CJ oo oo ^ ave |ig uptake/lens avg \xg release/ lens (57) Abstract: The invention is related to azetidinium-containing copolymers and vinylic monomers and their uses in formation of non-silicone hydrogel coatings on silicone hydrogel contact lenses. Figure 1 WO 2013/188274 A2 I lllll llllllll II llllll III lllll lllll III III III lllll lllll lllll lllll lllll llll lllllll llll llll llll MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, Published: SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, i ; , A , u uv ; A ' ' T -r,„ — without international search report and to be republished GW, KM, ML, MR, NE, SN, TD, TG). ^ ^ ^ (R J g 4g2(g)) Declarations under Rule 4.17: — as to the applicant's entitlement to claim the priority of the earlier application (Rule 4.17(iii))
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201261659592P | 2012-06-14 | 2012-06-14 | |
PCT/US2013/044938 WO2013188274A2 (en) | 2012-06-14 | 2013-06-10 | Azetidinium-containing copolymers and uses thereof |
Publications (1)
Publication Number | Publication Date |
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SG11201407327VA true SG11201407327VA (en) | 2014-12-30 |
Family
ID=48672835
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SG11201407327VA SG11201407327VA (en) | 2012-06-14 | 2013-06-10 | Azetidinium-containing copolymers and uses thereof |
Country Status (17)
Country | Link |
---|---|
US (3) | US9422447B2 (en) |
EP (1) | EP2861413B1 (en) |
JP (3) | JP6306576B2 (en) |
KR (1) | KR102051174B1 (en) |
CN (1) | CN104364070B (en) |
AU (1) | AU2013274549B2 (en) |
BR (1) | BR112014028700B1 (en) |
CA (1) | CA2870333C (en) |
HK (1) | HK1203449A1 (en) |
IN (1) | IN2014DN09755A (en) |
MX (1) | MX366036B (en) |
MY (1) | MY168781A (en) |
NZ (1) | NZ700848A (en) |
RU (1) | RU2647728C2 (en) |
SG (1) | SG11201407327VA (en) |
TW (1) | TWI555761B (en) |
WO (1) | WO2013188274A2 (en) |
Families Citing this family (26)
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EP2931504B1 (en) * | 2012-12-11 | 2018-09-26 | Novartis AG | Method for applying a coating onto a silicone hydrogel lens |
AU2015306901B2 (en) * | 2014-08-26 | 2017-10-12 | Alcon Inc. | Poly(oxazoline-co-ethyleneimine)-epichlorohydrin copolymers and uses thereof |
KR101947421B1 (en) * | 2014-10-20 | 2019-02-14 | (주)엘지하우시스 | Aqueous composition for coating a surface and a seat cover for automobile applied the same |
WO2016145204A1 (en) | 2015-03-11 | 2016-09-15 | University Of Florida Research Foundation, Inc. | Mesh size control of lubrication in gemini hydrogels |
US10324233B2 (en) * | 2015-09-04 | 2019-06-18 | Novartis Ag | Soft silicone medical devices with durable lubricious coatings thereon |
KR102604468B1 (en) | 2015-12-15 | 2023-11-22 | 알콘 인코포레이티드 | Method for applying stable coatings on silicone hydrogel contact lenses |
SG11201900640UA (en) | 2016-09-20 | 2019-04-29 | Novartis Ag | Process for producing contact lenses with durable lubricious coatings thereon |
CN109689798B (en) * | 2016-09-20 | 2021-10-15 | 爱尔康公司 | Method for producing water-soluble thermally crosslinkable polymer materials |
EP3516430B1 (en) * | 2016-09-20 | 2021-02-17 | Alcon Inc. | Hydrogel contact lenses with lubricious coating thereon |
CN109690362B (en) * | 2016-09-20 | 2022-05-24 | 爱尔康公司 | Colored hydrogel contact lenses having lubricious coatings thereon |
HUE051063T2 (en) | 2016-10-19 | 2021-03-01 | Alcon Inc | Hydrophilic copolymer with one thiol-containing terminal group |
EP3529284B1 (en) * | 2016-10-19 | 2023-06-28 | Alcon Inc. | Hydrophilic copolymer with pendant thiol groups |
CN109844570A (en) | 2016-10-26 | 2019-06-04 | 诺华股份有限公司 | There are the soft contact lenses for the lubricant coating being covalently attached on it |
TWI607768B (en) * | 2017-03-31 | 2017-12-11 | 晶碩光學股份有限公司 | Composition for contact lenses and method for caring contact lenses |
US10676608B2 (en) | 2017-07-18 | 2020-06-09 | Alcon Inc. | Phosphorylcholine-containing poly(meth)acrylamide-based copolymers |
WO2019016696A1 (en) | 2017-07-18 | 2019-01-24 | Novartis Ag | Poly(meth)acrylamide-based copolymers with carboxyl-terminated pendant chains |
CN117492228A (en) | 2017-12-13 | 2024-02-02 | 爱尔康公司 | Zhou Pao and month polishing gradient contact lens |
US11448796B2 (en) | 2018-04-13 | 2022-09-20 | Alcon Inc. | Evaluation method for the coverage of a coating on a contact lens surface |
WO2020115570A1 (en) | 2018-12-03 | 2020-06-11 | Alcon Inc. | Method for making coated silicone hydrogel contact lenses |
SG11202104402PA (en) | 2018-12-03 | 2021-06-29 | Alcon Inc | Method for coated silicone hydrogel contact lenses |
US11648583B2 (en) | 2019-04-10 | 2023-05-16 | Alcon Inc. | Method for producing coated contact lenses |
US20210132411A1 (en) | 2019-11-04 | 2021-05-06 | Alcon Inc. | Contact lenses with surfaces having different softness |
CN111205462B (en) * | 2020-01-10 | 2021-03-30 | 山东大学 | Preparation method of silicone resin containing perfluor cyclobutyl aryl ether structure |
US20220032564A1 (en) | 2020-07-28 | 2022-02-03 | Alcon Inc. | Contact lenses with softer lens surfaces |
CN113150225B (en) * | 2021-05-11 | 2022-01-04 | 西南石油大学 | Bifunctional ligand, 3D polymer molecular brush and preparation method thereof |
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