Method for making photochromic contact lenses
Described herein is a method for producing a contact lens comprising a central photochromic zone that has a diameter of about 13 mm or less and is concentric with the central axis of the contact lens. The method comprises: applying a first polymerizable fluid composition containing at least one phot...
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| creator | Kolluru, Chandana Bassampour, Zahra Plavnik, Michelle Zhang, Steve Yun Breitkopf, Richard Charles |
| description | Described herein is a method for producing a contact lens comprising a central photochromic zone that has a diameter of about 13 mm or less and is concentric with the central axis of the contact lens. The method comprises: applying a first polymerizable fluid composition containing at least one photochromic compound on a central portion of the molding surface of a female mold half to form a circular layer; partially photocuring, in situ, the circular layer in the female mold half by using a visible light; 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 thermally curing the second polymerizable fluid composition and the partially-cured circular layer immersed therein in the mold cavity formed between the molding surfaces of the female mold half and a male mold half. |
| format | Patent |
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The method comprises: applying a first polymerizable fluid composition containing at least one photochromic compound on a central portion of the molding surface of a female mold half to form a circular layer; partially photocuring, in situ, the circular layer in the female mold half by using a visible light; 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 thermally curing the second polymerizable fluid composition and the partially-cured circular layer immersed therein in the mold cavity formed between the molding surfaces of the female mold half and a male mold half.</description><language>eng</language><subject>CHEMISTRY ; COMPOSITIONS BASED THEREON ; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS ; CONTACT LENSES ; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS ; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS ; METALLURGY ; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS ; OPTICS ; ORGANIC MACROMOLECULAR COMPOUNDS ; PERFORMING OPERATIONS ; PHYSICS ; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE ; SPECTACLES ; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES ; THEIR PREPARATION OR CHEMICAL WORKING-UP ; TRANSPORTING ; WORKING OF PLASTICS ; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</subject><creationdate>2024</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20241008&DB=EPODOC&CC=US&NR=12111443B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20241008&DB=EPODOC&CC=US&NR=12111443B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Kolluru, Chandana</creatorcontrib><creatorcontrib>Bassampour, Zahra</creatorcontrib><creatorcontrib>Plavnik, Michelle</creatorcontrib><creatorcontrib>Zhang, Steve Yun</creatorcontrib><creatorcontrib>Breitkopf, Richard Charles</creatorcontrib><title>Method for making photochromic contact lenses</title><description>Described herein is a method for producing a contact lens comprising a central photochromic zone that has a diameter of about 13 mm or less and is concentric with the central axis of the contact lens. The method comprises: applying a first polymerizable fluid composition containing at least one photochromic compound on a central portion of the molding surface of a female mold half to form a circular layer; partially photocuring, in situ, the circular layer in the female mold half by using a visible light; 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 thermally curing the second polymerizable fluid composition and the partially-cured circular layer immersed therein in the mold cavity formed between the molding surfaces of the female mold half and a male mold half.</description><subject>CHEMISTRY</subject><subject>COMPOSITIONS BASED THEREON</subject><subject>COMPOSITIONS OF MACROMOLECULAR COMPOUNDS</subject><subject>CONTACT LENSES</subject><subject>INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS</subject><subject>MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS</subject><subject>METALLURGY</subject><subject>OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS</subject><subject>OPTICS</subject><subject>ORGANIC MACROMOLECULAR COMPOUNDS</subject><subject>PERFORMING OPERATIONS</subject><subject>PHYSICS</subject><subject>PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE</subject><subject>SPECTACLES</subject><subject>SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES</subject><subject>THEIR PREPARATION OR CHEMICAL WORKING-UP</subject><subject>TRANSPORTING</subject><subject>WORKING OF PLASTICS</subject><subject>WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2024</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZND1TS3JyE9RSMsvUshNzM7MS1coyMgvyU_OKMrPzUxWSM7PK0lMLlHISc0rTi3mYWBNS8wpTuWF0twMim6uIc4euqkF-fGpxQWJyal5qSXxocGGRoaGhiYmxk5GxsSoAQDaJipu</recordid><startdate>20241008</startdate><enddate>20241008</enddate><creator>Kolluru, Chandana</creator><creator>Bassampour, Zahra</creator><creator>Plavnik, Michelle</creator><creator>Zhang, Steve Yun</creator><creator>Breitkopf, Richard Charles</creator><scope>EVB</scope></search><sort><creationdate>20241008</creationdate><title>Method for making photochromic contact lenses</title><author>Kolluru, Chandana ; Bassampour, Zahra ; Plavnik, Michelle ; Zhang, Steve Yun ; Breitkopf, Richard Charles</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US12111443B23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2024</creationdate><topic>CHEMISTRY</topic><topic>COMPOSITIONS BASED THEREON</topic><topic>COMPOSITIONS OF MACROMOLECULAR COMPOUNDS</topic><topic>CONTACT LENSES</topic><topic>INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS</topic><topic>MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS</topic><topic>METALLURGY</topic><topic>OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS</topic><topic>OPTICS</topic><topic>ORGANIC MACROMOLECULAR COMPOUNDS</topic><topic>PERFORMING OPERATIONS</topic><topic>PHYSICS</topic><topic>PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE</topic><topic>SPECTACLES</topic><topic>SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES</topic><topic>THEIR PREPARATION OR CHEMICAL WORKING-UP</topic><topic>TRANSPORTING</topic><topic>WORKING OF PLASTICS</topic><topic>WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</topic><toplevel>online_resources</toplevel><creatorcontrib>Kolluru, Chandana</creatorcontrib><creatorcontrib>Bassampour, Zahra</creatorcontrib><creatorcontrib>Plavnik, Michelle</creatorcontrib><creatorcontrib>Zhang, Steve Yun</creatorcontrib><creatorcontrib>Breitkopf, Richard Charles</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Kolluru, Chandana</au><au>Bassampour, Zahra</au><au>Plavnik, Michelle</au><au>Zhang, Steve Yun</au><au>Breitkopf, Richard Charles</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Method for making photochromic contact lenses</title><date>2024-10-08</date><risdate>2024</risdate><abstract>Described herein is a method for producing a contact lens comprising a central photochromic zone that has a diameter of about 13 mm or less and is concentric with the central axis of the contact lens. 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| subjects | CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS CONTACT LENSES INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICS PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE SPECTACLES SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL |
| title | Method for making photochromic contact lenses |
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