Method for making silicone hydrogel contact lenses
The invention provides a method for making silicone hydrogel contact lenses. The method of the invention is characterized by using an organic solvent as a processing-aid tool for controlling lens diameter without significantly affecting lens equilibrium water content during cast-molding of soft cont...
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| creator | Lang, Weihong Wu, Daqing Zhang, Steve Yun Kumi, Augustine Twum Breitkopf, Richard Charles Ge, Junhao |
| description | The invention provides a method for making silicone hydrogel contact lenses. The method of the invention is characterized by using an organic solvent as a processing-aid tool for controlling lens diameter without significantly affecting lens equilibrium water content during cast-molding of soft contact lenses from a polymerizable composition. By adjusting the weight percentage of the organic solvent in a polymerizable composition for making SiHy contact lenses, one can adjust lens diameter of produced SiHy lenses to meet target without affecting adversely the lens properties. |
| format | Patent |
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The method of the invention is characterized by using an organic solvent as a processing-aid tool for controlling lens diameter without significantly affecting lens equilibrium water content during cast-molding of soft contact lenses from a polymerizable composition. By adjusting the weight percentage of the organic solvent in a polymerizable composition for making SiHy contact lenses, one can adjust lens diameter of produced SiHy lenses to meet target without affecting adversely the lens properties.</description><language>eng</language><subject>CHEMISTRY ; COMPOSITIONS BASED THEREON ; 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 ; THEIR PREPARATION OR CHEMICAL WORKING-UP ; TRANSPORTING ; WORKING OF PLASTICS ; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</subject><creationdate>2022</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=20220830&DB=EPODOC&CC=US&NR=11427685B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25563,76318</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20220830&DB=EPODOC&CC=US&NR=11427685B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Lang, Weihong</creatorcontrib><creatorcontrib>Wu, Daqing</creatorcontrib><creatorcontrib>Zhang, Steve Yun</creatorcontrib><creatorcontrib>Kumi, Augustine Twum</creatorcontrib><creatorcontrib>Breitkopf, Richard Charles</creatorcontrib><creatorcontrib>Ge, Junhao</creatorcontrib><title>Method for making silicone hydrogel contact lenses</title><description>The invention provides a method for making silicone hydrogel contact lenses. 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The method of the invention is characterized by using an organic solvent as a processing-aid tool for controlling lens diameter without significantly affecting lens equilibrium water content during cast-molding of soft contact lenses from a polymerizable composition. By adjusting the weight percentage of the organic solvent in a polymerizable composition for making SiHy contact lenses, one can adjust lens diameter of produced SiHy lenses to meet target without affecting adversely the lens properties.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMISTRY COMPOSITIONS BASED THEREON 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 THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL |
| title | Method for making silicone hydrogel contact lenses |
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