DIISOCYANATE COMPOSITION FOR OPTICAL LENS AND PREPARATION METHOD THEREOF
According to an embodiment, the pH of a diisocyanate composition and a diamine hydrochloride composition used in the preparation of an optical lens is adjusted to a specific range, whereby it is possible to enhance not only the yield and purity of the diisocyanate composition but also the optical ch...
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| creator | PAI, Jaeyoung MYUNG, Jung Hwan HAN, Hyuk Hee KIM, Jeongmoo |
| description | According to an embodiment, the pH of a diisocyanate composition and a diamine hydrochloride composition used in the preparation of an optical lens is adjusted to a specific range, whereby it is possible to enhance not only the yield and purity of the diisocyanate composition but also the optical characteristics of the final optical lens by suppressing the striae and cloudiness. Specifically, according to the process of the embodiment, the amount of an aqueous hydrochloric acid solution introduced to the reaction may be adjusted to control the pH of the diisocyanate composition to a desired range, thereby enhancing the yield and purity. Accordingly, the process for preparing a diisocyanate composition according to the embodiment can be applied to the preparation of a plastic optical lens of high quality. |
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Specifically, according to the process of the embodiment, the amount of an aqueous hydrochloric acid solution introduced to the reaction may be adjusted to control the pH of the diisocyanate composition to a desired range, thereby enhancing the yield and purity. Accordingly, the process for preparing a diisocyanate composition according to the embodiment can be applied to the preparation of a plastic optical lens of high quality.</description><language>eng</language><subject>ACYCLIC OR CARBOCYCLIC COMPOUNDS ; CHEMISTRY ; COMPOSITIONS BASED THEREON ; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS ; METALLURGY ; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS ; OPTICS ; ORGANIC CHEMISTRY ; ORGANIC MACROMOLECULAR COMPOUNDS ; PHYSICS ; THEIR PREPARATION OR CHEMICAL WORKING-UP</subject><creationdate>2021</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=20210610&DB=EPODOC&CC=US&NR=2021171452A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,309,781,886,25568,76551</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20210610&DB=EPODOC&CC=US&NR=2021171452A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>PAI, Jaeyoung</creatorcontrib><creatorcontrib>MYUNG, Jung Hwan</creatorcontrib><creatorcontrib>HAN, Hyuk Hee</creatorcontrib><creatorcontrib>KIM, Jeongmoo</creatorcontrib><title>DIISOCYANATE COMPOSITION FOR OPTICAL LENS AND PREPARATION METHOD THEREOF</title><description>According to an embodiment, the pH of a diisocyanate composition and a diamine hydrochloride composition used in the preparation of an optical lens is adjusted to a specific range, whereby it is possible to enhance not only the yield and purity of the diisocyanate composition but also the optical characteristics of the final optical lens by suppressing the striae and cloudiness. Specifically, according to the process of the embodiment, the amount of an aqueous hydrochloric acid solution introduced to the reaction may be adjusted to control the pH of the diisocyanate composition to a desired range, thereby enhancing the yield and purity. Accordingly, the process for preparing a diisocyanate composition according to the embodiment can be applied to the preparation of a plastic optical lens of high quality.</description><subject>ACYCLIC OR CARBOCYCLIC COMPOUNDS</subject><subject>CHEMISTRY</subject><subject>COMPOSITIONS BASED THEREON</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 CHEMISTRY</subject><subject>ORGANIC MACROMOLECULAR COMPOUNDS</subject><subject>PHYSICS</subject><subject>THEIR PREPARATION OR CHEMICAL WORKING-UP</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2021</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNyrEKwjAQANAsDqL-w4GzYKLifCQXEmhzITkHp1IkTqKF-v8I4gc4veUtVXAxVrZXTCgElvvMNUrkBJ4LcJZosYOOUgVMDnKhjAW_oScJ7EACFWK_Vov7-Jjb5udKbT2JDbs2vYY2T-OtPdt7uFSzN1qf9fFkUB_-Wx_YzS3x</recordid><startdate>20210610</startdate><enddate>20210610</enddate><creator>PAI, Jaeyoung</creator><creator>MYUNG, Jung Hwan</creator><creator>HAN, Hyuk Hee</creator><creator>KIM, Jeongmoo</creator><scope>EVB</scope></search><sort><creationdate>20210610</creationdate><title>DIISOCYANATE COMPOSITION FOR OPTICAL LENS AND PREPARATION METHOD THEREOF</title><author>PAI, Jaeyoung ; MYUNG, Jung Hwan ; HAN, Hyuk Hee ; KIM, Jeongmoo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US2021171452A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2021</creationdate><topic>ACYCLIC OR CARBOCYCLIC COMPOUNDS</topic><topic>CHEMISTRY</topic><topic>COMPOSITIONS BASED THEREON</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 CHEMISTRY</topic><topic>ORGANIC MACROMOLECULAR COMPOUNDS</topic><topic>PHYSICS</topic><topic>THEIR PREPARATION OR CHEMICAL WORKING-UP</topic><toplevel>online_resources</toplevel><creatorcontrib>PAI, Jaeyoung</creatorcontrib><creatorcontrib>MYUNG, Jung Hwan</creatorcontrib><creatorcontrib>HAN, Hyuk Hee</creatorcontrib><creatorcontrib>KIM, Jeongmoo</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>PAI, Jaeyoung</au><au>MYUNG, Jung Hwan</au><au>HAN, Hyuk Hee</au><au>KIM, Jeongmoo</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>DIISOCYANATE COMPOSITION FOR OPTICAL LENS AND PREPARATION METHOD THEREOF</title><date>2021-06-10</date><risdate>2021</risdate><abstract>According to an embodiment, the pH of a diisocyanate composition and a diamine hydrochloride composition used in the preparation of an optical lens is adjusted to a specific range, whereby it is possible to enhance not only the yield and purity of the diisocyanate composition but also the optical characteristics of the final optical lens by suppressing the striae and cloudiness. Specifically, according to the process of the embodiment, the amount of an aqueous hydrochloric acid solution introduced to the reaction may be adjusted to control the pH of the diisocyanate composition to a desired range, thereby enhancing the yield and purity. Accordingly, the process for preparing a diisocyanate composition according to the embodiment can be applied to the preparation of a plastic optical lens of high quality.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS ORGANIC CHEMISTRY ORGANIC MACROMOLECULAR COMPOUNDS PHYSICS THEIR PREPARATION OR CHEMICAL WORKING-UP |
| title | DIISOCYANATE COMPOSITION FOR OPTICAL LENS AND PREPARATION METHOD THEREOF |
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