Benzotriazole-based novel UV absorbers and photographic elements containing them
An ultraviolet absorbing compound of formula (I) below, and photographic elements containing such a compound as an ultraviolet absorber: (I) wherein: R1-R4 independently is a hydrogen atom, a halogen atom such as fluoro, chloro, bromo, iodo or a combination thereof; a carbalkoxy group having at leas...
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| creator | VISHWAKARMA LAL C BRIFFA BARRY F BROWN GLENN M |
| description | An ultraviolet absorbing compound of formula (I) below, and photographic elements containing such a compound as an ultraviolet absorber: (I) wherein: R1-R4 independently is a hydrogen atom, a halogen atom such as fluoro, chloro, bromo, iodo or a combination thereof; a carbalkoxy group having at least one asymmetric carbon or asymmetric silicon atom; an alkoxy group having at least one asymmetric carbon or asymmetric silicon atom, with the proviso that R2 or R3, or both R2 and R3 are other than hydrogen; A* is a group having a carbon atom directly attached to 2'-hydroxyphenyl ring at the 5'-position which contains at least one asymmetric carbon atom or an asymmetric silicon atom, and; wherein the ultraviolet absorbing compound of formula (I) is a mixture of two enantiomers about the asymmetric carbon or silicon atom of A*. |
| format | Patent |
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a carbalkoxy group having at least one asymmetric carbon or asymmetric silicon atom; an alkoxy group having at least one asymmetric carbon or asymmetric silicon atom, with the proviso that R2 or R3, or both R2 and R3 are other than hydrogen; A* is a group having a carbon atom directly attached to 2'-hydroxyphenyl ring at the 5'-position which contains at least one asymmetric carbon atom or an asymmetric silicon atom, and; wherein the ultraviolet absorbing compound of formula (I) is a mixture of two enantiomers about the asymmetric carbon or silicon atom of A*.</description><edition>6</edition><language>eng</language><subject>AUXILIARY PROCESSES IN PHOTOGRAPHY ; CINEMATOGRAPHY ; ELECTROGRAPHY ; HOLOGRAPHY ; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES ; PHOTOGRAPHY ; PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES ; PHYSICS</subject><creationdate>1998</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=19980929&DB=EPODOC&CC=US&NR=5814438A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76293</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19980929&DB=EPODOC&CC=US&NR=5814438A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>VISHWAKARMA; LAL C</creatorcontrib><creatorcontrib>BRIFFA; BARRY F</creatorcontrib><creatorcontrib>BROWN; GLENN M</creatorcontrib><title>Benzotriazole-based novel UV absorbers and photographic elements containing them</title><description>An ultraviolet absorbing compound of formula (I) below, and photographic elements containing such a compound as an ultraviolet absorber: (I) wherein: R1-R4 independently is a hydrogen atom, a halogen atom such as fluoro, chloro, bromo, iodo or a combination thereof; a carbalkoxy group having at least one asymmetric carbon or asymmetric silicon atom; an alkoxy group having at least one asymmetric carbon or asymmetric silicon atom, with the proviso that R2 or R3, or both R2 and R3 are other than hydrogen; A* is a group having a carbon atom directly attached to 2'-hydroxyphenyl ring at the 5'-position which contains at least one asymmetric carbon atom or an asymmetric silicon atom, and; wherein the ultraviolet absorbing compound of formula (I) is a mixture of two enantiomers about the asymmetric carbon or silicon atom of A*.</description><subject>AUXILIARY PROCESSES IN PHOTOGRAPHY</subject><subject>CINEMATOGRAPHY</subject><subject>ELECTROGRAPHY</subject><subject>HOLOGRAPHY</subject><subject>PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES</subject><subject>PHOTOGRAPHY</subject><subject>PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES</subject><subject>PHYSICS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1998</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqFyrEOgjAQBmAWB6M-g_cCDAZMWNVoHE0UV3KFH9qk3DVt48DTu7g7fcu3Lh5nyKI5Ol7UozScMJDoB57aN7FJGg1iIpaBgtWsU-RgXU_wmCE5Ua-S2YmTibLFvC1WI_uE3c9Nsb9dX5d7iaAdUuAegty1z2NzqOuqOVX_xxcElzc5</recordid><startdate>19980929</startdate><enddate>19980929</enddate><creator>VISHWAKARMA; LAL C</creator><creator>BRIFFA; BARRY F</creator><creator>BROWN; GLENN M</creator><scope>EVB</scope></search><sort><creationdate>19980929</creationdate><title>Benzotriazole-based novel UV absorbers and photographic elements containing them</title><author>VISHWAKARMA; LAL C ; BRIFFA; BARRY F ; BROWN; GLENN M</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US5814438A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1998</creationdate><topic>AUXILIARY PROCESSES IN PHOTOGRAPHY</topic><topic>CINEMATOGRAPHY</topic><topic>ELECTROGRAPHY</topic><topic>HOLOGRAPHY</topic><topic>PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES</topic><topic>PHOTOGRAPHY</topic><topic>PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES</topic><topic>PHYSICS</topic><toplevel>online_resources</toplevel><creatorcontrib>VISHWAKARMA; LAL C</creatorcontrib><creatorcontrib>BRIFFA; BARRY F</creatorcontrib><creatorcontrib>BROWN; GLENN M</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>VISHWAKARMA; LAL C</au><au>BRIFFA; BARRY F</au><au>BROWN; GLENN M</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Benzotriazole-based novel UV absorbers and photographic elements containing them</title><date>1998-09-29</date><risdate>1998</risdate><abstract>An ultraviolet absorbing compound of formula (I) below, and photographic elements containing such a compound as an ultraviolet absorber: (I) wherein: R1-R4 independently is a hydrogen atom, a halogen atom such as fluoro, chloro, bromo, iodo or a combination thereof; a carbalkoxy group having at least one asymmetric carbon or asymmetric silicon atom; an alkoxy group having at least one asymmetric carbon or asymmetric silicon atom, with the proviso that R2 or R3, or both R2 and R3 are other than hydrogen; A* is a group having a carbon atom directly attached to 2'-hydroxyphenyl ring at the 5'-position which contains at least one asymmetric carbon atom or an asymmetric silicon atom, and; wherein the ultraviolet absorbing compound of formula (I) is a mixture of two enantiomers about the asymmetric carbon or silicon atom of A*.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| subjects | AUXILIARY PROCESSES IN PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES PHOTOGRAPHY PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES PHYSICS |
| title | Benzotriazole-based novel UV absorbers and photographic elements containing them |
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