Thermochromic infrared dyes
The invention is in the field of intrinsically thermochromic material. We have found that infrared absorbing dyes of the azamethine type have intrinsically thermochromic properties. The use of said dyes as thermochromic material has the advantage that they can be thermally activated by infrared irra...
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| creator | GRIFFITHS JOHN DE WIT PAULUS P BELLO KASALI A ERDHUISEN ERWIN W. P |
| description | The invention is in the field of intrinsically thermochromic material. We have found that infrared absorbing dyes of the azamethine type have intrinsically thermochromic properties. The use of said dyes as thermochromic material has the advantage that they can be thermally activated by infrared irradiation. Irradiation of such material with a laser causes a color change that can be used in imaging and optical data storage. The thermochromic dyes can be mixed with polymeric material and from the resulting polymer composition films can be made. If the dye contains polymerizable groups, it may be covalently incorporated into the polymer. |
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We have found that infrared absorbing dyes of the azamethine type have intrinsically thermochromic properties. The use of said dyes as thermochromic material has the advantage that they can be thermally activated by infrared irradiation. Irradiation of such material with a laser causes a color change that can be used in imaging and optical data storage. The thermochromic dyes can be mixed with polymeric material and from the resulting polymer composition films can be made. If the dye contains polymerizable groups, it may be covalently incorporated into the polymer.</description><edition>6</edition><language>eng</language><subject>ADHESIVES ; CHEMISTRY ; COLOUR PRINTING ; DYES ; INFORMATION STORAGE ; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER ; LAKES ; LINING MACHINES ; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE ; METALLURGY ; MISCELLANEOUS APPLICATIONS OF MATERIALS ; MISCELLANEOUS COMPOSITIONS ; MORDANTS ; NATURAL RESINS ; ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES ; PAINTS ; PERFORMING OPERATIONS ; PHYSICS ; POLISHES ; PRINTING ; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES ; STAMPS ; TRANSPORTING ; TYPEWRITERS</subject><creationdate>1995</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=19950620&DB=EPODOC&CC=US&NR=5426143A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19950620&DB=EPODOC&CC=US&NR=5426143A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>GRIFFITHS; JOHN</creatorcontrib><creatorcontrib>DE WIT; PAULUS P</creatorcontrib><creatorcontrib>BELLO; KASALI A</creatorcontrib><creatorcontrib>ERDHUISEN; ERWIN W. P</creatorcontrib><title>Thermochromic infrared dyes</title><description>The invention is in the field of intrinsically thermochromic material. We have found that infrared absorbing dyes of the azamethine type have intrinsically thermochromic properties. The use of said dyes as thermochromic material has the advantage that they can be thermally activated by infrared irradiation. Irradiation of such material with a laser causes a color change that can be used in imaging and optical data storage. The thermochromic dyes can be mixed with polymeric material and from the resulting polymer composition films can be made. If the dye contains polymerizable groups, it may be covalently incorporated into the polymer.</description><subject>ADHESIVES</subject><subject>CHEMISTRY</subject><subject>COLOUR PRINTING</subject><subject>DYES</subject><subject>INFORMATION STORAGE</subject><subject>INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER</subject><subject>LAKES</subject><subject>LINING MACHINES</subject><subject>MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE</subject><subject>METALLURGY</subject><subject>MISCELLANEOUS APPLICATIONS OF MATERIALS</subject><subject>MISCELLANEOUS COMPOSITIONS</subject><subject>MORDANTS</subject><subject>NATURAL RESINS</subject><subject>ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES</subject><subject>PAINTS</subject><subject>PERFORMING OPERATIONS</subject><subject>PHYSICS</subject><subject>POLISHES</subject><subject>PRINTING</subject><subject>PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES</subject><subject>STAMPS</subject><subject>TRANSPORTING</subject><subject>TYPEWRITERS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1995</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZJAOyUgtys1PzijKz81MVsjMSytKLEpNUUipTC3mYWBNS8wpTuWF0twM8m6uIc4euqkF-fGpxQWJyal5qSXxocGmJkZmhibGjsaEVQAAChIi8g</recordid><startdate>19950620</startdate><enddate>19950620</enddate><creator>GRIFFITHS; JOHN</creator><creator>DE WIT; PAULUS P</creator><creator>BELLO; KASALI A</creator><creator>ERDHUISEN; ERWIN W. 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P</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>GRIFFITHS; JOHN</au><au>DE WIT; PAULUS P</au><au>BELLO; KASALI A</au><au>ERDHUISEN; ERWIN W. P</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Thermochromic infrared dyes</title><date>1995-06-20</date><risdate>1995</risdate><abstract>The invention is in the field of intrinsically thermochromic material. We have found that infrared absorbing dyes of the azamethine type have intrinsically thermochromic properties. The use of said dyes as thermochromic material has the advantage that they can be thermally activated by infrared irradiation. Irradiation of such material with a laser causes a color change that can be used in imaging and optical data storage. The thermochromic dyes can be mixed with polymeric material and from the resulting polymer composition films can be made. If the dye contains polymerizable groups, it may be covalently incorporated into the polymer.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| subjects | ADHESIVES CHEMISTRY COLOUR PRINTING DYES INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER LAKES LINING MACHINES MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MORDANTS NATURAL RESINS ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES PAINTS PERFORMING OPERATIONS PHYSICS POLISHES PRINTING PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES STAMPS TRANSPORTING TYPEWRITERS |
| title | Thermochromic infrared dyes |
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