[EN] TIME-TEMPERATURE INDICATOR BASED ON THIOALKYL AND THIOARYL SUBSTITUTED SPIROAROMATICS<br/>[FR] INDICATEUR DE TEMPS-TEMPÉRATURE SE BASANT SUR DES SPIROAROMATIQUES SUBSTITUÉS PAR UN THIOALKYLE ET UN THIOARYLE
申请人:FRESHPOINT HOLDINGS SA
公开号:WO2010092030A1
公开(公告)日:2010-08-19
The present invention relates to photochromic spiropyrans as active ingredients of Time- Temperature Indicators (TTIs), and to new spiropyrans per se. More particularly, the invention provides TTIs on the base of photochromic spiropyrans comprising alkylsulfanyl/arylsulfanyl substituents in the phenyl ring of the benzopyrane moiety.