英语音标mp3专利名称：Recording materials containing
chromenoindoles
culture shock
describe>检验检疫局英文发明人：Hideo Usui,Sadao Ishige,Keiso Saeki 申请号：US06/016465
singles
申请日：19790301
公开号：US04220356A
公开日：
garland
合肥中考查分
19800902
相信的英文
专利内容由知识产权出版社提供
dbk摘要：A chromenoindole derivative of the following general formula (I): ##STR1## wherein R.sub.1 and R.sub.2, which may be the same or different, each reprents an alkyl group, an alkyl group substituted with one or more of a cyano group, a halogen atom or an alkoxy group, an aralkyl group, a phenyl group or a phenyl group substituted with one or more of an alkyl group or a halogen atom; X reprents a hydrogen atom, an alkoxy group, a dialkylamino group, an alkylarylamino group, an alkylaralkylamino group, a diaralkylamino group, an acylamino group, a halogen atom or an alkyl group; Y reprents a hydrogen atom, an alkyl group, a halogen atom, an alkoxy group of a nitro group; Z reprents an acyl group, or a sulfonyl group; Q.sub.1 and Q.sub.2, which may be the same or different, each reprents a hydrogen atom, a lower alkyl group or a halogen atom; and A.sub.1, A.sub.2, A.sub.3 and A.sub.4, which may be the same or different, each reprents a halogen atom, an alkyl group or an alkoxy group; which upon contact with an electron acceptor material forms a color with superior light fastness and which is uful as a color former in various recording materials such as pressure-nsitive recording sheets, thermonsitive recording sheets, electrothermonsitive recording sheets, and photonsitive recording sheets.
申请人：FUJI PHOTO FILM CO LTD
代理机构：Sughrue, Rothwell, Mion, Zinn and Macpeak 更多信息请下载全文后查看
phenomenon
