公开(公告)号：US3833566A

公开(公告)日：1974-09-03

申请号：US24829672

申请日：1972-04-27

申请人： EASTMAN KODAK CO

发明人： JEFFREYS R ,  MELLOWS S

IPC分类号： C09B23/01 ,  C09B23/12 ,  C09B23/16 ,  G03C1/12 ,  C09B23/00

CPC分类号： C09B23/164 ,  C09B23/0041 ,  C09B23/12 ,  G03C1/12

摘要： NOVEL METHINE DYES ARE PROVIDED IN WHICH ONE TERMINAL CARBON ATOM OF THE METHINE CHAIN OF THE DYE HAS TWO GROUPS ATTACHED THERETO, SAID GGROUPS BEING SELECTED FROM A DIALKYLAMINO GROUP, A DIARYLAMINO GROUP, AN ALKYLARYLAMINO GROUP, A MORPHOLINO GROUP, A THIOMORPHOLINO GROUP AND A PIPERIDINO GROUP; AND, THE OTHER TERMINAL ATOM OF THE METHINE CHAIN OF SAID DYE IS ATTACHED TO A HETEROCYCLIC NUCLEUS OF THE TYPE USED IN METHINE DYES. THE PREPARATION OF SUCH DYES, AND PHOTOGRAPHIC EMULSIONS CONTAINING THEM, ARE ALSO PROVIDED HEREIN.