公开(公告)号：US3730754A

公开(公告)日：1973-05-01

申请号：US3730754D

申请日：1971-10-01

申请人： NCR CO

发明人： FARBER S ,  WRIGHT A

IPC分类号： B41M5/145 ,  C09B11/24 ,  B41M5/16

CPC分类号： C09B11/24 ,  B41M5/1455

摘要： A PRESSURE-SENSITIVE RECORD UNIT AND A MARK-FORMING UNIT ARE DISCLOSED WHICH EMPLOY A CHROMOGENIC MATERIAL OF NORMALLY COLORLESS FORM HAVING A STRUCTURAL FORMULA:

4'',5'',6'',7''-TETRA(CL-),3''-(O=),9-((R)2-N-)SPIRO(12H-BENZO-

(A)XANTHENE-12,1''-PHTHALAN), AND 4'',5'',6'',7''-TETRA(CL-),

3''-(O=),9,4-DI((R)2-N-)SPIRO(12H-BENZO(A)XANTHENE-12,1''-

PHTHALAN)

WHEREIN EACH R IS HYDROGEN OR AN ALKYL RADICAL HAVING 1 TO 4 CARBON ATOMS.

公开(公告)号：US3736337A

公开(公告)日：1973-05-29

申请号：US3736337D

申请日：1971-04-27

申请人： NCR CO

发明人： FARBER S

IPC分类号： B41M5/145 ,  C07D307/885 ,  C07D491/048 ,  C09B11/00 ,  C09B11/26 ,  C07D5/32 ,  C07D27/22 ,  C07D27/56

CPC分类号： C07D307/885

摘要： TETRAHALOGENATED CHROMOGENIC COMPOUNDS ARE DISCLOSED. ONE SUCH COMPOUND IS 3-(P-DIETHYLAMINOPHENYL)3-(1,2-DIMETHYLINDOL - 3 - YL)-4,5,6,7-TETRACHLOROPHTHALIDE. THESE COLORLESS, BUT COLORABLE DYES ARE EMPLOYED IN PRESSURE-SENSITIVE RECORD MATERIAL AND MARK-FORMING MANIFOLD SYSTEMS. THE TETRAHALOGENATED COMPOUNDS OF THIS INVENTION DEMONSTRATE GOOD FADE RESISTANCE BOTH IN RESPECT TO REFLECTIVE INTENSITY AND QUANTITY OF COLOR PRESENT.