公开(公告)号：DE3880939T2

公开(公告)日：1993-09-23

申请号：DE3880939

申请日：1988-09-13

Applicant: MITSUI TOATSU CHEMICALS

Inventor： TAKUMA KEISUKE ,  KURODA SIZUO ,  OYAMA TSUKASA ,  AIGA HIROSHI

IPC: C09B1/22 ,  C09B1/26 ,  C09B1/58 ,  C09K19/60

Abstract: Dichroic coloring agents which have a blue to blue-violet hue and have not been used to date for liquid crystal displays are disclosed. These coloring agents are represented by the following formula: wherein X is S or NH; R1 is a hydrogen atom, halogen atom, alkyl group or alkoxy group; and R2 is a hydrogen atom, alkyl group, aryl group or aralkyl group.

公开(公告)号：SG116893G

公开(公告)日：1994-01-21

申请号：SG116893

申请日：1993-10-23

Applicant: MITSUI TOATSU CHEMICALS

Inventor： TAKUMA KEISUKE ,  KURODA SIZUO ,  OYAMA TSUKASA ,  AIGA HIROSHI

IPC: C09B1/26 ,  C09B1/58

公开(公告)号：CA1290752C

公开(公告)日：1991-10-15

申请号：CA577340

申请日：1988-09-14

Applicant: MITSUI TOATSU CHEMICALS

Inventor： TAKUMA KEISUKE ,  KURODA SIZUO ,  OYAMA TSUKASA ,  AIGA HIROSHI

IPC: C09B1/22 ,  C09B1/26 ,  C09B1/58 ,  C09K19/60

Abstract: Dichroic coloring agents which have a blue to blue-violet hue and have not been used to date for liquid crystal displays are disclosed. These coloring agents are represented by the following formula: wherein X is S or NH; R1 is a hydrogen atom, halogen atom, alkyl group or alkoxy group; and R2 is a hydrogen atom, alkyl group, aryl group or aralkyl group.

公开(公告)号：HK5594A

公开(公告)日：1994-01-28

申请号：HK5594

申请日：1994-01-20

Applicant: MITSUI TOATSU CHEMICALS

Inventor： TAKUMA KEISUKE ,  KURODA SIZUO ,  OYAMA TSUKASA ,  AIGA HIROSHI

IPC: C09B1/22 ,  C09B1/26 ,  C09B1/58 ,  C09K19/60

Abstract: Dichroic coloring agents which have a blue to blue-violet hue and have not been used to date for liquid crystal displays are disclosed. These coloring agents are represented by the following formula: wherein X is S or NH; R1 is a hydrogen atom, halogen atom, alkyl group or alkoxy group; and R2 is a hydrogen atom, alkyl group, aryl group or aralkyl group.

公开(公告)号：DE3880939D1

公开(公告)日：1993-06-17

申请号：DE3880939

申请日：1988-09-13

Applicant: MITSUI TOATSU CHEMICALS

Inventor： TAKUMA KEISUKE ,  KURODA SIZUO ,  OYAMA TSUKASA ,  AIGA HIROSHI

IPC: C09B1/22 ,  C09B1/26 ,  C09B1/58 ,  C09K19/60

Abstract: Dichroic coloring agents which have a blue to blue-violet hue and have not been used to date for liquid crystal displays are disclosed. These coloring agents are represented by the following formula: wherein X is S or NH; R1 is a hydrogen atom, halogen atom, alkyl group or alkoxy group; and R2 is a hydrogen atom, alkyl group, aryl group or aralkyl group.