公开(公告)号：EP4004121A1

公开(公告)日：2022-06-01

申请号：EP20771763.8

申请日：2020-07-31

申请人： Thermographic Measurements Ltd

发明人： SHIVKUMAR, Bagavant ,  SHIVKUMAR, Uma ,  MARREC, Philippe

IPC分类号： C09B57/00 ,  C09B67/22 ,  C09B67/46 ,  C09B67/42 ,  C09D11/50

公开(公告)号：EP3349991A1

公开(公告)日：2018-07-25

申请号：EP16788424.6

申请日：2016-09-05

申请人： Thermographic Measurements Ltd

发明人： SHIVKUMAR, Bagavant ,  MARREC, Philippe

IPC分类号： B41M5/30 ,  C09B67/02 ,  C09D11/50

CPC分类号： C09D11/50 ,  C07C69/78 ,  C09B57/00 ,  C09B67/0097 ,  C09D5/004 ,  C09D5/26 ,  C09D11/037 ,  C09D11/17 ,  C09K9/02 ,  C09K2211/1007 ,  G01N21/78

摘要： A compound of formula: wherein R1, R2 are selected from an alkyl, alkenyl, alkoxy, aryl and alkylene aryl group having from 6-22 carbon atoms; X­1, X2 selected from -OC(O)-, -CO2- and O; R3, R4 and R5 are selected from hydrogen, alkyl, cycloalkyl, alkenyl, alkoxy, aryl and alkylene aryl group; R6 is selected from hydrogen, R3, -X1R1, aryl and halogen; Y1, Y2, Y3 and Y4 are selected from hydrogen, R3, -OR3 and halogen; a is 0-4; b is 0 or 1; x and y are independently 0 or 1 provided that where x and y are 0, a is 0 and b is 1 and R6 is -CO2R1; and wherein when a is 0 and b is 1 and R5 or R6 is phenyl, R6 and R5 respectively are not hydrogen or C1-7 alkyl. A thermochromic composition is disclosed, comprising said compound, an electron-donating organic colouring compound and an electron-accepting compound. Further disclosed is a thermochromic microencapsulated pigment and an ink composition for a writing implement. Also disclosed is an indicator comprising a portion of thermochromic composition, pigment or ink in its coloured state and a portion of the same composition, pigment or ink in its discoloured state.

公开(公告)号：EP3349990A1

公开(公告)日：2018-07-25

申请号：EP16774628.8

申请日：2016-09-05

申请人： Thermographic Measurements Ltd

发明人： SHIVKUMAR, Bagavant ,  MARREC, Philippe

IPC分类号： B41M5/30 ,  C09B67/02 ,  C09D11/50

CPC分类号： C09D11/50 ,  C07C69/78 ,  C09B57/00 ,  C09B67/0097 ,  C09D5/004 ,  C09D5/26 ,  C09D11/037 ,  C09D11/17 ,  C09K9/02 ,  C09K2211/1007 ,  G01N21/78

摘要： A compound of formula: wherein R1, R2 are selected from an alkyl, alkenyl, alkoxy, aryl and alkylene aryl group having from 6-22 carbon atoms; X­1, X2 selected from -OC(O)-, -CO2- and O; R3, R4 and R5 are selected from hydrogen, alkyl, cycloalkyl, alkenyl, alkoxy, aryl and alkylene aryl group; R6 is selected from hydrogen, R3, -X1R1, aryl and halogen; Y1, Y2, Y3 and Y4 are selected from hydrogen, R3, -OR3 and halogen; a is 0-4; b is 0 or 1; x and y are independently 0 or 1 provided that where x and y are 0, a is 0 and b is 1 and R6 is -CO2R1; and wherein when a is 0 and b is 1 and R5 or R6 is phenyl, R6 and R5 respectively are not hydrogen or C1-7 alkyl. A thermochromic composition is disclosed, comprising said compound, an electron-donating organic colouring compound and an electron-accepting compound. Further disclosed is a thermochromic microencapsulated pigment and an ink composition for a writing implement. Also disclosed is an indicator comprising a portion of thermochromic composition, pigment or ink in its coloured state and a portion of the same composition, pigment or ink in its discoloured state.

公开(公告)号：EP3344468A1

公开(公告)日：2018-07-11

申请号：EP16774863.1

申请日：2016-09-05

申请人： Thermographic Measurements Ltd

发明人： SHIVKUMAR, Bagavant ,  MARREC, Philippe

IPC分类号： B41M5/30 ,  C09B67/02 ,  C09D11/50

CPC分类号： C09D11/50 ,  C07C69/78 ,  C09B57/00 ,  C09B67/0097 ,  C09D5/004 ,  C09D5/26 ,  C09D11/037 ,  C09D11/17 ,  C09K9/02 ,  C09K2211/1007 ,  G01N21/78

摘要： A compound of formula: wherein R1, R2 are selected from an alkyl, alkenyl, alkoxy, aryl and alkylene aryl group having from 6-22 carbon atoms; X­1, X2 selected from -OC(O)-, -CO2- and O; R3, R4 and R5 are selected from hydrogen, alkyl, cycloalkyl, alkenyl, alkoxy, aryl and alkylene aryl group; R6 is selected from hydrogen, R3, -X1R1, aryl and halogen; Y1, Y2, Y3 and Y4 are selected from hydrogen, R3, -OR3 and halogen; a is 0-4; b is 0 or 1; x and y are independently 0 or 1 provided that where x and y are 0, a is 0 and b is 1 and R6 is -CO2R1; and wherein when a is 0 and b is 1 and R5 or R6 is phenyl, R6 and R5 respectively are not hydrogen or C1-7 alkyl. A thermochromic composition is disclosed, comprising said compound, an electron-donating organic colouring compound and an electron-accepting compound. Further disclosed is a thermochromic microencapsulated pigment and an ink composition for a writing implement. Also disclosed is an indicator comprising a portion of thermochromic composition, pigment or ink in its coloured state and a portion of the same composition, pigment or ink in its discoloured state.