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US4482378A
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Color developers and thermographic record compositions containing them
Assignee: Aussedat Rey SA
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Filing: 1982-06-15
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Granted: 1984-11-13
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Expires: 2002-06-15
Abstract
Abstract The present invention relates to thermographic record compositions and to novel color developers for thermographic compositions consisting of: the compounds of formula: ##STR1## in which R represents: H, alkyl, NO 2 , halogen, aryl, NH 2 , OH, COOH, HSO 3 , NR 1 R 2 , COOR 3 , OR 4 (R 1 , R 2 , R 3 , R 4 =alkyl or aryl), X represents H or a group possessing a labile H capable of forming a stable anion by loss of a proton H + , or their salts of formula, when X=H: ##STR2## in which R and n are as defined hereinabove and M + represents a metal cation. The invention is more particularly applicable to supports for recording data.
Inventors
- 👤 Claude R. Riou
- 👤 Jean F. Fayard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:00
CPC Classifications
C; C07; C07D; C07D249/00; C07D249/16; C07D249/18; B; B41; B41M; B41M5/00; B41M5/26; B41M5/30; B41M5/333; B41M5/3333; B41M5/3335
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
140 words
A thermographic composition comprising a color former and a color developer, wherein said color developer comprises a compound of the formula: ##STR13## wherein R is selected from the group consisting of H, alkyl, NO 2 , halogen, aryl, NH 2 , OH, COOH, HSO 3 , NR 1 R 2 , COOR 3 , and OR 4 , wherein R 1 , R 2 , R 3 , and R 4 are selected from the group consisting of alkyl and aryl, wherein n is an integer of from 0 to 4, and wherein X is selected from the group consisting of H, a group possessing a labile H capable of forming a stable anion by loss of a proton H + , and their salts of formula, when X is H: ##STR14## in which M + represents a metal cation.
Claim 2
Dependent Claim
140 words
A thermographic composition comprising a color former and a color developer, wherein said color developer comprises a compound of the formula: ##STR13## wherein R is selected from the group consisting of H, alkyl, NO 2 , halogen, aryl, NH 2 , OH, COOH, HSO 3 , NR 1 R 2 , COOR 3 , and OR 4 , wherein R 1 , R 2 , R 3 , and R 4 are selected from the group consisting of alkyl and aryl, wherein n is an integer of from 0 to 4, and wherein X is selected from the group consisting of H, a group possessing a labile H capable of forming a stable anion by loss of a proton H + , and their salts of formula, when X is H: ##STR14## in which M + represents a metal cation.
Claim 3
Dependent Claim
36 words
A thermographic composition according to claim 1, wherein X is selected from the group consisting of H, --OH, (CH 2 ) m --OH in which m is an integer of from 1 to 10, and ##STR15##
Claim 4
Dependent Claim
13 words
A thermographic composition according to claim 1 or 2, wherein X is H.
Claim 5
Dependent Claim
25 words
A thermographic composition according to claims 1 or 2, wherein the color developer is selected from the group consisting of benzotriazole, methyl-6-benzotriazole, chloro-5-benzotriazole, and dimethyl-5,6-benzotriazole-1H-monohydrate.
Claim 6
Dependent Claim
22 words
A thermographic composition according to claim 1, wherein R is selected from the group consisting of H, lower alkyl, halogen, and nitro.
Claim 7
Dependent Claim
25 words
A thermographic composition according to claim 1, wherein M is selected from the group consisting of Cu, Cd, Co, Fe (II), Ni, Mn and Zn.
Claim 8
Dependent Claim
35 words
A thermographic composition according to claim 1, wherein the color former is selected from the group consisting of triphenyl methane colorant lactones, fluorans, phthalides, triaryl methane leuco-colorants, spiropyrans, chromenes, chromanes, substituted phenothiazine or phenoxazine leuco-colorants.
Claim 9
Dependent Claim
38 words
A thermographic composition according to claims 1 or 7, further comprising at least one additional component selected from the group consisting of a polymer binder, waxes or compounds with low melting point, a pigmentary filler, and conventional additives.
Claim 10
Dependent Claim
54 words
A thermographic composition according to claims 1 or 7, wherein the color former/developer couples are selected from the group consisting of crystal violet lactone/benzotriazole, black color former/benzotriazole, product T/benzotriazole, wherein the product T corresponds to formula: ##STR16## red color former/benzotriazole, black color former/methyl-6-benzotriazole, color former "COPIKEM XI"/Cl-5-benzotriazole, olive color former/dimethyl-5,6-benzotriazole-1H-monohydrate, and black color former/nitro-5-benzotriazole.
Claim 11
Independent Claim
160 words
A method for providing a thermographic recorded image comprising heating a thermographic composition to a temperature sufficient to cause a color forming reaction between a color former and color developer therein, wherein said color developer comprises a compound of the formula: ##STR17## wherein R is selected from the group consisting of H, alkyl, NO 2 , halogen, aryl, NH 2 , OH, COOH, HSO 3 , NR 1 R 2 , COOR 3 , and OR 4 , wherein R 1 , R 2 , R 3 , and R 4 are selected from the group consisting of alkyl and aryl, wherein n is an integer of from 0 to 4, and wherein X is selected from the group consisting of H, a group possessing a labile H capable of forming a stable anion by loss of a proton H + , and their salts of formula, when X is H: ##STR18## in which M + represents a metal cation.
Claim 12
Independent Claim
160 words
A method for providing a thermographic recorded image comprising heating a thermographic composition to a temperature sufficient to cause a color forming reaction between a color former and color developer therein, wherein said color developer comprises a compound of the formula: ##STR17## wherein R is selected from the group consisting of H, alkyl, NO 2 , halogen, aryl, NH 2 , OH, COOH, HSO 3 , NR 1 R 2 , COOR 3 , and OR 4 , wherein R 1 , R 2 , R 3 , and R 4 are selected from the group consisting of alkyl and aryl, wherein n is an integer of from 0 to 4, and wherein X is selected from the group consisting of H, a group possessing a labile H capable of forming a stable anion by loss of a proton H + , and their salts of formula, when X is H: ##STR18## in which M + represents a metal cation.
Claim 13
Dependent Claim
35 words
A process according to claim 10, wherein X is selected from the group consisting of H, --OH, (CH 2 ) m --OH in which m is an integer of from 1 to 10, and ##STR19##
Claim 14
Dependent Claim
12 words
A process according to claim 10 or 11, wherein X is H.
Claim 15
Dependent Claim
24 words
A process according to claim 10 or 11, wherein the color developer is selected from the group consisting of benzotriazole, methyl-6-benzotriazole, chloro-5-benzotriazole, and dimethyl-5,6-benzotriazole-1H-monohydrate.
Claim 16
Dependent Claim
21 words
A process according to claim 10, wherein R is selected from the group consisting of H, lower alkyl, halogen, and nitro.
Claim 17
Dependent Claim
24 words
A process according to claim 10, wherein M is selected from the group consisting of Cu, Cd, Co, Fe (II), Ni, Mn and Zn.
Claim 18
Dependent Claim
34 words
A process according to claim 10, wherein the color former is selected from the group consisting of triphenyl methane colorant lactones, fluorans, phthalides, triaryl methane leuco-colorants, spiropyrans, chromenes, chromanes, substituted phenothiazine or phenoxazine leuco-colorants.
Claim 19
Dependent Claim
41 words
A process according to claim 10 or 16, wherein the thermographic composition further comprises at least one additional component selected from the group consisting of a polymer binder, waxes or compounds with low melting point, a pigmentary filler, and conventional additives.
Claim 20
Dependent Claim
53 words
A process according to claim 10 or 16, wherein the color former/developer couples are selected from the group consisting of crystal violet lactone/benzotriazole, black color former/benzotriazole, product T/benzotrriazole, wherein the product T corresponds to formula: ##STR20## red color former/benzotriazole, black color former/methyl-6-benzotriazole, color former "COPIKEM XI"/Cl-5-benzotriazole, olive color former/dimethyl-5,6-benzotriazole-1H-monohydrate, and black color former/nitro-5-benzotriazole.
Claim 21
Dependent Claim
116 words
A thermographic composition comprising a color former and a color developer, wherein said color developer comprises a compound of the formula: ##STR21## wherein R is selected from the group consisting of H, alkyl, NO 2 , halogen, aryl, NH 2 , OH, COOH, HSO 3 , NR 1 R 2 , COOR 3 , and OR 4 , wherein R 1 , R 2 , R 3 , and R 4 are selected from the group consisting of alkyl and aryl, wherein n is an integer of from 0 to 4, and wherein X is selected from the group consisting of H and the salts of formula: ##STR22## in which M + represents a metal cation.
Claim 22
Dependent Claim
116 words
A thermographic composition comprising a color former and a color developer, wherein said color developer comprises a compound of the formula: ##STR21## wherein R is selected from the group consisting of H, alkyl, NO 2 , halogen, aryl, NH 2 , OH, COOH, HSO 3 , NR 1 R 2 , COOR 3 , and OR 4 , wherein R 1 , R 2 , R 3 , and R 4 are selected from the group consisting of alkyl and aryl, wherein n is an integer of from 0 to 4, and wherein X is selected from the group consisting of H and the salts of formula: ##STR22## in which M + represents a metal cation.
Claim 23
Dependent Claim
24 words
A thermographic composition according to claim 19, wherein the color developer is selected from the group consisting of benzotriazole, methyl-6-benzotriazole, chloro-5-benzotriazole, and dimethyl-5,6-benzotriazole-1H -monohydrate.
Claim 24
Dependent Claim
52 words
A thermographic composition according to claim 19, wherein the color former/developer couples are selected from the group consisting of crystal violet lactone/benzotriazole, black color former/benzotriazole, product T/benzotriazole, wherein the product T corresponds to formula: ##STR23## red color former/benzotriazole, black color former/methyl-6-benzotriazole, color former "COPIKEM XI"/chloro-5-benzotriazole, olive color former/dimethyl-5,6-benzotriazole-1H-monohydrate, and black color former/nitro-5-benzotriazole.
Claim 25
Independent Claim
139 words
A method for providing a thermographic recorded image comprising the steps of heating a thermographic composition to a temperature sufficient to cause a color forming reaction between a color former and color developer therein, wherein said color developer comprises a compound of the formula: ##STR24## wherein R is selected from the group consisting of H, alkyl, NO 2 , halogen, aryl, NH 2 , OH, COOH, HSO 3 , NR 1 R 2 , COOR 3 , and OR 4 , wherein R 1 , R 2 , R 3 , and R 4 are selected from the group consisting of alkyl and aryl, wherein n is an integer of from 0 to 4, and wherein X is selected from the group consisting of H and the salts of formula: ##STR25## in which M + represents a metal cation.
Claim 26
Independent Claim
139 words
A method for providing a thermographic recorded image comprising the steps of heating a thermographic composition to a temperature sufficient to cause a color forming reaction between a color former and color developer therein, wherein said color developer comprises a compound of the formula: ##STR24## wherein R is selected from the group consisting of H, alkyl, NO 2 , halogen, aryl, NH 2 , OH, COOH, HSO 3 , NR 1 R 2 , COOR 3 , and OR 4 , wherein R 1 , R 2 , R 3 , and R 4 are selected from the group consisting of alkyl and aryl, wherein n is an integer of from 0 to 4, and wherein X is selected from the group consisting of H and the salts of formula: ##STR25## in which M + represents a metal cation.
Claim 27
Dependent Claim
22 words
A process according to claim 22, wherein the color developer is selected from the group consisting of benzotriazole, methyl-6-benzotriazole, chloro-5-benzotriazole, and dimethyl-5,6-benzotriazole-1H-monohydrate.
Claim 28
Dependent Claim
51 words
A process according to claim 22, wherein the color former/developer couples are selected from the group consisting of crystal violet lactone/benzotriazole, black color former/benzotriazole, product T/benzotriazole, wherein the product T corresponds to formula: ##STR26## red color former/benzotriazole, black color former/methyl-6-benzotriazole, color former "COPIKEM XI"/chloro-5-benzotriazole, olive color former/dimethyl-5,6-benzotriazole-1H-monohydrate, and black color former/nitro-5-benzotriazole.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-11-13 | 1988-05-14 | 1988-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-13 | 1992-05-14 | 1992-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-13 | 1996-05-14 | 1996-11-13 | $7700.00 | Window Closed / Lapsed |