US4343493A
Expired / Lapsed
US
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Duplicating and marking systems
Assignee: HD ACQUISITION CORP A CORP OF DE
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Filing: 1980-08-29
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Granted: 1982-08-10
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Expires: 2000-08-29
Abstract
Abstract This invention relates to 3,7-bis(disubstituted aminophenyl- or indolyl)-3,7-bis(diphenylamino)pyromellitides, 3,5-bis(disubstituted aminophenyl- or indolyl)-3,5-bis(diphenylamino)pyromellitides and mixtures thereof useful as color formers, particularly in carbonless duplicating and thermal marking systems, which are prepared by the interaction of 2,5-bis(disubstituted aminophenyl- or indolyl)carbonyl-1,4-benzenedicarboxylic acids or 2,4-bis(disubstituted aminophenyl- or indolyl)carbonyl-1,5-benzenedicarboxylic acids and mixtures thereof with diphenylamines.
Inventors
- 👤 Paul J. Schmidt
- 👤 William M. Hung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:09
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/30; B41M5/323; B41M5/327; B41M5/124; B41M5/132; B41M5/136; B41M5/145; C; C07; C07D; C07D209/00; C07D209/02; C07D209/04; C07D209/10; C07D209/12; C07D493/00; C07D493/02; C07D493/04; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
43 words
A pressure-sensitive carbonless duplicating system or thermal marking system comprising a support sheet coated with a layer containing as a colorforming substance a compound selected from the group consisting of 3,7-bis(Y)-3,7-bis[N-(R, R o -phenyl)-N-(R 1 , R 2 -phenyl)amino]pyromellitide having the formula ##STR16##
Claim 2
Dependent Claim
43 words
A pressure-sensitive carbonless duplicating system or thermal marking system comprising a support sheet coated with a layer containing as a colorforming substance a compound selected from the group consisting of 3,7-bis(Y)-3,7-bis[N-(R, R o -phenyl)-N-(R 1 , R 2 -phenyl)amino]pyromellitide having the formula ##STR16##
Claim 3
Dependent Claim
239 words
5-bis(Y)-3,5-bis[N-(R, R o -phenyl)-N-(R 1 , R 2 -phenyl)amino]pyromellitide having the formula ##STR17## and mixtures thereof wherein: R, R o , R 1 and R 2 are the same or different and are selected from the group consisting of hydrogen, halo, hydroxyl, non-tertiary C 1 to C 4 alkoxy, non-tertiary C 1 to C 9 alkyl, COOZ and NZ 1 Z 2 where Z and Z 1 are hydrogen or non-tertiary C 1 to C 4 alkyl and Z 2 is hydrogen, non-tertiary C 1 to C 4 alkyl, C 5 to C 7 cycloalkyl, C 1 to C 4 alkanoyl, phenylsulfonyl or phenylsulfonyl substituted by non-tertiary C 1 to C 4 alkyl; Y is a radical selected from the group consisting of ##STR18## in which R 3 and R 4 are the same or different and are selected from the group consisting of non-tertiary C 1 to C 4 alkyl, benzyl, and benzyl substituted by one or two of halo, C 1 to C 4 alkyl, C 1 to C 4 alkoxy or nitro; R 5 is selected from the group consisting of hydrogen, non-tertiary C 1 to C 4 alkyl, halo and non-tertiary C 1 to C 4 alkoxy; R 6 is selected from the group consisting of hydrogen and non-tertiary C 1 to C 12 alkyl; and R 7 is selected from the group consisting of hydrogen, non-tertiary C 1 to C 4 alkyl and phenyl.
Claim 4
Dependent Claim
239 words
5-bis(Y)-3,5-bis[N-(R, R o -phenyl)-N-(R 1 , R 2 -phenyl)amino]pyromellitide having the formula ##STR17## and mixtures thereof wherein: R, R o , R 1 and R 2 are the same or different and are selected from the group consisting of hydrogen, halo, hydroxyl, non-tertiary C 1 to C 4 alkoxy, non-tertiary C 1 to C 9 alkyl, COOZ and NZ 1 Z 2 where Z and Z 1 are hydrogen or non-tertiary C 1 to C 4 alkyl and Z 2 is hydrogen, non-tertiary C 1 to C 4 alkyl, C 5 to C 7 cycloalkyl, C 1 to C 4 alkanoyl, phenylsulfonyl or phenylsulfonyl substituted by non-tertiary C 1 to C 4 alkyl; Y is a radical selected from the group consisting of ##STR18## in which R 3 and R 4 are the same or different and are selected from the group consisting of non-tertiary C 1 to C 4 alkyl, benzyl, and benzyl substituted by one or two of halo, C 1 to C 4 alkyl, C 1 to C 4 alkoxy or nitro; R 5 is selected from the group consisting of hydrogen, non-tertiary C 1 to C 4 alkyl, halo and non-tertiary C 1 to C 4 alkoxy; R 6 is selected from the group consisting of hydrogen and non-tertiary C 1 to C 12 alkyl; and R 7 is selected from the group consisting of hydrogen, non-tertiary C 1 to C 4 alkyl and phenyl.
Claim 5
Dependent Claim
95 words
A pressure-sensitive carbonless duplicating system or thermal marking system according to claim 1 comprising a support sheet coated with a layer containing as a color-forming substance a compound selected from the group consisting of 3,7-bis(1-R 6 -2-R 7 -indol-3-yl)-3,7-bis[N-(R, R o -phenyl)-N(R 1 , R 2 -phenyl)amino]pyromellitide and 3,5-bis(1-R 6 -2-R 7 indol-3-yl)-3,5-bis[N-(R, R o -phenyl)-N-(R 1 ,R 2 -phenyl)amino]pyromellitide and mixtures thereof according to claim 1 wherein R, R o , R 1 , R 2 , R 6 , R 7 and Y each have the same respective meanings given in claim 1.
Claim 6
Dependent Claim
32 words
A pressure-sensitive carbonless duplicating system or thermal marking system according to claim 2 containing as a color-forming substance a compound selected from the group consisting of 3,7-bis(1-ethyl-2-methylindol-3-yl)-3,7-bis(diphenylamino)pyromellitide and 3,5-bis(1-ethyl-2-methylindol-3-yl)-3,5-bis(diphenylamino)pyromellitide and mixtures thereof.
Claim 7
Dependent Claim
31 words
A pressure-sensitive carbonless duplicating system according to claim 1 comprising a support sheet coated on one side with a layer of pressure-rupturable microcapsules containing a liquid solution of the color-forming substance.
Claim 8
Dependent Claim
49 words
A thermal marking system according to claim 1 comprising a support sheet coated on one side with a layer containing a mixture of the color-forming substance and an acidic developer arranged such that application of heat will produce a mark-forming reaction between the color-forming substance and the acidic developer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-08-09 | 1986-02-08 | 1986-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-09 | 1990-02-08 | 1990-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-09 | 1994-02-08 | 1994-08-10 | $7700.00 | Window Closed / Lapsed |