Patent US5690066A successfully refreshed from Google Patents.
Patent US4363503A successfully refreshed from Google Patents.
US4363503A
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US
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Pyridine color formers
Assignee: HD ACQUISITION CORP A CORP OF DE
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Filing: 1981-03-16
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Granted: 1982-12-14
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Expires: 2001-03-16
Abstract
Abstract Novel 4-aryl-or heteroaryl-2,6-bis[(substituted-amino)phenyl]pyridines which are useful as color formers in pressure-sensitive carbonless duplicating systems and thermal marking systems are prepared by reacting a 2-, 3- or 4-R 1 R 2 N-acetophenone with an aryl or heteroaryl aldehyde in the present of ammonia or an ammonia-releasing agent.
Inventors
- 👤 Paul J. Schmidt
- 👤 William M. Hung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:16
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/36; C07D213/38; B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/136; C07D213/54; C07D213/55; C07D455/00; C07D455/03; C07D455/04; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
161 words
A pressure-sensitive carbonless duplicating system or thermal marking system containing a support sheet coated with a color-forming substance comprising a compound having the formula ##STR10## wherein: R 1 and R 2 are the same or different and are selected from the group consisting of lower-alkyl and benzyl, or NR 1 R 2 is pyrrolidinyl, piperidinyl, or morpholinyl; Z is naphthyl, 9-julolidinyl or a substituent having the formula ##STR11## wherein R 3 , R 4 , R 7 and R 8 are hydrogen or non-tertiary lower-alkyl; R 5 is hydrogen, phenyl or non-tertiary lower-alkyl; R 6 is hydrogen, non-tertiary lower-alkyl or non-tertiary lower-alkoxy; X is O or S; Y 1 and Y 2 are the same or different and are selected from the group consisting of hydrogen, lower-alkyl, lower-alkoxy, halo, nitro, lower-alkoxycarbonyl, phenyl or NR 9 R 10 ; R 9 is lower-alkyl or benzyl; R 10 is lower-alkyl, benzyl, cyano-lower-alkyl, or NR 9 R 10 is pyrrolidinyl, piperidinyl, morpholinyl or isoindolinyl.
Claim 2
Dependent Claim
161 words
A pressure-sensitive carbonless duplicating system or thermal marking system containing a support sheet coated with a color-forming substance comprising a compound having the formula ##STR10## wherein: R 1 and R 2 are the same or different and are selected from the group consisting of lower-alkyl and benzyl, or NR 1 R 2 is pyrrolidinyl, piperidinyl, or morpholinyl; Z is naphthyl, 9-julolidinyl or a substituent having the formula ##STR11## wherein R 3 , R 4 , R 7 and R 8 are hydrogen or non-tertiary lower-alkyl; R 5 is hydrogen, phenyl or non-tertiary lower-alkyl; R 6 is hydrogen, non-tertiary lower-alkyl or non-tertiary lower-alkoxy; X is O or S; Y 1 and Y 2 are the same or different and are selected from the group consisting of hydrogen, lower-alkyl, lower-alkoxy, halo, nitro, lower-alkoxycarbonyl, phenyl or NR 9 R 10 ; R 9 is lower-alkyl or benzyl; R 10 is lower-alkyl, benzyl, cyano-lower-alkyl, or NR 9 R 10 is pyrrolidinyl, piperidinyl, morpholinyl or isoindolinyl.
Claim 3
Dependent Claim
79 words
A pressure-sensitive carbonless duplicating system or a thermal marking system according to claim 1 wherein Z is a substituent having the formula ##STR12## wherein Y 1 and Y 2 are the same or different and are selected from the group consisting of hydrogen, lower-alkyl, lower-alkoxy, halo, nitro, lower-alkoxycarbonyl, phenyl or NR 9 R 10 ; R 9 is lower-alkyl or benzyl; R 10 is lower-alkyl, benzyl or cyano-lower-alkyl, or NR 9 R 10 is pyrrolidinyl, piperidinyl, morpholinyl or isoindolinyl.
Claim 4
Dependent Claim
47 words
A pressure-sensitive carbonless duplicating system or thermal marking system according to claim 2 wherein R 1 and R 2 are each lower-alkyl and at least one of Y 1 and Y 2 is NR 9 R 10 in which R 9 and R 10 are each lower-alkyl.
Claim 5
Dependent Claim
45 words
A pressure-sensitive carbonless duplicating system or thermal marking system according to claim 2 wherein R 1 and R 2 are each lower-alkyl and Y 1 and Y 2 are the same or different and are selected from the group consisting of hydrogen, lower-alkyl and lower-alkoxy.
Claim 6
Dependent Claim
175 words
A pressure-sensitive carbonless duplicating system or thermal marking system containing a support sheet coated with a color-forming substance comprising a blue or green and a red or orange color former in combination with a compound having the formula ##STR13## wherein: R 1 and R 2 are the same or different and are selected from the group consisting of lower-alkyl and benzyl, or NR 1 R 2 is pyrrolidinyl, piperidinyl, or morpholinyl; Z is naphthyl, 9-julolidinyl or a substituent having the formula ##STR14## wherein R 3 , R 4 , R 7 and R 8 are hydrogen or non-tertiary lower-alkyl; R 5 is hydrogen, phenyl or non-tertiary lower-alkyl; R 6 is hydrogen, non-teritary lower-alkyl or non-tertiary lower-alkoxy; X is O or S; Y 1 and Y 2 are the same or different and are selected from the group consisting of hydrogen, lower-alkyl, lower-alkoxy, halo, nitro, lower-alkoxycarbonyl, phenyl or NR 9 R 10 ; R 9 is lower-alkyl or benzyl; R 10 is lower-alkyl, benzyl, cyano-lower-alkyl, or NR 9 R 10 is pyrrolidinyl, piperidinyl, morpholinyl or isoindolinyl.
Claim 7
Dependent Claim
175 words
A pressure-sensitive carbonless duplicating system or thermal marking system containing a support sheet coated with a color-forming substance comprising a blue or green and a red or orange color former in combination with a compound having the formula ##STR13## wherein: R 1 and R 2 are the same or different and are selected from the group consisting of lower-alkyl and benzyl, or NR 1 R 2 is pyrrolidinyl, piperidinyl, or morpholinyl; Z is naphthyl, 9-julolidinyl or a substituent having the formula ##STR14## wherein R 3 , R 4 , R 7 and R 8 are hydrogen or non-tertiary lower-alkyl; R 5 is hydrogen, phenyl or non-tertiary lower-alkyl; R 6 is hydrogen, non-teritary lower-alkyl or non-tertiary lower-alkoxy; X is O or S; Y 1 and Y 2 are the same or different and are selected from the group consisting of hydrogen, lower-alkyl, lower-alkoxy, halo, nitro, lower-alkoxycarbonyl, phenyl or NR 9 R 10 ; R 9 is lower-alkyl or benzyl; R 10 is lower-alkyl, benzyl, cyano-lower-alkyl, or NR 9 R 10 is pyrrolidinyl, piperidinyl, morpholinyl or isoindolinyl.
References Cited (Backward Citations)
US3985376A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-12-13 | 1986-06-14 | 1986-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-13 | 1990-06-14 | 1990-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-13 | 1994-06-14 | 1994-12-14 | $7700.00 | Window Closed / Lapsed |