US4025090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-sensitive or heat-sensitive recording material
Assignee: Novartis Corp
•
Filing: 1976-09-09
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Granted: 1977-05-24
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Expires: 1996-09-09
Abstract
Abstract A pressure-sensitive or heat-sensitive recording material which contains as color former at least one tetrahydroquinoline compound of the general formula ##STR1## wherein EACH OF R 1 and R 2 represents lower alkyl, cycloalkyl or benzyl or together represent alkylene, and X represents alkyl of at most 12 carbon atoms which is unsubstituted or substituted by halogen, hydroxyl, cyano, lower alkoxy or lower alkoxycarbonyl, or benzyl which is unsubstituted or substituted by halogen, nitro, lower alkyl or lower alkoxy, And the rings A can be substituted by halogen, nitro, cyano, trifluoromethyl, lower alkyl, lower alkoxy, lower alkoxycarbonyl, phenyloxy, amino, lower alkylamino or N-lower alkylcarbonylamino.
Inventors
- 👤 Jean-Claude Petitpierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:34
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/136; B41M5/26; B41M5/30; B41M5/323; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10T; Y10T428/00; Y10T428/25
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
103 words
A pressure-sensitive or heat-sensitive recording material which contains as colour former at least one tetrahydroquinoline compound of the formula ##STR8## wherein each of R 1 and R 2 represents lower alkyl, cycloalkyl or benzyl or together represent alkylene, and X represents alkyl of at most 12 carbon atoms which is unsubstituted or substituted by halogen, hydroxyl, cyano, lower alkoxy or lower alkoxycarbonyl, or benzyl which is unsubstituted or substituted by halogen, nitro, lower alkyl or lower alkoxy, and the rings A are unsubstituted or substituted by halogen, nitro, cyano, trifluoromethyl, lower alkyl, lower alkoxy, lower alkoxycarbonyl, phenyloxy, amino, lower alkylamino or N-lower alkylcarbonylamino.
Claim 2
Dependent Claim
103 words
A pressure-sensitive or heat-sensitive recording material which contains as colour former at least one tetrahydroquinoline compound of the formula ##STR8## wherein each of R 1 and R 2 represents lower alkyl, cycloalkyl or benzyl or together represent alkylene, and X represents alkyl of at most 12 carbon atoms which is unsubstituted or substituted by halogen, hydroxyl, cyano, lower alkoxy or lower alkoxycarbonyl, or benzyl which is unsubstituted or substituted by halogen, nitro, lower alkyl or lower alkoxy, and the rings A are unsubstituted or substituted by halogen, nitro, cyano, trifluoromethyl, lower alkyl, lower alkoxy, lower alkoxycarbonyl, phenyloxy, amino, lower alkylamino or N-lower alkylcarbonylamino.
Claim 3
Dependent Claim
30 words
A recording material according to claim 1, wherein the colour former is a tetrahydroquinoline compound of the formula (1), wherein each of R 1 and R 2 represents lower alkyl.
Claim 4
Dependent Claim
31 words
A recording material according to claim 1, wherein the colour former is a tetrahydroquinoline compound of the formula (1), wherein X represents alkyl of 1 to 8 carbon atoms or benzyl.
Claim 5
Dependent Claim
32 words
A recording material according to claim 1, wherein the colour former is a tetrahydroquinoline compound of the formula (1), wherein the rings A are unsubstituted or substituted by halogen or lower alkoxy.
Claim 6
Dependent Claim
50 words
A recording material according to claim 1, wherein the colour former is a tetrahydroquinoline compound of the formula ##STR9## wherein each of R 3 and R 4 represents lower alkyl, Y represents hydrogen, halogen or lower alkoxy, and X 1 represents alkyl of 1 to 8 carbon atoms or benzyl.
Claim 7
Dependent Claim
37 words
A recording material according to claim 5, wherein the colour former is a tetrahydroquinoline compound of the formula (2), wherein each of R 3 and R 4 represents methyl and X 1 represents methyl, ethyl or benzyl.
Claim 8
Dependent Claim
33 words
A recording material according to claim 1, wherein the colour former is a tetrahydroquinoline compound of the formula ##STR10## wherein Y 1 represents hydrogen or chlorine and X 2 represents methyl or ethyl.
Claim 9
Dependent Claim
10 words
A recording material according to claim 1 which is pressure-sensitive.
Claim 10
Dependent Claim
31 words
A pressure-sensitive recording material according to claim 8, which contains at least one tetrahydroquinoline compound of claim 1 as colour former, dissolved in an organic solvent, and an electron acceptor substance.
Claim 11
Dependent Claim
23 words
A pressure-sensitive recording material according to claim 9, wherein the solution of the tetrahydroquinoline compound in an organic solvent is contained in microcapsules.
Claim 12
Dependent Claim
22 words
A pressure-sensitive recording material according to claim 9, wherein the electron acceptor substance is attapulgite clay, silton clay, or a phenolformaldehyde resin.
Claim 13
Dependent Claim
49 words
A pressure-sensitive recording material according to claim 10, wherein the encapsulated tetrahydroquinoline compound is applied in the form of a layer to the reverse side of a transfer sheet and the electron acceptor substance is applied in the form of a layer to the face of the receiver sheet.
Claim 14
Dependent Claim
21 words
A pressure-sensitive recording material according to claim 8, which contains the tetrahydroquinoline compound together with one or more other colour formers.
Claim 15
Dependent Claim
36 words
A heat-sensitive recording material according to claim 1 which contains in at least one layer at least one colour former, one electron acceptor and one binder, wherein the colour former has the formula of claim 1.
Claim 16
Dependent Claim
28 words
A heat-sensitive recording material according to claim 14, wherein the colour developer is attapulgite clay, silton clay, a phenolic compound, a phenolic resin or a solid organic acid.
References Cited (Backward Citations)
US3449335A
Cited
DE2157094A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-23 | 1980-11-22 | 1981-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-23 | 1984-11-22 | 1985-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-23 | 1988-11-22 | 1989-05-24 | $7700.00 | Window Closed / Lapsed |