US3969346A
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Naphtholactamcarbinols color formers, their manufacture and use in pressure-sensitive or thermoreactive recording material
Assignee: Novartis Corp
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Filing: 1973-07-03
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Granted: 1976-07-13
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Expires: 1993-07-03
Abstract
Abstract The present invention relates to naphtholactamcarbinols, which may be used as color formers in pressure-sensitive or thermoreactive recording material.
Inventors
- 👤 Stefan Koller
- 👤 Jean Claude Petitpierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:45
CPC Classifications
C; C09; C09B; C09B57/00; C09B57/06; B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/136; B41M5/26; B41M5/30; B41M5/323; C07; C07D; C07D209/00; C07D209/56; C07D209/80; C07D209/90; C07D209/92
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
156 words
Color former of the formula ##EQU8## in which R is alkyl with 1 to 6 carbon atoms, cyclohexyl, phenyl, benzyl, 2-phenylethyl or alkyl with 1 to 6 carbon atoms substituted by halogen or alkoxy with 1 to 4 carbon atoms, Z is hydrogen or alkyl with 1 to 4 carbon atoms, Y is alkyl with 1 to 4 carbon atoms, nitrile or hydrogen, n is 1 or 2, Q is a radical of the formula ##EQU9## wherein R 4 is phenyl, tolyl, benzyl, 2-phenylethyl or alkyl or alkenyl with 1 to 18 carbon atoms or such a radical further substituted by chlorine, nitrile, carbalkoxy with 1 to 4 carbon atoms or alkylcarbonamido with 1 to 4 carbon atoms or R 4 is hydrogen; R 5 is hydrogen, phenyl or alkyl with 1 to 4 carbon atoms and R 6 is alkyl with 1 to 4 carbon atoms, alkoxy with 1 to 4 carbon atoms or halogen.
Claim 2
Dependent Claim
156 words
Color former of the formula ##EQU8## in which R is alkyl with 1 to 6 carbon atoms, cyclohexyl, phenyl, benzyl, 2-phenylethyl or alkyl with 1 to 6 carbon atoms substituted by halogen or alkoxy with 1 to 4 carbon atoms, Z is hydrogen or alkyl with 1 to 4 carbon atoms, Y is alkyl with 1 to 4 carbon atoms, nitrile or hydrogen, n is 1 or 2, Q is a radical of the formula ##EQU9## wherein R 4 is phenyl, tolyl, benzyl, 2-phenylethyl or alkyl or alkenyl with 1 to 18 carbon atoms or such a radical further substituted by chlorine, nitrile, carbalkoxy with 1 to 4 carbon atoms or alkylcarbonamido with 1 to 4 carbon atoms or R 4 is hydrogen; R 5 is hydrogen, phenyl or alkyl with 1 to 4 carbon atoms and R 6 is alkyl with 1 to 4 carbon atoms, alkoxy with 1 to 4 carbon atoms or halogen.
Claim 3
Dependent Claim
42 words
Color former of claim 1, of the formula ##EQU10## wherein R is alkyl with 1 to 6 carbon atoms, cyclohexyl, phenyl, benzyl, 2-phenylethyl or alkyl with 1 to 6 carbon atoms substituted by halogen or alkoxy with 1 to 4 carbon atoms.
Claim 4
Dependent Claim
30 words
Color former of claim 1, wherein Q is a radical of the formula ##EQU11## wherein R 4 , R 5 and R 6 have the meaning defined in claim 1.
Claim 5
Dependent Claim
26 words
Color former of claim 1, of the formula ##EQU12## wherein R, R 4 , R 5 and R 6 have the meaning defined in claim 1.
Claim 6
Dependent Claim
31 words
The colour former of claim 1, wherein R is ethyl, R 4 is methyl, R 5 is phenyl, R 6 is hydrogen, and rings A and B are not further substituted.
Claim 7
Dependent Claim
129 words
Process for the manufacture of a colorless color former of the formula ##EQU13## wherein R is alkyl with 1 to 6 carbon atoms, cyclohexyl, phenyl, benzyl, 2-phenylethyl or alkyl with 1 to 6 carbon atoms substituted by halogen or alkoxy with 1 to 4 carbon atoms, Z is hydrogen or alkyl with 1 to 4 carbon atoms, Y is alkyl with 1 to 4 carbon atoms, nitrile or hydrogen, n is 1 or 2, Q is N,N-disubstituted aniline, indole, naphthol-ether, phenol-ether, phenylpyrazoline or tetrahydrocarbazole, wherein a naphtholactam dyestuff of the formula ##EQU14## wherein X is an anion, is treated with a solution of alkali metal hydroxide or alkali metal alkoxide in an amount sufficient to convert said dyestuff into said colorless color former, and recovering said colorless color former.
Claim 8
Dependent Claim
129 words
Process for the manufacture of a colorless color former of the formula ##EQU13## wherein R is alkyl with 1 to 6 carbon atoms, cyclohexyl, phenyl, benzyl, 2-phenylethyl or alkyl with 1 to 6 carbon atoms substituted by halogen or alkoxy with 1 to 4 carbon atoms, Z is hydrogen or alkyl with 1 to 4 carbon atoms, Y is alkyl with 1 to 4 carbon atoms, nitrile or hydrogen, n is 1 or 2, Q is N,N-disubstituted aniline, indole, naphthol-ether, phenol-ether, phenylpyrazoline or tetrahydrocarbazole, wherein a naphtholactam dyestuff of the formula ##EQU14## wherein X is an anion, is treated with a solution of alkali metal hydroxide or alkali metal alkoxide in an amount sufficient to convert said dyestuff into said colorless color former, and recovering said colorless color former.
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) | 1979-07-13 | 1980-01-12 | 1980-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-13 | 1984-01-12 | 1984-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-13 | 1988-01-12 | 1988-07-13 | $7700.00 | Window Closed / Lapsed |