US4625027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bisquinazolines useful in color former systems
Assignee: BASF Corp
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Filing: 1983-10-14
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Granted: 1986-11-25
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Expires: 2003-10-14
Abstract
Abstract Chromogenic bisquinazolines of the formula ##STR1## wherein Q is the direct bond or an aliphatic or cycloaliphatic hydrocarbon radical, or is --CO--, --S-- or --SO 2 --, and Y is the radical of a couplable compound, in particular an N-substituted 4-aminophenyl radical or a hydrogenated quinoline radical, and the rings A, B and D are unsubstituted or substituted by cyano, nitro, halogen, lower alkyl, phenyl, benzyl, lower alkoxy or lower alkoxycarbonyl. These compounds are particularly suitable color formers for pressure-sensitive or heat-sensitive recording materials and produce intense yellow or orange color of excellent fastness to light and, in particular, sublimation.
Inventors
- 👤 Rudolf Zink
- 👤 Ian J. Fletcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:01
CPC Classifications
C; C07; C07D; C07D401/00; C07D401/02; C07D401/04; B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/136; B41M5/26; B41M5/30; B41M5/323; C07D239/00; C07D239/70; C07D239/72; C07D239/86; C07D239/88; C07D239/91; C07D403/00; C07D403/02; C07D403/04; C07D413/00; C07D413/02; C07D413/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
85 words
A bisquinazoline of the formula ##STR36## wherein Q 2 is straight chain or branched alkylene or alkylidene each of at most 4 carbon atoms, or is cyclohexylidene, X 7 and X 8 are each lower alkyl, β-cyanoethyl, benzyl or phenyl, or --NX 7 X 8 is piperidino, X 9 is hydrogen, methyl, methoxy or ethoxy, W is hydrogen, halogen, methyl or methoxy and the rings B 2 and D 2 are unsubstituted or substituted by one or two substituents selected from methyl, methoxy and tert-butyl.
Claim 2
Dependent Claim
85 words
A bisquinazoline of the formula ##STR36## wherein Q 2 is straight chain or branched alkylene or alkylidene each of at most 4 carbon atoms, or is cyclohexylidene, X 7 and X 8 are each lower alkyl, β-cyanoethyl, benzyl or phenyl, or --NX 7 X 8 is piperidino, X 9 is hydrogen, methyl, methoxy or ethoxy, W is hydrogen, halogen, methyl or methoxy and the rings B 2 and D 2 are unsubstituted or substituted by one or two substituents selected from methyl, methoxy and tert-butyl.
Claim 3
Dependent Claim
24 words
A bisquinazoline according to claim 15 wherein each of the rings B 2 and D 2 is unsubstituted or substituted by methyl or tert.butyl.
Claim 4
Dependent Claim
84 words
A bisquinazoline of the formula ##STR37## wherein Q 2 is straight chain or branched alkylene or alkylidene each containing at most 4 carbon atoms, Z 2 is C 1 -C 8 alkyl, β-cyanoethyl or benzyl, T 3 , V 5 and V 6 are each lower alkyl, T 4 is hydrogen or methyl, and W is hydrogen, halogen, methyl or methoxy, and the rings B 2 and D 2 are unsubstituted or substituted by one or two substituents selected from methyl, methoxy and tert-butyl.
Claim 5
Dependent Claim
84 words
A bisquinazoline of the formula ##STR37## wherein Q 2 is straight chain or branched alkylene or alkylidene each containing at most 4 carbon atoms, Z 2 is C 1 -C 8 alkyl, β-cyanoethyl or benzyl, T 3 , V 5 and V 6 are each lower alkyl, T 4 is hydrogen or methyl, and W is hydrogen, halogen, methyl or methoxy, and the rings B 2 and D 2 are unsubstituted or substituted by one or two substituents selected from methyl, methoxy and tert-butyl.
References Cited (Backward Citations)
US3574210A
Cited
US3637693A
Cited
US3882121A
Cited
US3931179A
Cited
US3998951A
Cited
US4246401A
Cited
US4306065A
Cited
EP0033716A1
Cited
US4480096A
Cited
US4370501A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-11-24 | 1990-05-26 | 1990-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-24 | 1994-05-26 | 1994-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-24 | 1998-05-26 | 1998-11-25 | $7700.00 | Window Closed / Lapsed |