US4119776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinyl phthalide color formers
Assignee: WTA Inc
•
Filing: 1977-04-25
•
Granted: 1978-10-10
•
Expires: 1997-04-25
Abstract
Abstract A chromogenic compound of normally colorless form is disclosed having the following structural formula: ##STR1## wherein A can be ##STR2## T, Q, X, Y and Z can be, among several others, hydrogen, alkyl, alkoxy, aryl, and heterocyclic, substituted and unsubstituted; and E can be a broad family of aromatic and heterocyclic structures. The compound is eligible for use in pressure-sensitive record materials and manifold marking systems. Because of light absorption characteristics, selected compounds of this invention are especially useful where machine readability and machine copiability are important.
Inventors
- 👤 Sheldon Farber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:11
CPC Classifications
C; C07; C07D; C07D313/00; C07D313/16; C07D313/20; B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/136; B41M5/145; B41M5/26; B41M5/30; B41M5/323; B41M5/327; C07D209/00; C07D209/02; C07D209/04; C07D209/30; C07D209/32; C07D209/36; C07D307/00; C07D307/77; C07D307/87; C07D307/88; C07D307/92; C07D491/00; C07D491/02; C07D491/04
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
117 words
A compound represented by a formula selected from: ##STR24## wherein E is ##STR25## 4-(N-piperidino)phenyl and 4-(N-pyrrolidino)phenyl; Y is 4-(N-piperidino)phenyl, 4-(N-pyrrolidino)phenyl, phenyl and ##STR26## R 1 is hydrogen, alkyl and phenyl; R 2 is alkyl and cycloalkyl; R 3 is hydrogen and alkoxy having 1 to 4 carbons; and R 7 and R 8 are alkyl; provided when Y is phenyl or ##STR27## 4-(N-piperidino)phenyl, 4-(N-pyrrolidino)phenyl; Y is any X, hydrogen and ##STR28## R 1 , R 2 , R 7 and R 8 are alkyl; and R 3 is hydrogen, methoxy, ethoxy and chlorine; provided when E is ##STR29## wherein X is ##STR30## 4-(N-piperidino)phenyl and 4-(N-pyrrolidino)phenyl; Y is hydrogen, phenyl, ##STR31## wherein T is kairol-6-yl and julolidin-9-yl; ##STR32##
Claim 2
Dependent Claim
117 words
A compound represented by a formula selected from: ##STR24## wherein E is ##STR25## 4-(N-piperidino)phenyl and 4-(N-pyrrolidino)phenyl; Y is 4-(N-piperidino)phenyl, 4-(N-pyrrolidino)phenyl, phenyl and ##STR26## R 1 is hydrogen, alkyl and phenyl; R 2 is alkyl and cycloalkyl; R 3 is hydrogen and alkoxy having 1 to 4 carbons; and R 7 and R 8 are alkyl; provided when Y is phenyl or ##STR27## 4-(N-piperidino)phenyl, 4-(N-pyrrolidino)phenyl; Y is any X, hydrogen and ##STR28## R 1 , R 2 , R 7 and R 8 are alkyl; and R 3 is hydrogen, methoxy, ethoxy and chlorine; provided when E is ##STR29## wherein X is ##STR30## 4-(N-piperidino)phenyl and 4-(N-pyrrolidino)phenyl; Y is hydrogen, phenyl, ##STR31## wherein T is kairol-6-yl and julolidin-9-yl; ##STR32##
Claim 3
Dependent Claim
11 words
A compound according to claim 1 having the formula, 3-(2-methoxy-4-diethylaminophenyl)-3[ 1-(dimethylaminophenyl)-1-(1-ethyl-2-methylindol-3-yl)ethyleno-2]-4,5,6,7-tetrachlorophthalide.
Claim 4
Dependent Claim
10 words
A compound according to claim 1 having the formula, 3-(p-diethylaminophenyl)-3-[1-(dimethylaminophenyl)-1-(1-ethyl-2-methylindol-3-yl)ethyleno-2]-4,5,6,7-tetrachlorophthalide.
Claim 5
Dependent Claim
10 words
A compound according to claim 1 having the formula, 3-(1-ethyl-2-methylindol-3-yl)-3-[1,1-bis-(p-dimethylaminophenyl)ethyleno-2]-4,5,6,7-tetrachlorophthalide.
Claim 6
Dependent Claim
15 words
A compound represented by the formula: ##STR33## wherein R 1 and R 2 are alkyl.
Claim 7
Dependent Claim
15 words
A compound represented by the formula: ##STR33## wherein R 1 and R 2 are alkyl.
Claim 8
Dependent Claim
14 words
A compound according to claim 5 wherein R 1 and R 2 are methyl.
Claim 9
Dependent Claim
40 words
A compound represented by the formula: ##STR34## T is 4-(N-morpholino)phenyl and ##STR35## R 1 is hydrogen, alkyl, tolyl and cyclohexyl; R 2 is hydrogen and alkyl; R 3 is hydrogen and alkoxy; and R 7 and R 8 are alkyl.
Claim 10
Dependent Claim
40 words
A compound represented by the formula: ##STR34## T is 4-(N-morpholino)phenyl and ##STR35## R 1 is hydrogen, alkyl, tolyl and cyclohexyl; R 2 is hydrogen and alkyl; R 3 is hydrogen and alkoxy; and R 7 and R 8 are alkyl.
Claim 11
Dependent Claim
2 words
3-(p-diethylaminophenyl)-3-[2-methyl-bis-1,1-(p-dimethylaminophenyl)ethyleno-2] phthalide.
Claim 12
Dependent Claim
2 words
3-(p-diethylaminophenyl)-3-[2-methyl-bis-1,1-(p-dimethylaminophenyl)ethyleno-2] phthalide.
Claim 13
Dependent Claim
1 words
3-(2-methoxy-4-diethylaminophenyl)-3-[2-methyl-bis-1,1-(p-diethylaminophenyl)ethyleno-2]-4,5,6,7-tetrachlorophthalide.
Claim 14
Dependent Claim
1 words
3-(2-methoxy-4-diethylaminophenyl)-3-[2-methyl-bis-1,1-(p-diethylaminophenyl)ethyleno-2]-4,5,6,7-tetrachlorophthalide.
Claim 15
Dependent Claim
4 words
3-[4-(N-morpholino) phenyl]-3-[2-methyl-bis-1,1-(p-diethylaminophenyl) ethyleno-2] phthalide.
Claim 16
Dependent Claim
4 words
3-[4-(N-morpholino) phenyl]-3-[2-methyl-bis-1,1-(p-diethylaminophenyl) ethyleno-2] phthalide.
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) | 1981-10-09 | 1982-04-10 | 1982-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-09 | 1986-04-10 | 1986-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-09 | 1990-04-10 | 1990-10-10 | $7700.00 | Window Closed / Lapsed |