US4022771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aminophenyl lactone compounds containing an ethyleno group
Assignee: WTA Inc
•
Filing: 1975-04-10
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Granted: 1977-05-10
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Expires: 1995-04-10
Abstract
Abstract A chromogenic compound of normally colorless form is disclosed having the following structural formula: ##STR1## 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
2026-11-07 17:58
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: 13
Claim 1
Independent Claim
89 words
A compound represented by the formula: ##STR11## wherein E is: ##STR12## unsubstituted and alkyl-, cloro-, dichloro-, trichloro-, tetrachloro-, bromo-, dibromo-, tribromo-, tetrabromo-, nitro-, and dialkylamino- substituted; ##STR13## 4-alkoxyphenyl; 2,4-dialkoxyphenyl and 3,4-dialkoxyphenyl; Y is: any X; hydrogen; carbalkoxy; and nitro; R 1 and R 2 are: hydrogen, alkyl, unsubstituted phenyl, substituted phenyl, benzyl, acyl, and cycloalkyl; but R 1 and R 2 are not both phenyl; R 3 , r 4 , r 5 , and R 6 are: hydrogen, alkyl, phenyl, benzyl, alkoxy, halo, dialkylamino, monoalkylamino, amino and acylamino.
Claim 2
Dependent Claim
89 words
A compound represented by the formula: ##STR11## wherein E is: ##STR12## unsubstituted and alkyl-, cloro-, dichloro-, trichloro-, tetrachloro-, bromo-, dibromo-, tribromo-, tetrabromo-, nitro-, and dialkylamino- substituted; ##STR13## 4-alkoxyphenyl; 2,4-dialkoxyphenyl and 3,4-dialkoxyphenyl; Y is: any X; hydrogen; carbalkoxy; and nitro; R 1 and R 2 are: hydrogen, alkyl, unsubstituted phenyl, substituted phenyl, benzyl, acyl, and cycloalkyl; but R 1 and R 2 are not both phenyl; R 3 , r 4 , r 5 , and R 6 are: hydrogen, alkyl, phenyl, benzyl, alkoxy, halo, dialkylamino, monoalkylamino, amino and acylamino.
Claim 3
Dependent Claim
11 words
The compound of claim 1 wherein X and Y are ##STR14##
Claim 4
Dependent Claim
13 words
The compound of claim 1 wherein X is ##STR15## and Y is hydrogen.
Claim 5
Dependent Claim
13 words
The compound of claim 2 wherein R 1 and R 2 are alkyl.
Claim 6
Dependent Claim
37 words
The compound of claim 4 wherein R 3 in other than the X and Y moieties is alkoxy and R 3 in the X and Y moieties, R 4 , R 5 and R 6 are hydrogen.
Claim 7
Dependent Claim
19 words
The compound of claim 4 wherein R 3 , R 4 , R 5 and R 6 are hydrogen.
Claim 8
Dependent Claim
17 words
The compound of claim 6 wherein R 1 and R 2 are ethyl and E is ##STR16##
Claim 9
Dependent Claim
17 words
The compound of claim 6 wherein R 1 and R 2 are ethyl and E is ##STR17##
Claim 10
Dependent Claim
17 words
The compound of claim 6 wherein R 1 and R 2 are methyl and E is ##STR18##
Claim 11
Dependent Claim
10 words
The compound of claim 4 wherein R 3 is alkyl.
Claim 12
Dependent Claim
16 words
The compound of claim 4 wherein R 3 in the X and Y moieties is alkyl.
Claim 13
Dependent Claim
18 words
The compound of claim 11 wherein R 3 in other than the X and Y moieties is alkoxy.
References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1980-05-09 | 1980-11-08 | 1981-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-09 | 1984-11-08 | 1985-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-09 | 1988-11-08 | 1989-05-10 | $7700.00 | Window Closed / Lapsed |