Patent US813674A successfully refreshed from Google Patents.
Patent US4025089A successfully refreshed from Google Patents.
US4025089A
Expired / Lapsed
US
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Pressure-sensitive copying or recording material
Assignee: Novartis Corp
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Filing: 1976-08-03
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Granted: 1977-05-24
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Expires: 1996-08-03
Abstract
Abstract Pressure-sensitive copying or recording material which contains, in its color-producing system, as the color former, at least one azomethine compound of the formula ##STR1## WHEREIN R 1 , R 2 , R 3 and R 4 each represent hydrogen, alkyl of 1 to 4 carbon atoms, cyanoalkyl of 2 to 5 carbon atoms, unsubstituted benzyl or phenyl, or benzyl or phenyl substituted by halogen, alkyl of 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms, or R 1 and R 2 conjointly represent alkylene of 4 to 5 carbon atoms and/or R 3 and R 4 conjointly represent alkylene of 4 or 5 carbon atoms, X 1 and X 2 each represent hydrogen, halogen, alkyl of 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms, A represents naphthylene or phenylene which is unsubstituted or substituted by halogen, alkyl of 1 to 5 carbon atoms, Alkoxy of 1 to 4 carbon atoms, phenoxy, halogenophenoxy or acylamino of 1 to 9 carbon atoms, and n is 1 or 2.
Inventors
- 👤 Robert Garner
- 👤 Jean-Claude Petitpierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:45
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/136; Y; Y10; Y10S; Y10S428/00; Y10S428/914; Y10T; Y10T428/00; Y10T428/25
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
175 words
Pressure-sensitive copying or recording material which contains, in its colour-producing system, as the colour former, at least one azomethine compound of the formula ##STR36## wherein R 1 , R 2 , R 3 and R 4 each represent hydrogen, alkyl of 1 to 4 carbon atoms, cyanoalkyl of 2 to 5 carbon atoms, unsubstituted benzyl or phenyl, or benzyl or phenyl substituted by halogen, alkyl of 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms, or R 1 and R 2 conjointly represent alkylene of 4 or 5 carbon atoms and/or R 3 and R 4 conjointly represent alkylene of 4 or 5 carbon atoms, X 1 and X 2 each represent hydrogen, halogen, alkyl of 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms, A represents naphthylene or phenylene which is unsubstituted or substituted by halogen, alkyl of 1 to 5 carbon atoms, alkoxy of 1 to 4 carbon atoms, phenoxy, halogenophenoxy or acylamino of 1 to 9 carbon atoms, and n is 1 or 2.
Claim 2
Dependent Claim
175 words
Pressure-sensitive copying or recording material which contains, in its colour-producing system, as the colour former, at least one azomethine compound of the formula ##STR36## wherein R 1 , R 2 , R 3 and R 4 each represent hydrogen, alkyl of 1 to 4 carbon atoms, cyanoalkyl of 2 to 5 carbon atoms, unsubstituted benzyl or phenyl, or benzyl or phenyl substituted by halogen, alkyl of 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms, or R 1 and R 2 conjointly represent alkylene of 4 or 5 carbon atoms and/or R 3 and R 4 conjointly represent alkylene of 4 or 5 carbon atoms, X 1 and X 2 each represent hydrogen, halogen, alkyl of 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms, A represents naphthylene or phenylene which is unsubstituted or substituted by halogen, alkyl of 1 to 5 carbon atoms, alkoxy of 1 to 4 carbon atoms, phenoxy, halogenophenoxy or acylamino of 1 to 9 carbon atoms, and n is 1 or 2.
Claim 3
Dependent Claim
20 words
Material according to claim 1, wherein the colour former corresponds to the formula (1), wherein the index n is 1.
Claim 4
Dependent Claim
133 words
Material according to claim 1, wherein the colour former corresponds to the formula (1), wherein R 1 , r 2 , r 3 and R 4 each represent hydrogen, alkyl of 1 to 4 carbon atoms, cyanoalkyl of 2 to 5 carbon atoms, benzyl or phenyl, or R 1 and R 2 conjointly represent alkylene of 4 or 5 carbon atoms and/or R 3 and R 4 conjointly represent alkylene of 4 or 5 carbon atoms, X 1 and X 2 each represent hydrogen, halogen, alkyl of 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms, A represents naphthylene or phenylene which is unsubstituted or substituted by halogen, alkyl of 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms, and n is 1 or 2.
Claim 5
Dependent Claim
108 words
Material according to claim 1, wherein the colour former corresponds to the formula ##STR37## wherein R 5 and R 6 each represent alkyl of 1 to 4 carbon atoms, benzyl or phenyl or R 5 and R 6 conjointly represent alkylene of 4 or 5 carbon atoms, X 3 represents hydrogen, alkyl of 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms, A 1 represents phenylene which is unsubstituted or substituted by halogen, alkyl of 1 to 5 carbon atoms, alkoxy of 1 to 4 carbon atoms, phenoxy, chlorophenoxy, benzoylamino or alkanoylamino of 2 to 4 carbon atoms, and n is 1 or 2.
Claim 6
Dependent Claim
20 words
Material according to claim 4, wherein the colour former corresponds to the formula (2) wherein the index n is 1.
Claim 7
Dependent Claim
73 words
Material according to claim 5, wherein the colour former corresponds to the formula ##STR38## wherein R 7 and R 8 each represent alkyl of 1 to 4 carbon atoms or benzyl, X 4 represents hydrogen, halogen, methyl, methoxy or ethoxy, Y 1 represents hydrogen, halogen, methyl, methoxy, phenoxy, chlorophenoxy, benzoylamino or alkanoylamino of 2 to 4 carbon atoms and Y 2 represents hydrogen, halogen, methoxy or alkyl of 1 to 5 carbon atoms.
Claim 8
Dependent Claim
58 words
Material according to claim 5, wherein the colour former corresponds to the formula ##STR39## wherein R 5 and R 6 each represent alkyl of 1 to 4 carbon atoms, benzyl or phenyl and B represents phenyl which is unsubstituted or substituted by alkyl of 1 to 4 carbon atoms or by alkoxy of 1 to 4 carbon atoms.
Claim 9
Dependent Claim
52 words
Material according to claim 7, wherein the colour former corresponds to the formula ##STR40## wherein R 7 and R 8 each represent alkyl of 1 to 4 carbon atoms or benzyl, Y 3 represents hydrogen, alkyl of 1 to 4 carbon atoms or methoxy and Y 4 represents hydrogen, methyl or methoxy.
Claim 10
Dependent Claim
26 words
Material according to claim 1 which contains at least one azomethine compound of the formula (1), dissolved in an organic solvent, and an electron acceptor substance.
Claim 11
Dependent Claim
19 words
Material according to claim 1, wherein the colour former, dissolved in an organic solvent, is contained in pressure-rupturable micro-capsules.
Claim 12
Dependent Claim
19 words
Material according to claim 9 wherein the electron acceptor substance is attapulgus clay, silton clay or a phenolformaldehyde resin.
Claim 13
Dependent Claim
48 words
Material according to claim 10, wherein the encapsulated colour former is coated on one side of a transfer sheet and the electron acceptor substance is coated on one side of a second (receiving) sheet, the sheets being arranged such that in use the coated sides contact each other.
Claim 14
Dependent Claim
19 words
Material according to claim 1, wherein the colour former is contained together with one or more other colour formers.
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) | 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 |