US3769018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diazotype materials containing resorcinol mono(aryloxy or arylthio)alkyl ethers
Assignee: Canon Production Printing Holding BV
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Filing: 1971-05-10
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Granted: 1973-10-30
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Expires: 1991-05-10
Abstract
Abstract Resorcinol-mono(aryloxy or arylthio) alkyl ethers, e.g. m-(2phenoxy-ethoxy)phenol, are. They are non-migrating in diazotype material; when coupled with light-sensitive diazo compounds therein after imagewise exposure of the material they form yellow to orange-yellow, light-stable images having high absorption for U.V. radiation. Compositions of the compounds with diazo compounds and blue-coupling azo couplers, particularly certain monoalkyl-amides of 2-hydroxy-3-naphthoic acid, provide sensitized diazotype film materials which are black-developing and excellently suited for making intermediate film copies to be used in further diazotype copying.
Inventors
- 👤 A Hectors
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:46
CPC Classifications
C; C07; C07C; C07C321/00; G; G03; G03C; G03C1/00; G03C1/52; G03C1/58
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
58 words
Two-component diazotype material comprising a light sensitive film in the form of a self-supporting film or in the form of a film layer on a supporting material, said film containing a light-sensitive p-amino benzene diazonium salt, an acidic stabilizer, a blue-coupling azo component and a yellow-coupling azo component, said blue-coupling azo component being a compound of the formula
Claim 2
Dependent Claim
26 words
Two-component diazotype material according to claim 2, wherein Y is an oxygen atom and said aryl radical is a phenyl radical having thereon no mercapto group.
Claim 3
Dependent Claim
43 words
Two-component diazotype material according to claim 2, wherein said aryl radical is a phenyl radical having thereon no mercapto group but having substituted thereon at least one halogen atom or at least one alkyl or alkoxy group having one to four carbon atoms.
Claim 4
Dependent Claim
26 words
Two-component diazotype material according to claim 2, said yellow-coupling azo component being m-(2-phenoxyethoxy)phenol; m(3-(4-chlorophenoxy)propoxy)phenol; m-)2-(2-bromophenoxy)ethoxy)phenol; m-(2-(4-acetaminophenoxy)ethoxy)phenol;m(2-(2,4 -dichlorophenoxy)ethoxy)phenol; m-(4-(2,3-dimethylphenoxy)butoxy)phenol; m-(2-naphthyloxy-(1) ethoxy)phenol; m-(2-(4-tolylthio)ethoxy)phenol; m-(2-(4-methoxyphenylthio) ethoxy)phenol; m-(2-(4-tert.butylphenylthio)ethoxy)phenol; or m-(2-(4-chloronaphthylthio-1)ethoxy)phenol.
Claim 5
Dependent Claim
14 words
Two-component diazotype material according to claim 8, said yellow-coupling azo component being m-(2-phenoxy-ethoxy) phenol.
Claim 6
Dependent Claim
16 words
Two-component diazotype material according to claim 8, said diazonium salt being a 3-alkyl-4-pyrrolidinyl benzene diazonium salt.
Claim 7
Dependent Claim
40 words
Two-component diazotype material according to claim 8, that forms a strong black image on a clear background, said diazo compound being a 4-diethylamino benzene diazonium salt, said blue-coupling azo component being N-(2-aminoethyl)-3-hydroxy-2-naphthamide, and said yellow-coupling azo component being m-(2-phenoxy-ethoxy) phenol.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |