Patent US4124227A successfully refreshed from Google Patents.
US4124227A
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Oxime ethers of Michler's hydrol, method of producing same and pressure-sensitive recording systems containing such compounds
Assignee: Moore Business Forms Inc
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Filing: 1977-05-05
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Granted: 1978-11-07
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Expires: 1997-05-05
Abstract
Abstract Disclosed are normally substantially colorless chromogenic oxime ether of Michler's hydrol color precursor compounds having the following generic structural formula: ##STR1## wherein R 1 and R 2 each represents an organic radical. More specifically, R 1 may represent either a lower alkyl group having from one to five carbon atoms or a phenyl group and R 2 may represent a substituted or unsubstituted phenyl group having the following formula: ##STR2## wherein R 3 and R 4 each separately represents either a hydrogen atom, a chlorine atom or a nitro group. These compounds are initially substantially colorless and are capable of becoming highly colored when brought into reactive contact with many conventional Lewis acid materials or the like. Accordingly, these compounds are highly useful as a component of pressuresensitive copying papers.
Inventors
- 👤 Henn Ruus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:46
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: 18
Claim 1
Independent Claim
35 words
In a pressure-sensitive recording system comprising a substantially colorless color precursor compound and a layer of an electron-acceptor material, the improvement which comprises utilizing acetophenone oxime ether of Michler's hydrol as said color precursor compound.
Claim 2
Dependent Claim
35 words
In a pressure-sensitive recording system comprising a substantially colorless color precursor compound and a layer of an electron-acceptor material, the improvement which comprises utilizing acetophenone oxime ether of Michler's hydrol as said color precursor compound.
Claim 3
Dependent Claim
38 words
In a pressure-sensitive recording system comprising a layer containing a substantially colorless color precursor compound and a layer of an electron-acceptor material, the improvement which comprises utilizing acetophenone oxime ether of Michler's hydrol as said color precursor compound.
Claim 4
Dependent Claim
38 words
In a pressure-sensitive recording system comprising a layer containing a substantially colorless color precursor compound and a layer of an electron-acceptor material, the improvement which comprises utilizing acetophenone oxime ether of Michler's hydrol as said color precursor compound.
Claim 5
Dependent Claim
40 words
In a pressure-sensitive recording system comprising a layer of microcapsules containing a substantially colorless color precursor compound and a layer of an electron-acceptor material, the improvement which comprises utilizing acetophenone oxime ether of Michler's hydrol as said color precursor compound.
Claim 6
Dependent Claim
40 words
In a pressure-sensitive recording system comprising a layer of microcapsules containing a substantially colorless color precursor compound and a layer of an electron-acceptor material, the improvement which comprises utilizing acetophenone oxime ether of Michler's hydrol as said color precursor compound.
Claim 7
Dependent Claim
56 words
In a pressure-sensitive recording system comprising a substantially colorless precursor compound and a layer of an electron-acceptor material, the improvement which comprises utilizing, as said color precursor compound, a substantially colorless oxime ether of Michler's hydrol dye precursor compound having the following structural formula: ##STR13## wherein R 2 and R 1 each represents an organic radical.
Claim 8
Dependent Claim
56 words
In a pressure-sensitive recording system comprising a substantially colorless precursor compound and a layer of an electron-acceptor material, the improvement which comprises utilizing, as said color precursor compound, a substantially colorless oxime ether of Michler's hydrol dye precursor compound having the following structural formula: ##STR13## wherein R 2 and R 1 each represents an organic radical.
Claim 9
Dependent Claim
60 words
In a pressure-sensitive recording system comprising a layer containing a substantially colorless color precursor compound and a layer of an electron-acceptor material, the improvement which comprises utilizing, as said color precursor compound, a substantially colorless oxime ether of Michler's hydrol dye precursor compound having the following structural formula: ##STR14## wherein R 2 and R 1 each represents an organic radical.
Claim 10
Dependent Claim
60 words
In a pressure-sensitive recording system comprising a layer containing a substantially colorless color precursor compound and a layer of an electron-acceptor material, the improvement which comprises utilizing, as said color precursor compound, a substantially colorless oxime ether of Michler's hydrol dye precursor compound having the following structural formula: ##STR14## wherein R 2 and R 1 each represents an organic radical.
Claim 11
Dependent Claim
61 words
In a pressure-sensitive recording system comprising a layer of microcapsules containing a substantially colorless precursor compound and a layer of an electron-acceptor material, the improvement which comprises utilizing, as said color precursor compound, a substantially colorless oxime ether of Michler's hydrol dye precursor compound having the following structural formula: ##STR15## wherein R 2 and R 1 each represents an organic radical.
Claim 12
Dependent Claim
61 words
In a pressure-sensitive recording system comprising a layer of microcapsules containing a substantially colorless precursor compound and a layer of an electron-acceptor material, the improvement which comprises utilizing, as said color precursor compound, a substantially colorless oxime ether of Michler's hydrol dye precursor compound having the following structural formula: ##STR15## wherein R 2 and R 1 each represents an organic radical.
Claim 13
Dependent Claim
83 words
In a pressure-sensitive recording system comprising a substantially colorless color precursor compound and a layer of an electron-acceptor material, the improvement which comprises utilizing, as said color precursor compound, a phenone oxime ether of Michler's hydrol having the following structural formula: ##STR16## wherein R 1 represents either a lower alkyl group having from one to five carbon atoms or a phenyl group and wherein R 2 and R 3 each separately represent either a hydrogen atom, a chlorine atom or a nitro group.
Claim 14
Dependent Claim
83 words
In a pressure-sensitive recording system comprising a substantially colorless color precursor compound and a layer of an electron-acceptor material, the improvement which comprises utilizing, as said color precursor compound, a phenone oxime ether of Michler's hydrol having the following structural formula: ##STR16## wherein R 1 represents either a lower alkyl group having from one to five carbon atoms or a phenyl group and wherein R 2 and R 3 each separately represent either a hydrogen atom, a chlorine atom or a nitro group.
Claim 15
Dependent Claim
86 words
In a pressure-sensitive recording system comprising a layer containing a substantially colorless color precursor compound and a layer of an electron-acceptor material, the improvement which comprises utilizing, as said color precursor compound, a phenone oxime ether of Michler's hydrol having the following structural formula: ##STR17## wherein R 1 represents either a lower alkyl group having from one to five carbon atoms or a phenyl group and wherein R 2 and R 3 each separately represent either a hydrogen atom, a chlorine atom or a nitro group.
Claim 16
Dependent Claim
86 words
In a pressure-sensitive recording system comprising a layer containing a substantially colorless color precursor compound and a layer of an electron-acceptor material, the improvement which comprises utilizing, as said color precursor compound, a phenone oxime ether of Michler's hydrol having the following structural formula: ##STR17## wherein R 1 represents either a lower alkyl group having from one to five carbon atoms or a phenyl group and wherein R 2 and R 3 each separately represent either a hydrogen atom, a chlorine atom or a nitro group.
Claim 17
Dependent Claim
88 words
In a pressure-sensitive recording system comprising a layer of microcapsules containing a substantially colorless color precursor compound and a layer of an electron-acceptor material, the improvement which comprises utilizing, as said color precursor compound, a phenone oxime ether of Michler's hydrol having the following structural formula: ##STR18## wherein R 1 represents either a lower alkyl group having from one to five carbon atoms or a phenyl group and wherein R 2 and R 3 each separately represent either a hydrogen atom, a chlorine atom or a nitro group.
Claim 18
Dependent Claim
88 words
In a pressure-sensitive recording system comprising a layer of microcapsules containing a substantially colorless color precursor compound and a layer of an electron-acceptor material, the improvement which comprises utilizing, as said color precursor compound, a phenone oxime ether of Michler's hydrol having the following structural formula: ##STR18## wherein R 1 represents either a lower alkyl group having from one to five carbon atoms or a phenyl group and wherein R 2 and R 3 each separately represent either a hydrogen atom, a chlorine atom or a nitro group.
References Cited (Backward Citations)
US3293060A
Cited
US2915415A
Cited
US2900388A
Cited
US3663256A
Cited
USB211786I5
Cited
US4000087A
Cited
US4054718A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-06 | 1982-05-08 | 1982-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-06 | 1986-05-08 | 1986-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-06 | 1990-05-08 | 1990-11-07 | $7700.00 | Window Closed / Lapsed |