US4172180A
Expired / Lapsed
US
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Heat sensitive color forming and heat sensitive electrical conductivity increasing composition and heat sensitive image recording sheet using the same
Assignee: Fujifilm Holdings Corp
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Filing: 1978-02-16
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Granted: 1979-10-23
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Expires: 1998-02-16
Abstract
Abstract A heat sensitive color forming and heat sensitive electrical conductivity increasing composition comprising a mixture of (A) a basic polymer which reacts with hydrogen halide and is capable of forming a quaternary salt and (B) a halogen-containing polymer capable of forming a conjugated polyene by the elimination of hydrogen halide; and a heat sensitive image recording sheet containing the same.
Inventors
- 👤 Keiji Takeda
- 👤 Masayoshi Nagata
- 👤 Kenji Matsumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:01
CPC Classifications
G; G03; G03C; G03C3/00; B; B41; B41M; B41M5/00; B41M5/20; B41M5/26; B41M5/30; C; C09; C09K; C09K3/00; C09K3/16; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/082; Y; Y10; Y10S; Y10S428/00; Y10S428/904; Y10S428/913; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31551; Y10T428/31645; Y10T428/31649; Y10T428/31678; Y10T428/31692; Y10T428/31699; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/3188; Y10T428/31884; Y10T428/31891; Y10T428/31895; Y10T428/31906; Y10T428/31935
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
175 words
A heat sensitive color forming and electrical conductivity increasing composition which comprises a mixture of (A) a basic polymer capable of reacting with hydrogen halide and capable of forming a quaternary salt, said basic polymer being obtained by polymerizing one or more addition polymerizable monomers containing a nitrogen-containing heterocyclic group or an aminophenyl group capable of being quaternized by reacting with hydrogen halide or by copolymerizing one or more of such addition polymerizable monomers with one or more other addition polymerizable monomers, said basic polymer having a number of basic groups as repeating units, and (B) a halogen-containing polymer capable of forming a conjugated polyene by elimination of hydrogen halide, said halogen-containing polymer being obtained by polymerizing one or more addition polymerizable monomers in which at least one halogen atom is substituted for a hydrogen atom bonded to a carbon atom forming an ethylenic unsaturated bond therein or copolymerizing one or more such monomers with one or more other addition polymerizable monomers or obtained by chlorination of a polymer which does not contain any chlorine.
Claim 2
Dependent Claim
175 words
A heat sensitive color forming and electrical conductivity increasing composition which comprises a mixture of (A) a basic polymer capable of reacting with hydrogen halide and capable of forming a quaternary salt, said basic polymer being obtained by polymerizing one or more addition polymerizable monomers containing a nitrogen-containing heterocyclic group or an aminophenyl group capable of being quaternized by reacting with hydrogen halide or by copolymerizing one or more of such addition polymerizable monomers with one or more other addition polymerizable monomers, said basic polymer having a number of basic groups as repeating units, and (B) a halogen-containing polymer capable of forming a conjugated polyene by elimination of hydrogen halide, said halogen-containing polymer being obtained by polymerizing one or more addition polymerizable monomers in which at least one halogen atom is substituted for a hydrogen atom bonded to a carbon atom forming an ethylenic unsaturated bond therein or copolymerizing one or more such monomers with one or more other addition polymerizable monomers or obtained by chlorination of a polymer which does not contain any chlorine.
Claim 3
Dependent Claim
32 words
The composition as claimed in claim 1, wherein said basic polymer (A) is a polymer of an addition polymerizable monomer containing a nitrogen-containing heterocyclic group or a monomer containing an aminophenyl group.
Claim 4
Dependent Claim
64 words
The composition as claimed in claim 2, wherein said nitrogen-containing heterocyclic group is bonded to a carbon atom of main chain of said polymer through an atom of said nitrogen-containing heterocyclic group other than a nitrogen atom of said nitrogen-containing heterocyclic group and said nitrogen-containing heterocyclic group is a pyridyl group, a quinolyl group, a piperidyl group, an imidazolyl group or a pyrimidyl group.
Claim 5
Dependent Claim
38 words
The composition as claimed in claim 2, wherein said monomer containing a nitrogen-containing heterocyclic group is unsubstituted or substituted with one or more of a straight chain or branched chain alkyl group having 1 to 7 carbon atoms.
Claim 6
Dependent Claim
144 words
The composition as claimed in claim 2, wherein said basic polymer (A) is a homopolymer containing as a repeating unit the repeating unit of at least one addition polymerizable monomer selected from the group consisting of compounds represented by the general formulae: (I) and (II): ##STR2## wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 and R 8 , which may be the same or different, each represents a hydrogen atom, or a straight chain or branched alkyl group having 1 to 7 carbon atoms, or said basic polymer (A) is a copolymer containing as a repeating unit the repeating unit of at least one addition polymerizable monomer selected from the group consisting of compounds represented by the general formulae (I) and (II) in a mol fraction of at least about 0.3.
Claim 7
Dependent Claim
16 words
The composition as claimed in claim 2, wherein said basic polymer (A) is poly(4-vinylpyridine) or poly(3-vinylpyridine).
Claim 8
Dependent Claim
75 words
The composition as claimed in claim 1, wherein said halogen-containing polymer (B) is a homopolymer containing as a repeating unit the repeating unit of at least one monomer selected from the group consisting of vinylidene chloride and vinylidene bromide or a copolymer containing as a repeating unit the repeating unit of at least one monomer selected from the group consisiting of vinylidene chloride and vinylidene bromide in a molar fraction of at least about 0.3.
Claim 9
Dependent Claim
33 words
The composition as claimed in claim 7, wherein said halogen-containing polymer (B) is a copolymer of vinylidene chloride and acrylonitrile and the molar fraction of vinylidene chloride ranges of from 0.35 to 0.95.
Claim 10
Dependent Claim
30 words
The composition as claimed in claim 1, wherein said basic polymer (A) and said halogen-containing polymer (B) are present in a weight ratio of from about 8:1 to about 1:5.
Claim 11
Dependent Claim
21 words
A heat sensitive image recording sheet comprising a support having thereon a layer of the composition as claimed in claim 1.
Claim 12
Dependent Claim
19 words
The heat sensitive image recording sheet as claimed in claim 10, wherein said support is an electrically conductive support.
Claim 13
Dependent Claim
35 words
The composition as claimed in claim 1, wherein said halogen-containing polymer is obtained by the chlorination of polymer which does not contain any chlorine has a chlorine content of about 50 weight percent or more.
Claim 14
Dependent Claim
25 words
The composition as claimed in claim 12, wherein said halogen-containing polymer is selected from the group consisting of chlorinated polyethylene, chlorinated polypropylene and chlorinated rubbers.
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) | 1982-10-22 | 1983-04-23 | 1983-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-22 | 1987-04-23 | 1987-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-22 | 1991-04-23 | 1991-10-23 | $7700.00 | Window Closed / Lapsed |