Patent US3859112A successfully refreshed from Google Patents.
US3859112A
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US
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Water resistant heatsensitive recording composition containing an ethyleneimine hardener
Assignee: Mitsubishi Paper Mills Ltd
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Filing: 1973-07-06
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Granted: 1975-01-07
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Expires: 1993-07-06
Abstract
Abstract Water resistance, coagulation stability (dispersibility) and texture of heat-sensitive recording material which comprises a normally colorless or pale-colored chromogenic compound capable of forming a color by reaction with an organic acidic compound at an elevated temperature, said organic acidic compound and a water-soluble binder can be improved by adding thereto a hardener for said binder. Said hardener is a compound having 2 to 10 ethyleneimine groups D R A W I N G
Inventors
- 👤 Isao Kohmura
- 👤 Kiyoshi Futaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:08
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/30; B41M5/337; B41M5/3372; Y; Y10; Y10S; Y10S428/00; Y10S428/913
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
50 words
AN AQUEOUS DISPERSION COMPOSITION FOR HEATSENSITIVE RECORDING MATERIAL WHICH COMPRISES A NORMALLY COLORLESS OR PALE-COLORED CHROMOGENIC COMPOUND CAPABLE OF FORMING A COLOR BY REACTION WITH A PHENOL AT AN ELEVATED TEMPERATURE, THE SAID PHENOL, A WATER-SOLUBLE BINDER, AND A HARDENER HAVING 2 TO 10 ETHYLENEIMINE GROUPS FOR THE SAID BINDER.
Claim 2
Dependent Claim
50 words
AN AQUEOUS DISPERSION COMPOSITION FOR HEATSENSITIVE RECORDING MATERIAL WHICH COMPRISES A NORMALLY COLORLESS OR PALE-COLORED CHROMOGENIC COMPOUND CAPABLE OF FORMING A COLOR BY REACTION WITH A PHENOL AT AN ELEVATED TEMPERATURE, THE SAID PHENOL, A WATER-SOLUBLE BINDER, AND A HARDENER HAVING 2 TO 10 ETHYLENEIMINE GROUPS FOR THE SAID BINDER.
Claim 3
Dependent Claim
23 words
A composition according to claim 1, wherein the water soluble binder is a water-soluble high molecular weight compound having carboxyl or hydroxyl groups.
Claim 4
Dependent Claim
22 words
A composition according to claim 2, wherein the water-soluble binder is a styrene-maleic anhydride copolymer or a mixture thereof with hydroxyethyl cellulose.
Claim 5
Dependent Claim
43 words
A composition according to claim 2, wherein the chromogenic compound is selected from the group consisting of: Crystal Violet Lactone Malachite Green Lactone, 3,3-bis(p-Dimethylaminophenyl)-4,5,6,7-tetrachlorophthalide, Benzo- Beta -naphthospiropyran, 3-Methyl-di- Beta -naphthospiropyran, 1,3,3-trimethyl-6''-chloro-8''-methoxyindolino benzospiropyran, Diethylamino-(N-methylanilino)fluoran, 3-Dimethylamino-6-methoxyfluoran, 3-Dibutylamino-6-methyl-7-chlorofluoran, 3-Morpholino-5,6-benzofluoran, 6''-chloro-8''-methoxyindolino-benzospiropyran, Benzyl Leuco Methylene Blue and 1-Amino-3,6,7-trimethylfluoran.
Claim 6
Dependent Claim
45 words
A composition according to claim 2, wherein the phenol is selected from the group consisting of metracresol, catechol, 4, 4''-isopropylidenediphenol, 4,4''-isopropylidenebis(2-chlorophenol), 4,4''-isopropylidenebis(tert-butylphenol), 4,4''-sec-butylidene diphenol, 4-phenylphenol, 4-hydroxydiphenoxide, methyl-4-hydroxybenzoate, phenyl-4-hydroxybenzoate, 4-hydroxyacetophenone, salicyclic acid anilide, novolak phenol resin. halogenated novolak phenol resin, Alpha -naphthol, Beta -naphthol and p.p''-(1-methyl-n-hexylidene)diphenol.
Claim 7
Dependent Claim
16 words
A composition according to claim 3, wherein the hardener is selected from the group consisting of
Claim 8
Dependent Claim
60 words
A composition according to claim 2, wherein the water soluble binder is selected from the group consisting of hydroxyethyl cellulose, polyvinyl alcohol, styrene-maleic anhydride copolymer, methyl vinyl ether-maleic anhydride copolymer, styrene-phthalic anhydride copolymer, carboxymethyl cellulose, gum arabic, gelatin, casein, vinyl acetate-crotonic acid copolymer, acrylamide-acrylic acid copolymer partially succinated polyvinyl alcohol, N,N''-dimethylmaleamic acid-methacrylic acid dimethylamide copolymer and vinyl acetatemaleic acid copolymer.
Claim 9
Dependent Claim
16 words
A composition according to claim 2, wherein the hardener is selected from the group consisting of
Claim 10
Dependent Claim
19 words
A heat-sensitive recording sheet which comprises a support and, coated thereon, the aqueous dispersion composition defined in claim 2.
Claim 11
Dependent Claim
17 words
A recording sheet according to claim 9, wherein the hardener is selected from the group consisting of
Claim 12
Dependent Claim
13 words
A dry heat-sensitive recording sheet prepared by drying the sheet of claim 9.
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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) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |