US4235769A
Expired / Lapsed
US
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Color-developing phenolic-aldehyde composition for pressure-sensitive recording sheet material and process for the preparation thereof
Assignee: Mitsui Toatsu Chemicals Inc
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Filing: 1979-01-19
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Granted: 1980-11-25
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Expires: 1999-01-19
Abstract
Abstract Disclosed is a color-developing composition for pressure-sensitive recording sheet material of the self-contained type comprising (A) 100 parts by weight of a copolymer obtained by reacting a p-alkylphenol having an alkyl moiety of from 1 to 12 carbon atoms and phenol with formaldehyde and (B) from 1 to 20 parts by weight of a hindered phenolic compound selected from phenols having an alkyl, alkylene or hydroxyl substituent radical in at least the 2- or 6-position, or both, of the benzene ring and derivatives thereof, the copolymer and the hindered phenolic compound being homogeneously dissolved in mutual solution. The hindered phenolic compound is either added to the starting materials for the preparation of the copolymer or, at the end of the copolymerization reaction, added to the resulting copolymer and dissolved homogeneously in mutual solution.
Inventors
- 👤 Makoto Asano
- 👤 Saburo Kawashima
- 👤 Kenichi Sugimoto
- 👤 Tadashi Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:05
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/155; C08G; C08G8/00; C08G8/04; C08G8/08; C08G8/24; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31942; Y10T428/31949; Y10T428/31964; Y10T428/31967
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
94 words
A color-developing composition for pressure-sensitive recording sheet material of the self-contained type comprising (A) a copolymer obtained by reacting at least one p-alkylphenol selected from the group consisting of compounds having the general formula: ##STR3## where R is an alkyl radical containing from 1 to 12 carbon atoms, and phenol with formaldehyde and (B) from 1 to 20 parts by weight, based on 100 parts by weight of (A), of a hindered phenolic compound selected from the group consisting of 6-(4-hydroxy-3,5-di-tert-butylanilino)-2,4-bis(alkylthio)-1,3,5-triazines, the copolymer and the hindered phenolic compound being homogeneously dissolved in mutual solution.
Claim 2
Dependent Claim
94 words
A color-developing composition for pressure-sensitive recording sheet material of the self-contained type comprising (A) a copolymer obtained by reacting at least one p-alkylphenol selected from the group consisting of compounds having the general formula: ##STR3## where R is an alkyl radical containing from 1 to 12 carbon atoms, and phenol with formaldehyde and (B) from 1 to 20 parts by weight, based on 100 parts by weight of (A), of a hindered phenolic compound selected from the group consisting of 6-(4-hydroxy-3,5-di-tert-butylanilino)-2,4-bis(alkylthio)-1,3,5-triazines, the copolymer and the hindered phenolic compound being homogeneously dissolved in mutual solution.
Claim 3
Dependent Claim
23 words
The composition of claim 1 wherein R in the general formula (I) is an alkyl radical containing from 4 to 10 carbon atoms.
Claim 4
Dependent Claim
16 words
The composition of claim 1 wherein R in the general formula (I) is a tert-octyl radical.
Claim 5
Dependent Claim
16 words
The composition of claim 1 wherein R in the general formula (I) is a tert-butyl radical.
Claim 6
Dependent Claim
20 words
The composition of claim 1 wherein the molar ratio of the p-alkylphenol to the phenol ranges from 0.3 to 5.
Claim 7
Dependent Claim
14 words
The composition of claim 1 wherein the molar ratio ranges from 0.5 to 3.
Claim 8
Dependent Claim
27 words
The composition of claim 1 wherein the molar ratio of the formaldehyde to the combined amount of the p-alkylphenol and the phenol ranges from 0.6 to 1.0.
Claim 9
Dependent Claim
35 words
The composition of claim 1 wherein the copolymer is obtained by reacting the p-alkylphenol and the phenol with the formaldehyde at a temperature of from 70° to 180° C. in the presence of a catalyst.
Claim 10
Dependent Claim
18 words
The composition of claim 1 wherein the copolymer has a softening point of from 70° to 120° C.
Claim 11
Dependent Claim
18 words
The composition of claim 1 wherein the copolymer has a softening point of from 90° to 110° C.
Claim 12
Dependent Claim
14 words
The composition of claim 1 wherein the 6-(4-hydroxy-3,5-di-tert-butylanilino)-2,4-bis(alkylthio)-1,3,5-triazine is 6-(4-hydroxy-3,5-di-tert-butylanilino)-2,4-bis(n-butylthio)-1,3,5-triazine, 6-(4-hydroxy-3,5-di-tert-butylanilino)-2,4-bis(n-octylthio)-1,3,5-triazine, 6-(4-hydroxy-3,5-di-tert-butylanilino)-2,4-bis(tert-octylthio)-1,3,5-trianine, or 6-(4-hydroxy-3,5-di-tert-butylanilino)-2,4-bis(n-nonylthio)-1,3,5-triazine
Claim 13
Dependent Claim
12 words
The composition of claim 1 wherein the hindered phenolic compound is 6-(4-hydroxy-3,5-di-tert-butylanilino)-2,4-bis(n-octylthio)-1,3,5-triazine.
Claim 14
Dependent Claim
17 words
The composition of claim 1 wherein the p-alkylphenol is p-tert-octylphenol and the hindered phenolic compound is 6-(4-hydroxy-3,5-di-tert-butylanilino)-2,4-bis(n-octylthio)-1,3,5-triazine.
Claim 15
Dependent Claim
23 words
The composition of claim 1 wherein the hindered phenolic compound is present in an amount of from 2 to 15 parts by weight.
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) | 1983-11-25 | 1984-05-26 | 1984-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-25 | 1988-05-26 | 1988-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-25 | 1992-05-26 | 1992-11-25 | $7700.00 | Window Closed / Lapsed |