US2944034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dialdehyde sugar reaction products, process for preparing same and printing ink prepared therefrom
Assignee: National Sugar Refining Co
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Filing: 1956-01-04
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Granted: 1960-07-05
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Expires: 1976-01-04
Abstract
No abstract record available.
Inventors
- 👤 Ronald J Baird
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:30
CPC Classifications
C; C08; C08B; C08B37/00; Y; Y10; Y10S; Y10S260/00; Y10S260/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A PROCESS FOR PREPARING A SOLVENT-SOLUBLE CONDENSATION PRODUCT OF A DIALDEHYDE AND A SUGAR, WHICH COMPRISES ALLOWING A DIALDEHYDE AND A SUGAR HAVING AT LEAST FOUR HYDROXYL GROUP SO RELATIVELY POSITIONED AS TO PRESENT AT LEAST TWO PAIRS OF HYDROXYLS, WITH EACH PAIR HAVING ITS HYDROZYLS SEPARATED BY UNDER FOUR CARBON ATOMS, TO REACT TOGETHER IN A RATIO SUCH THAT THERE ARE AT LEAST THREE TO ABOUT SIXTEEN MOLES OF HYDROXYL GROUP IN THE SUGAR REACTANT PER MOL OF ALDEHYDE, IN A REACTION MEDIUM WHICH HAS A PH BELOW THAT WHICH EXCEEDS PH 7 AND IS A SOLVENT FOR AT LEAST ONE OF THE REACTANTS, AT AN ELEVATED TEMPERATURE FROM ABOUT 50*C. TO UNDER THAT AT WHICH DECOMPOSITION OF EITHER REACTANT OCCURS, AND FOR A TIME SUFFICIENT FOR THEM TO CONDENSE TOGETHER WITH THE ELIMINATION OF WATER, AND REMOVING THE WATER OF CONDENSATION THUS FORMED AND ALSO ANY OTHER WATER INTRODUCED AS REACTION MEDIUM, THEREBY OBTAINING A SOLVENT-SOLUBLE CONDENSATION PRODUCT OF THE DIALDEHYDE AND THE SUGAR.
Claim 2
Dependent Claim
166 words
A PROCESS FOR PREPARING A SOLVENT-SOLUBLE CONDENSATION PRODUCT OF A DIALDEHYDE AND A SUGAR, WHICH COMPRISES ALLOWING A DIALDEHYDE AND A SUGAR HAVING AT LEAST FOUR HYDROXYL GROUP SO RELATIVELY POSITIONED AS TO PRESENT AT LEAST TWO PAIRS OF HYDROXYLS, WITH EACH PAIR HAVING ITS HYDROZYLS SEPARATED BY UNDER FOUR CARBON ATOMS, TO REACT TOGETHER IN A RATIO SUCH THAT THERE ARE AT LEAST THREE TO ABOUT SIXTEEN MOLES OF HYDROXYL GROUP IN THE SUGAR REACTANT PER MOL OF ALDEHYDE, IN A REACTION MEDIUM WHICH HAS A PH BELOW THAT WHICH EXCEEDS PH 7 AND IS A SOLVENT FOR AT LEAST ONE OF THE REACTANTS, AT AN ELEVATED TEMPERATURE FROM ABOUT 50*C. TO UNDER THAT AT WHICH DECOMPOSITION OF EITHER REACTANT OCCURS, AND FOR A TIME SUFFICIENT FOR THEM TO CONDENSE TOGETHER WITH THE ELIMINATION OF WATER, AND REMOVING THE WATER OF CONDENSATION THUS FORMED AND ALSO ANY OTHER WATER INTRODUCED AS REACTION MEDIUM, THEREBY OBTAINING A SOLVENT-SOLUBLE CONDENSATION PRODUCT OF THE DIALDEHYDE AND THE SUGAR.
References Cited (Backward Citations)
DE842075C
Cited
US2702873A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |