US3269964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water dispersible form of dialdehyde polysaccharides and process therefor
Assignee: Bayer Corp
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Filing: 1964-10-26
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Granted: 1966-08-30
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Expires: 1984-10-26
Abstract
No abstract record available.
Inventors
- 👤 Curtis James Huey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:08
CPC Classifications
C; C08; C08B; C08B31/00; C08B31/18; C08B31/185
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
66 words
A COMPOSITION DISPERSIBLE IN WATER AT ROOM TEMPERATURE COMPRISING THE FINELY-DIVIDED SOLIDIFIED REACTION PRODUCT OF ABOUT 15-30 PARTS BY WEIGHT OF A CONDENSATION PRODUCT OF DICYANDIAMIDE AND FORMALDEHYDE AND ABOUT 70-85 PARTS BY WEIGHT DIALDEHYDE POLYSACCHARIDES WHEREIN FROM ABOUT 0.5 TO ABOUT 100 UNITS OUT OF 100 OF THE ORIGINAL ANHYDROGLUCOSE UNITS OF THE ORIGINAL POLYSACCHARIDES HAVE BEEN OXIDIZED TO DIALDEHYDE UNITS REPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
66 words
A COMPOSITION DISPERSIBLE IN WATER AT ROOM TEMPERATURE COMPRISING THE FINELY-DIVIDED SOLIDIFIED REACTION PRODUCT OF ABOUT 15-30 PARTS BY WEIGHT OF A CONDENSATION PRODUCT OF DICYANDIAMIDE AND FORMALDEHYDE AND ABOUT 70-85 PARTS BY WEIGHT DIALDEHYDE POLYSACCHARIDES WHEREIN FROM ABOUT 0.5 TO ABOUT 100 UNITS OUT OF 100 OF THE ORIGINAL ANHYDROGLUCOSE UNITS OF THE ORIGINAL POLYSACCHARIDES HAVE BEEN OXIDIZED TO DIALDEHYDE UNITS REPRESENTED BY THE FORMULA:
Claim 3
Dependent Claim
113 words
A PROCESS FOR PREPARING A COMPOSITION DISPERSIBLE IN WATER AT ROOM TEMPERATURE WHICH COMPRISES MIXING IN WATER ABOUT 70-85 PARTS BY WEIGHT DIALDEHYDE POLYSACCHARIDES WITH ABOUT 15-30 PARTS BY WEIGHT CONDENSATION PRODUCT OF DICYANDIAMIDE AND FORMALDEHYDE TO FORM A SLURRY CONTAINING ABOUT 20-30 WEIGHT PERCENT SOLIDS, REACTING THE NON-AQUEOUS CONSTITUENTS OF THE SLURRY WITH EACH OTHER BY HEATING THE SLURRY WITH STIRRING TO ABOUT 70*100*C., MAINTAINING THE SLURRY AT ABOUT 70*-100*C. WITH STIRRING FOR ABOUT 10-15 MINUTES UNTIL THE DISPERSION OF THE SOLID MATERIAL IS COMPLETE, COOLING THE DISPERSION TO ABOUT 70*C., ADJUSTING THE PH OF THE DISPERSION OF ABOUT 4-5.5 AND THEN DRYING THE DISPERSION AND COLLECTING THE FINELY-DIVIDED DRIED SOLIDIFIED PRODUCT.
Claim 4
Dependent Claim
113 words
A PROCESS FOR PREPARING A COMPOSITION DISPERSIBLE IN WATER AT ROOM TEMPERATURE WHICH COMPRISES MIXING IN WATER ABOUT 70-85 PARTS BY WEIGHT DIALDEHYDE POLYSACCHARIDES WITH ABOUT 15-30 PARTS BY WEIGHT CONDENSATION PRODUCT OF DICYANDIAMIDE AND FORMALDEHYDE TO FORM A SLURRY CONTAINING ABOUT 20-30 WEIGHT PERCENT SOLIDS, REACTING THE NON-AQUEOUS CONSTITUENTS OF THE SLURRY WITH EACH OTHER BY HEATING THE SLURRY WITH STIRRING TO ABOUT 70*100*C., MAINTAINING THE SLURRY AT ABOUT 70*-100*C. WITH STIRRING FOR ABOUT 10-15 MINUTES UNTIL THE DISPERSION OF THE SOLID MATERIAL IS COMPLETE, COOLING THE DISPERSION TO ABOUT 70*C., ADJUSTING THE PH OF THE DISPERSION OF ABOUT 4-5.5 AND THEN DRYING THE DISPERSION AND COLLECTING THE FINELY-DIVIDED DRIED SOLIDIFIED PRODUCT.
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) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |