US3313641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispersions and process therefor
Assignee: Bayer Corp
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Filing: 1963-11-18
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Granted: 1967-04-11
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Expires: 1983-11-18
Abstract
No abstract record available.
Inventors
- 👤 Borchert Peter Jochen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:50
CPC Classifications
C; C08; C08B; C08B31/00; C08B31/18; C08B31/185; C08K; C08K3/00; C08K3/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A PROCESS FOR PREPARING STABLE DISPERSION OF DIALDEHYDE POLYSACCHARIDES IN WATER WHICH COMPRISES FORMING A SLURRY OF DIALDEHYDE POLYSACCHARIDE IN SUBSTANTIALLY METAL ION-FREE WATER, SAID SLURRY CONTAINING UP TO ABOUT 30 WEIGHT PERCENT SOLIDS, CONTACTING SAID SLURRY WITH FROM ABOUT 0.5 TO ABOUT 2.0 WEIGHT PERCENT HYDROGEN PEROXIDE BASED ON WEIGHT OF DIALDEHYDE POLYSACCHARIDE, SAID CONTACT TAKING PLACE AT A REACTION TEMPERATURE OF FROM ABOUT 75*C. TO ABOUT 95*C. FOR A PERIOD OF FROM ABOUT 30 TO ABOUT 60 MINUTES, AND THEN COOLING THE RESULTING DISPERSION TO ROOM TEMPERATURE.
Claim 2
Dependent Claim
89 words
A PROCESS FOR PREPARING STABLE DISPERSION OF DIALDEHYDE POLYSACCHARIDES IN WATER WHICH COMPRISES FORMING A SLURRY OF DIALDEHYDE POLYSACCHARIDE IN SUBSTANTIALLY METAL ION-FREE WATER, SAID SLURRY CONTAINING UP TO ABOUT 30 WEIGHT PERCENT SOLIDS, CONTACTING SAID SLURRY WITH FROM ABOUT 0.5 TO ABOUT 2.0 WEIGHT PERCENT HYDROGEN PEROXIDE BASED ON WEIGHT OF DIALDEHYDE POLYSACCHARIDE, SAID CONTACT TAKING PLACE AT A REACTION TEMPERATURE OF FROM ABOUT 75*C. TO ABOUT 95*C. FOR A PERIOD OF FROM ABOUT 30 TO ABOUT 60 MINUTES, AND THEN COOLING THE RESULTING DISPERSION TO ROOM TEMPERATURE.
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) | 1970-04-10 | 1970-10-10 | 1971-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-10 | 1974-10-10 | 1975-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-10 | 1978-10-10 | 1979-04-11 | $7700.00 | Window Closed / Lapsed |