Patent US3558501A successfully refreshed from Google Patents.
US3558501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the chlorohydrination of allyltrimethylammonium chloride
Assignee: United States Department of Agriculture
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Filing: 1969-05-01
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Granted: 1971-01-26
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Expires: 1989-05-01
Abstract
Abstract ALLYTRIMETHYLAMMONIUM CHLORIDE REACTED WITH HYPOCHLOROUS ACID IN AQUEOUS SOLUTION AT 25* TO 32*C. FORMS A MIXTURE OF MONOCHLOROHYDROXYPROPYLTRIMETHYLAMMONIUM CHLORIDES IN NEARLY QUANTITATIVE YIELD WITH ESSENTIALLY NO FORMATION OF DICHLOROPROPYLTRIMETHYLAMMONIUM CHLORIDE. THE PRODUCT IS OF VALUE FOR REAC TION WITH STARCH AND CELLULOSE TO PRODUCE INDUSTRIAL CATIONIC POLYSACCHARIDES.
Inventors
- 👤 Thomas A Mcguire
- 👤 Charles L Mehltretter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:21
CPC Classifications
C; C08; C08B; C08B11/00; C08B11/02; C08B11/04; C08B11/14; C08B11/145; C08B31/00; C08B31/08; C08B31/12; C08B31/125; C08B37/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |