Patent US3557073A successfully refreshed from Google Patents.
US3557073A
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US
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Production of a polymer having dihalo-s-triazinyl groups bound thereto
Assignee: NAT RES DEV
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Filing: 1968-06-26
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Granted: 1971-01-19
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Expires: 1988-06-26
Abstract
Abstract A PROCESS FOR THE PRODUCTION OF A POLYMER HAVING DIHALO-S-TRIAZINYL GROUPS BOUND THERETO WHICH COMPRISES CONTACTING A POLYMER HAVING NUCLEOPHILIC GROUPS WITH A SOLUTION OF A CYANURIC HALIDE IN AN INERT WATER-MISCIBLE ORGANIC SOLVENT IN THE PRESENCE OF WATER AND MAINTAINING AN ACID OR NEUTRAL PH AFTER REACTION HAS OCCURED WHEREBY THE TENDENCY TO HYDROLYSIS AND CROSS-LINKING OF THE POLYMER IS SUBSTANTIALLY REDUCED.
Inventors
- 👤 Garth Kay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:38
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/48; C08B; C08B15/00; C08B15/05; C08B15/06; C08G63/00; C08G63/91; C08G63/914; C08G63/916
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |