US3647728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparations of polyaddition products processes for their manufacture and use
Assignee: BASF Schweiz AG
•
Filing: 1969-07-29
•
Granted: 1972-03-07
•
Expires: 1989-07-29
Abstract
Abstract POLYADDITION PRODUCTS ARE PREPARED BY REACTING EPOXIDES WITH BASIC POLYAMIDES IN AN EQUILVALENT RATIO OF 1:1 TO 1:5. THE POLYAMIDESW ARE FROM POLYMERIC UNSATURATED FATTY ACIDS AND POLYALKYLENT POLYAMINES. THE REACTION IS CARRIED OUT IN THE PRESENCE OF ORGANIC SOLVENTS AT AT MOST 80*C. NO LATER THAN AFTER COMPLETION OF THE REACTION, IT IS ENSURED THAT A SAMPLE OF THE REACTION MIXTURE HAS A PHVALUE OF 2 TO 8 AFTER DILUTIOIN WITH WATER. THE RESULTING POLYADDITION PRODUCTS ARE SOLUBLE OR DISPERSIBLE IN WATER AND ARE USEFUL IN THE TEXTILE INDUSTRY E.G. FOR RENDERING WOOL NON-FELTING OR FOR RENDERING TEXTILES WATER REPELLENT, WHEN APPLIED IN COMBINATION WITH SILICONE OILS.
Inventors
- 👤 Alberto Deflorin
- 👤 Heinz Abel
- 👤 Alfred Berger
- 👤 Richard Casty
- 👤 Rosemarie Toepfl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:28
CPC Classifications
C; C08; C08L; C08L63/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |