US3594328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the encapsulation of dispersible materials
Assignee: BASF Schweiz AG
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Filing: 1969-12-09
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Granted: 1971-07-20
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Expires: 1989-12-09
Abstract
Abstract AN ENCAPSULATION PROCESS IS PROVIDED WHEREIN THE SUBSTANCE TO BE ENCAPSULATED IS DISPERSED IN A LIQUID WITH WHICH IT IS SUBSTANTIALLY IMMISCIBLE IN THE PRESENCE OF A TENSIDE CAPABLE OF FORMING A COMPOUND THAT IS INSOLUBLE IN THE DISPERSING LIQUID AND THEREAFTER THE TENSIDE IN THE DISPERSION, WHICH IS IN ASSOCIATION WITH THE SUBSTANCE, IS CONVERTED INTO THE IRREVERSIBLY INSOLUBLE STATE TO ENCAPSULATE THE SUBSTANCE. PARTICULARLY SUITABLE A TENSIDES ARE THE SURFACE-ACTIVE, CROSS-LINKABLE AMINOPLASTS, PREFERABLY SURFACE-ACTIVE, ETHERIFIED METHYLOMELAMINES OR THE CORRESPONDING METHYLOLUREAS.
Inventors
- 👤 Luzius Schibler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:09
CPC Classifications
C; C08; C08L; C08L61/00; C08L61/20; C08L61/32; B; B01; B01J; B01J13/00; B01J13/02; B01J13/06; B01J13/08; C08G; C08G12/00; C08G12/02; C08G12/40; C08G12/42; C08G12/421; C08G12/422; C08G12/424; C08G12/425; C08G12/427
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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |