US2610156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of nonionic surface active agent in preparation of anionic resin in bead from
Assignee: Wyeth Holdings LLC
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Filing: 1949-02-17
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Granted: 1952-09-09
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Expires: 1969-02-17
Abstract
No abstract record available.
Inventors
- 👤 Lennart A Lundberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:29
CPC Classifications
B; B01; B01J; B01J41/00; B01J41/08; B01J41/12; B01J41/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A PROCESS WHICH COMPRISES DISPERSING AN AQUEOUS SYRUP OF A PARTIALLY CONDENSED RESIN CAPABLE OF BEING CURED TO A WATER-INSOLUBLE ANION ACTIVE PRODUCT IN AN INERT, ORGANIC NON-SOLVENT LIQUID WHICH HAS A BOILING POINT OF AT LEAST 70* C. AND THE DENSITY OF WHICH IS SUBSTANTIALLY EQUIVALENT TO THAT OF SAID AQUEOUS RESIN SYRUP, WITH MECHANICAL AGITATION IN THE PRESENCE OF A NONIONIC SURFACE ACTIVE AGENT WHICH IS AN ETHYLENE OXIDE ADDITION PRODUCT, MAINTAINING THE DISPERSION AT AN ELEVATED TEMPERATURE UNTIL THE RESIN GELS, AND FINALLY CURING THE GELLED RESIN OBTAINED BY HEATING, SUFFICIENT AGITATION BEING PROVIDED THROUGHOUT THE HEATING TO PREVENT COAGULATION OF THE DISPERSION.
Claim 2
Dependent Claim
106 words
A PROCESS WHICH COMPRISES DISPERSING AN AQUEOUS SYRUP OF A PARTIALLY CONDENSED RESIN CAPABLE OF BEING CURED TO A WATER-INSOLUBLE ANION ACTIVE PRODUCT IN AN INERT, ORGANIC NON-SOLVENT LIQUID WHICH HAS A BOILING POINT OF AT LEAST 70* C. AND THE DENSITY OF WHICH IS SUBSTANTIALLY EQUIVALENT TO THAT OF SAID AQUEOUS RESIN SYRUP, WITH MECHANICAL AGITATION IN THE PRESENCE OF A NONIONIC SURFACE ACTIVE AGENT WHICH IS AN ETHYLENE OXIDE ADDITION PRODUCT, MAINTAINING THE DISPERSION AT AN ELEVATED TEMPERATURE UNTIL THE RESIN GELS, AND FINALLY CURING THE GELLED RESIN OBTAINED BY HEATING, SUFFICIENT AGITATION BEING PROVIDED THROUGHOUT THE HEATING TO PREVENT COAGULATION OF THE DISPERSION.
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) | 1955-09-09 | 1956-03-10 | 1956-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-09 | 1960-03-10 | 1960-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-09 | 1964-03-10 | 1964-09-09 | $7700.00 | Window Closed / Lapsed |