Wettable and dispersible powders
Abstract
Abstract A WETTABLE AND DISPERSIBLE POWDER OF A WATER-INSOLUBLE SOLID IS PRODUCED BY ADMIXING A MOIST CAKE OF THE SOLID WITH A DISPERSING AGENT AND A WETTING AGENT TO PRODUCE A PUMPING SLURRY OF FINELY DIVIDED SOLID IN WATER, AND THEREAFTER DRYING THE SLURRY. THE DRIED PRODUCT, WHEN ADDED TO WATER, RAPIDLY FORMS DISPERSION OF FINELY DIVIDED PARTICLES WHICH CAN BE STORED WITH GREATLY REDUCED TENDENCY TOWARD SETTLING AND, IF SETTING OCCURS AFTER EXTENDED STORAGE, CAN BE REDISPERSED EASILY WITH AGITATION. WHEN DRYING IS EFFECTED BY SPRAY DRYING THERE IS OBTAINED A FREE-FLOWING PRODUCT COMPOSED OF GENERALLY SPHERICAL AGGLOMERATES OF THE FINELY DIVIDED SOLID. THE INVENTION IS OOF PARTICULAR UTILITY FOR PROVIDING VERY HIGH ASSAY WETTABLE BIOCIDE POWDERS WHICH CAN BE APPLIED AS A SPRAY.
Inventors
- 👤 K Karsten
- 👤 C Bradley
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |