Process of preventing agglomeration of fertilizers
Abstract
Abstract A granular fertilizer is treated with an anti-caking agent consisting of an aqueous solution of (1) a substantially waterinsoluble polymer of polyvinyl acetate, polyvinyl acetals, partially saponified polyvinyl acetate, partially acetylated polyvinyl alcohol, esters of polyacrylic acid and an aliphatic alcohol, or copolymers thereof with another copolymerizable monomer, dissolved in (2) an aqueous solution of alkyl sulfates, Alpha -olefin sulfonates or alkylsulfonates containing six to 10 carbon atoms or alkylbenzenesulfonates in which the alkyl radical contains four to eight carbon atoms. The treated fertilizer product can be packed in polyethylene bags without causing tearing or the bags during storage.
Inventors
- 👤 Iwao Maruta
- 👤 Haruhiko Arai
- 👤 Moriyasu Murata
Bibliographic Details
Claims Analysis
Total Claims: 2References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |