Process for the preparation of water-dispersible granules

Details Process for the preparation of water-dispersible granules Process for the preparation of water-dispersible granules

1990-03-20

1997-05-13

Lander, Ferris

Chemistry: physical processes

Physical processes

Agglomerating

424405, C22B 114, A01N 2500

Patent

active

056288000

ABSTRACT:
Granules can be prepared from powders of active compounds by the counter-current principle by fluidization in a stream of air and spraying of a solution of adhesive. Dispersions or solutions of active compounds can be granulated in accordance with the invention if the aqueous dispersion or solution is sprayed by the counter-current principle into the gas stream of a fluidizing chamber and is caused to fluidize, the formation of granules being started, in a start-up phase, at 10 to 60% of the maximum gas flow and at only up to 30% of the maximum feed rate of dispersion or solution, and subsequently the feed rate and the gas flow are increased up to the maximum values for the feed rate and the gas flow, and, in the main phase, the formation of granules is continued at maximum gas flow and maximum feed rate.
Granules prepared in this way, containing pesticides as the active compounds, can be used as plant protection agents or pest control agents.

REFERENCES:
patent: 2689973 (1954-09-01), Lee et al.
patent: 3748103 (1973-07-01), Bean et al.
patent: 3849233 (1974-11-01), Lykov et al.
patent: 3920442 (1975-11-01), Albert et al.
patent: 4134725 (1979-01-01), B uchel et al.
patent: 4619843 (1986-10-01), Mutsers
patent: 4701353 (1987-10-01), Mutsers et al.
patent: 4936901 (1990-06-01), Surgant, Sr. et al.
patent: 4968500 (1990-11-01), Bertsch-Frank et al.
H.B. Ries, Hardheim, Granuliertechnik und Granulierger ate Aufbereitungstechnik, Nr. 3, (1970) No month 1.-4. Leil, S. 147 ff (Minimals--no translation).
D. Jones et al., Introduction to Fluid Bed Granulation Glatt GmbH in D-7851 Binzen/L orrach No Date.
M. Rosch et al., Verfahrenstechnik, vol. 9, Nr. 2, (1975), S. 59 ff. Minimal--no translation.

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