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Title: Process for producing granular composition for use in agriculture and horticulture
Claims: What we claim is: 1. A process for producing an agricultural or horticultural granular composition having at least 80% of particles having a size of from 105 microns (150 mesh) to 297 microns (48 mesh) which comprises mixing an effective amount of an agricultural or horticultural active ingredient and 1 to 10% by weight based on the total weight of the composition of a liquid medium or a liquid medium and a binder soluble therein, with a carrier having the following particle size distribution: less than 30% by weight of particles larger than 149 microns (100 mesh), but which wholly pass through a size of 297 microns (48 mesh); and 10to 30% by weight of particles smaller than 46 microns (300 mesh); the balance being of particles within the range of 149 microns (100 mesh) to 46 microns (300 mesh), using a stirring-type mixer for 10 to 30 minutes to make granules whereby the granulation is completed and then drying. 2. The process of claim 1 wherein the liquid medium is water. 3. The process of claim 2 wherein the active ingredient is selected from the group consisting of an insecticide, fungicide and herbicide. 4. The process of claim 2 wherein the amount of the water is 2 to 6%, by weight, based on the total weight of the composition. 5. The process of claim 2 wherein said binder is a member selected from the group consisting of a lignin-sulfonate, carboxymethyl cellulose, polyvinyl alcohol, starch, sodium alginate, an acrylic resin, rosin, a coumarone resin, a petroleum resin, shellac and gelatin and said binder is present in an amount of 0.5 to 5% by weight based on the total weight of the composition. 6. The process of claim 2 wherein the carrier is a mineral selected from the group consisting of kaolinite-type clay, talc, bentonite perlite, pumice, silica rock and mixtures thereof. 7. The process of claim 1 wherein said stirring-type mixer is a nauta mixer, a ribbon blender, or a kneader. Other info: Inventors: Muramoto, Noboru (Ikeda, JA) Okamoto, Yukikazu (Toyonaka, JA) Kamaya, Kazuo (Minoo, JA) Kawaji, Kunihiro (Hirakata, JA) Shiraki, Makoto (Ibaragi, JA) Application Number: 515377 Filing Date: 1974-10-16 Publication_date: 1976-09-14 Assignee: Sumitomo Chemical Company, Limited (Osaka, JA) Primary Class(es): 504/361 424/417, 424/419, 504/367, 514/132, 514/951 Other Classes: US Patent Ref:
Other Refs: Other References: Granulation and Apparatus Therefor, Japanese Mechanical Association, p. 6, 1967. Konac et al., Food Engineering, Aug. 1962, pp. 41-44. | |