the series of inert mineral gypsum granules or dust rulenta properties tampons for specific use in the area of pesticides, fertilizers fogliari of fertilizers for the soil

摘要

1483644 Modified gypsum particles B FABBIAN 5 Aug 1974 [24 Aug 1973] 34397/74 Heading C1A Absorbent materials in granular or powder form with absorbent properties for use in pesticides, foliar fertilizers and earth fertilizers are produced by: (i) calcining calcium sulphate to produce calcined gypsum, a, #, or hydraulic gypsum: (ii) adding water to disperse or dissolve the product and allowing settling to occur: (iii) adding further material selected from a double sulphate of Al and K, a non-ionic and/or anionic and/or cationic surfactant. urea, a glycol, hexamethylane tetramine, polymerized vegetable adhesive, polymerized vegetable oil, polyvinyl chloride or polyvinyl acetate and: (iv) drying to give a product which is ground or pelletized into powdered or granular form and which has essentially no acidic centres, no surface catalytic activity and no ionexchange capacity.