Abstract: The invention relates to a coated granular fertilizer having a film covering fertilizer granules. This film comprises a polyurethane resin prepared by a method comprising the steps of (a) reacting an aromatic polyisocyanate with a first polyol component (i.e., castor oil or a castor oil derivative), thereby to obtain a prepolymer having terminal isocyanate groups in the molecule; and (b) reacting the prepolymer with a second polyol component (i.e., castor oil or a castor oil derivative) and a third polyol component which is an amine having at least two hydroxyl groups in the molecule, thereby to cure the prepolymer and thus to prepare the polyurethane resin. The invention relates to another coated granular fertilizer having a film covering fertilizer granules. This film comprises a urethane resin and aqueous-fluid-absorbing particles having a particle diameter of from 1 to 200 &mgr;m. This urethane resin may be the above polyurethane resin.

Abstract: The invention relates to a coated granular fertilizer having a film covering fertilizer granules. This film comprises a polyurethane resin prepared by a method comprising the steps of (a) reacting an aromatic polyisocyanate with a first polyol component (i.e., castor oil or a castor oil derivative), thereby to obtain a prepolymer having terminal isocyanate groups in the molecule; and (b) reacting the prepolymer with a second polyol component (i.e., castor oil or a castor oil derivative) and a third polyol component which is an amine having at least two hydroxyl groups in the molecule, thereby to cure the prepolymer and thus to prepare the polyurethane resin. The invention relates to another coated granular fertilizer having a film covering fertilizer granules. This film comprises a urethane resin and aqueous-fluid-absorbing particles having a particle diameter of from 1 to 200 &mgr;m. This urethane resin may be the above polyurethane resin.

Abstract: The invention provides a first water-based fluorine-containing paint including a water-based emulsion containing a fluorine-containing copolymer dispersed therein, and 1-50 parts by weight of a hardener per 100 parts by weight of the copolymer. The copolymer is prepared by copolymerizing 30-65 mol % of a fluoroolefin, 14-69 mol % of a copolymerizable vinyl-containing compound, and 1-30 mol % of a hydroxyl-containing compound and/or a polymerizable carboxyl-containing compound. The hardener is prepared by mixing 1 part by weight of a self-emulsifiable polyisocyanate with 0.01-1 part by weight of a compound containing in the molecule an oxyethylene unit and an alkoxysilyl group. When mixed with the emulsion, the hardener becomes well dispersed therein.

Abstract: The present invention relates to a water-based fluorine-containing emulsion. This emulsion contains a fluorine-containing copolymer in a disperse phase thereof This copolymer is prepared by copolymerizing: (A) a fluoroolefin, (B) an organosilicon compound containing an olefinic unsaturated bond and an alkoxysilyl group, (C) an unsaturated carboxylic acid represented by a general formula of CH.sub.2 .dbd.CH--(CH.sub.2).sub.n --COOH where n is an integer of from 3 to 15, and (D) at least one other copolymerizable monomer. A paint prepared from the emulsion is superior in storage stability and mechanical stability, although this paint belongs to a one-package paint. A coated film formed by applying the paint is superior in water resistance in its early stages, stain resistance, and weather resistance.

Abstract: The invention provides a first water-based fluorine-containing paint including a water-based emulsion containing a fluorine-containing copolymer dispersed therein, and 1-50 parts by weight of a hardener per 100 parts by weight of the copolymer. The copolymer is prepared by copolymerizing 30-65 mol % of a fluoroolefin, 14-69 mol % of a copolymerizable vinyl-containing compound, and 1-30 mol % of a hydroxyl-containing compound and/or a polymerizable carboxyl-containing compound. The hardener is prepared by mixing 1 part by weight of a self-emulsifiable polyisocyanate with 0.01-1 part by weight of a compound containing in the molecule an oxyethylene unit and an alkoxysilyl group. When mixed with the emulsion, the hardener becomes well dispersed therein.

Abstract: The invention provides a novel coating composition comprising a first component (i.e. 100 parts by weight of a fluorine-containing copolymer), a second component (i.e. 0.1-20 parts by weight of an alkyl silicate), and a third component (i.e. 0.05-3 parts by weight of a water-soluble polyether-modified silicone oil and/or 1-25 parts by weight of a polyoxytetramethylene glycol). The fluorine-containing copolymer has a hydroxyl value of 80-200 mg KOH per 1g thereof and is prepared by copolymerizing 40-65 mol % of a fluoroolefin, 14-50 mo1% of a copolymerizable vinyl-containing compound, 12-25 mol % of a polymerizable hydroxyl-containing compound, and 0.1-12 mol % of at least one other copolymerizable compound. A cured coated film prepared from the coating composition is superior in elasticity and weathering and stain resistances.