Synthesis method for preparing polyurethane-coated polyether polyol for controlled-release fertilizer at room temperature
The invention belongs to the technical field of synthesis of polyether polyol, and particularly relates to a synthesis method of polyurethane coated polyether polyol for preparing a controlled release fertilizer at room temperature. According to the synthesis method, a polyol compound is used as an...
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| creator | HOU PEIDONG MU XIAOXIAO LI SHUAI XU WEI JIA SHIQIAN |
| description | The invention belongs to the technical field of synthesis of polyether polyol, and particularly relates to a synthesis method of polyurethane coated polyether polyol for preparing a controlled release fertilizer at room temperature. According to the synthesis method, a polyol compound is used as an initiator and is catalyzed by a catalyst, and the polyol compound and an epoxy compound are subjected to a polymerization reaction to prepare the epoxy resin. Wherein the polyol compound is one or more of glycerol, propylene glycol, diethylene glycol, ethylene glycol, pentaerythritol, castor oil, palm oil, corn oil, rapeseed oil, soybean oil or sunflower oil; the epoxy compound is a mixture of ethylene oxide and epoxypropane, and the mass of the ethylene oxide accounts for 20% or above of the total mass of the epoxy compound. The polyether polyol can be applied to a slow/controlled release fertilizer coating, has the characteristics of low cost, room-temperature coating, degradability, environmental friendliness an |
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According to the synthesis method, a polyol compound is used as an initiator and is catalyzed by a catalyst, and the polyol compound and an epoxy compound are subjected to a polymerization reaction to prepare the epoxy resin. Wherein the polyol compound is one or more of glycerol, propylene glycol, diethylene glycol, ethylene glycol, pentaerythritol, castor oil, palm oil, corn oil, rapeseed oil, soybean oil or sunflower oil; the epoxy compound is a mixture of ethylene oxide and epoxypropane, and the mass of the ethylene oxide accounts for 20% or above of the total mass of the epoxy compound. 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| subjects | CHEMISTRY COMPOSITIONS BASED THEREON FERTILISERS FERTILISERS CHARACTERISED BY THEIR FORM MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MANUFACTURE THEREOF METALLURGY MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENTSUBCLASSES OF CLASS C05 MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVINGA SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES,SOIL-CONDITIONERS, WETTING AGENTS ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP |
| title | Synthesis method for preparing polyurethane-coated polyether polyol for controlled-release fertilizer at room temperature |
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