A kind of bio-based aromatic hydrocarbon polyester polyol for controlled release fertilizer and application thereof
A polyester polyol, bio-based technology, applied in the field of controlled-release fertilizers, can solve the problems that the release of controlled-release fertilizers cannot be achieved, the effect of nutrient controlled-release is weakened, etc., and achieve the effect of moderate viscosity and less dosage.
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[0039] The present invention will be further described below in combination with embodiments, so that anyone skilled in the art can make and use the present invention. The embodiments in the following description are by way of example only and modifications will be apparent to those skilled in the art. The general principles defined in the following description will apply to other embodiments, alternatives, modifications, equivalent implementations and applications without departing from the spirit and scope of the invention.
[0040] The main raw material of controlled-release fertilizer polyurethane material coating in the following examples is: bio-based aromatic hydrocarbon polyester polyol (the present invention), castor oil (Tongliao, Inner Mongolia), plasticizer epoxy soybean oil (Guangzhou Jiangyan Chemical Technology Co., Ltd. ), crude MDI (Yantai Wanhua Chemical Group), urea.
[0041] 1. The process of controlled-release fertilizer coating embodiment 1 mainly includ...
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