View source for 20250154075. Integrated-preparati (NORTH UNIVERSITY OF CHINA)

= INTEGRATED-PREPARATION AND APPLICATION METHODS OF UREA-FORMALDEHYDE (UF)-BASED MULTI-NUTRIENT BIODEGRADABLE POLYMERIC SLOW-RELEASE (SR) LIQUID AND GRANULAR FERTILIZERS =

'''Abstract''':
a method for integrally preparing urea-formaldehyde (uf)-based multi-nutrient biodegradable polymeric slow-release (sr) liquid and granular fertilizers is provided. a hydroxymethylurea solution is prepared, and a part of the hydroxymethylurea solution is added to a reactor for reaction to obtain the uf-based multi-nutrient biodegradable polymeric sr liquid fertilizer. the rest of the hydroxymethylurea solution is fed into a reaction-extrusion integrated machine for reactive extrusion to obtain a uf polymer through the polycondensation reaction, which is extruded, dried and granulated to obtain the uf-based multi-nutrient biodegradable polymeric sr granular fertilizer. a method for applying such liquid and granular fertilizers is also provided.

'''Inventor(s)''': [[:Category:Yaqing LIU of Taiyuan  CN|Yaqing LIU]], [[:Category:Yang XIANG of Taiyuan  CN|Yang XIANG]], [[:Category:Wenqi WANG of Taiyuan  CN|Wenqi WANG]], [[:Category:Guizhe ZHAO of Taiyuan  CN|Guizhe ZHAO]]

'''CPC Classification''': [[:Category:CPC_C05C9/02|C05C9/02]] (NITROGENOUS FERTILISERS)


[[Category:Patent Applications]]
[[Category:NORTH UNIVERSITY OF CHINA]]
[[Category:CPC_C05C9/02]]
[[Category:Yaqing LIU of Taiyuan  CN]]
[[Category:Yang XIANG of Taiyuan  CN]]
[[Category:Wenqi WANG of Taiyuan  CN]]
[[Category:Guizhe ZHAO of Taiyuan  CN]]

[https://wikipatents.org/index.php?search=20250154075+rejection&title=Special%3ASearch&wprov=acrw1_-1 Search for rejections for patent application number 20250154075]


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