Water-retaining chitosan bacteriostatic antibiotic fertilizer and preparation method thereof
A chitosan, water-retaining technology, applied in fertilizer mixtures, layered/coated fertilizers, fertilization devices, etc., can solve the problems of inability to promote and long-term application of bacteriostatic agents, difficult residues to degrade, and large soil impact. , to achieve the effect of easy promotion and long-term application, widely adjustable release cycle, and high gel strength
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0036] Firstly, acrylic acid with a neutralization degree of 75% is miscible with a certain amount of water and placed in a 500ml three-necked flask, and the same amount of initiator in the PEG solution is added to the acrylic acid at 50°C and stirred for 15 minutes. When the temperature was raised to 80°C, the PVA solution and a certain amount of mixed solution of crosslinking agent and initiator were added, and reacted at 75°C for 5 hours to obtain a PEG / PVA / PAA reaction solution. Put the chitosan granules with a particle size of 20 mesh into the coating machine, and spray the PEG / PVA / PAA reaction solution at 20 rpm, wherein the chitosan and the reaction solution are mixed uniformly in a mass ratio of 100:5; Heating and drying until the water content is no more than 5.0%; the bacteriostatic and antibacterial particles of PEG / PVA / PAA composite water-absorbing resin-coated chitosan can be obtained.
Embodiment 2
[0038]Firstly, acrylic acid with a neutralization degree of 75% is miscible with a certain amount of water and placed in a 500ml three-necked flask, and the same amount of initiator in the PEG solution is added to the acrylic acid at 50°C and stirred for 15 minutes. When the temperature is raised to 70°C, the PVA solution and a certain amount of mixed solution of cross-linking agent and initiator are added. React at 75°C for 10 h to obtain a PEG / PVA / PAA reaction solution. Put the chitosan particles with a particle size of 200 mesh into the coating machine, and spray the PEG / PVA / PAA reaction solution at 60 rpm, wherein the chitosan and the reaction solution are mixed uniformly in a mass ratio of 100:40; Heating and drying until the water content is no more than 5.0%; PEG / PVA / PAA composite water-absorbing resin-coated chitosan antibacterial and antibacterial particles can be obtained.
Embodiment 3
[0040] Firstly, acrylic acid with a neutralization degree of 75% is miscible with a certain amount of water and placed in a 500ml three-necked flask, and the same amount of initiator in the PEG solution is added to the acrylic acid at 50°C and stirred for 15 minutes. When the temperature was raised to 75°C, the PVA solution and a certain amount of cross-linking agent and initiator mixed solution were added, and reacted at 75°C for 5 hours to obtain a PEG / PVA / PAA reaction solution. Put the chitosan particles with a particle size of 50 mesh into the coating machine, spray the PEG / PVA / PAA reaction solution at 40 rpm, wherein the chitosan and the reaction solution are mixed evenly in a mass ratio of 100:10; Heating and drying until the water content is no more than 5.0%; the bacteriostatic and antibacterial particles of PEG / PVA / PAA composite water-absorbing resin-coated chitosan can be obtained.
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com