Hydrophobic pesticide preparation containing microcapsules and preparation method of hydrophobic pesticide preparation containing microcapsules

A pesticide preparation and microcapsule technology, which is applied in the field of hydrophobic pesticide preparations containing microcapsules and its preparation, can solve the problems of low utilization rate of emulsifiable concentrate formulations and serious environmental pollution, and achieve reduced spraying times, less investment in equipment, and easy operation. simple effect

Inactive Publication Date: 2017-01-04
ANHUI COSTAR BIOCHEM CO LTD
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to overcome the problems of low utilization rate of existing hydrophobic pesticide emulsifiable concentrate formulations and serious environmental pollution, and provide a hydrophobic pesticide preparation containing microcapsules with good stability and long-lasting effect and its preparation method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Accurately weigh 0.5g of polylactic acid-glycolic acid copolymer and 0.5g of acetochlor technical solution in 9g of acetone, that is, organic phase A; prepare 50mL, 1wt% sodium dodecylbenzenesulfonate solution as aqueous phase B ; Use a syringe to slowly drop into the water phase B at a rate of 5 drops per second. During the dropping process, keep the temperature at 25°C and stir at a rate of 700rpm; A mixed preparation of microcapsule suspension and acetochlor aqueous emulsion. The drug encapsulation rate of the mixed preparation was 19.2%, and the drug loading was 12.3% by mass.

Embodiment 2

[0023] Accurately weigh 0.4g of polylactic acid-glycolic acid copolymer and 0.6g of acetochlor technical solution in 9g of acetone, that is, organic phase A; prepare 50mL, 1wt% sodium dodecylbenzenesulfonate solution as aqueous phase B ; Use a syringe to slowly drop into the water phase B at a rate of 5 drops per second. During the dropping process, keep the temperature at 25°C and stir at a rate of 700rpm; A mixed preparation of microcapsule suspension and acetochlor aqueous emulsion. The drug encapsulation rate of the mixed preparation was 27.3%, and the drug loading was 16.8% by mass.

Embodiment 3

[0025] Accurately weigh 0.5g of polycaprolactone and 0.5g of chlorpyrifos technical substance and dissolve in 9g of acetone, that is, organic phase A; prepare 50mL, 1wt% sodium dodecylbenzenesulfonate solution as aqueous phase B; Add slowly at a rate of 5 drops per second to the aqueous phase B. During the dropping process, keep the temperature at 25°C and stir at a rate of 700rpm; Mixed formulation of chlorpyrifos emulsion in water. The drug encapsulation rate of the mixed preparation is 22.4%, and the drug loading is 13.5% by mass.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a hydrophobic pesticide preparation containing microcapsules and a preparation method of the hydrophobic pesticide preparation containing the microcapsules. The type of the preparation is water emulsion and microcapsule suspending agent; the microcapsules contain core materials and wall materials; the core materials are active ingredients encapsulated in the microcapsules and are alternatively selected from the following substances: chlorpyrifos, malathion, pyraclostrobin and acetochlor, wherein the drug loading capacity is 10 to 30 percent counted by mass; the wall materials are biodegradable polymer materials and are alternatively selected from the following substances: polycaprolactone (PCL), poly lactide-glycolic acid (PLGA) copolymer and polylactic acid (PVA); active ingredients of the water emulsion are core materials which are not encapsulated in the microcapsules. According to the hydrophobic pesticide preparation disclosed by the invention, by adopting biodegradable environment-friendly polymer as the wall materials, hydrophobic pesticide is effectively coated, a significant sustained-release effect is realized, the utilization rate of pesticide is improved, the acting time of the pesticide is prolonged, the production cost is reduced, and the aims of reducing pesticide applying times and the pressure of a biological environment are achieved.

Description

technical field [0001] The invention belongs to the technical field of hydrophobic pesticide microcapsule embedding, and in particular relates to a hydrophobic pesticide preparation containing microcapsules and a preparation method thereof. Background technique [0002] In the process of agricultural production, it is necessary to prevent and control the pests and diseases of crops, and the application of chemical pesticides is still the main means of controlling pests and diseases of crops in the current agricultural production process. However, it is worth noting that there are two serious shortcomings in the current traditional pesticide formulations: ( 1) Due to the low effective utilization rate and low persistence of pesticides, repeated large-scale use will cause pesticide abuse and pose a serious threat to the ecological environment; (2) In the production process of commonly used dosage forms, organic excipients cause serious pollution to the environment. [0003] In...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/04A01N25/28A01N37/26A01N57/16A01N47/24
CPCA01N25/04A01N25/28A01N37/26A01N47/24A01N57/16A01N2300/00
Inventor 谷顺明王乐强韦琛鸿居虎军徐荣莽秦锦云
Owner ANHUI COSTAR BIOCHEM CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products