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Wetting and dispersing agent and pendimethalin suspending agent using the auxiliary agent

A wetting and dispersing agent, pendimethalin technology, applied in herbicides and algicides, chemicals for biological control, applications, etc., can solve problems such as creaming, sanding difficulties, and material thickening. Achieve the effect of improving stability, good contact and good surface activity

Active Publication Date: 2021-09-17
中化化工科学技术研究总院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The more difficult problems in the processing of water suspensions are mainly the preparation methods and processes of low melting point technical materials. Technical materials with a melting point lower than 70°C are easy to soften and dissolve during the preparation of water suspensions, making the materials thicker, and finally lead to Sanding is more difficult, and creaming, crystallization, and agglomeration are also prone to occur during heat storage or long-term storage

Method used

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  • Wetting and dispersing agent and pendimethalin suspending agent using the auxiliary agent
  • Wetting and dispersing agent and pendimethalin suspending agent using the auxiliary agent
  • Wetting and dispersing agent and pendimethalin suspending agent using the auxiliary agent

Examples

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Comparison scheme
Effect test

Embodiment 1

[0031] A wetting and dispersing agent, composed of the following components in mass percentage: 35% of hydroxyl polyethylene oxide block copolymer, 30% of polyacrylic acid sodium salt, 15% of tristyrylphenol sulfonate, alkylphenol modified 20% polyoxyethylene ether mixed evenly.

[0032] Adopt this mixed auxiliary agent to process 20% pendimethalin suspending agent, concrete method is: take by weighing 10g mixed wetting and dispersing agent and place in the sample cup of sand mill, add 62.8g tap water, 5g ethylene glycol, 0.2g of defoamer and 2g of xanthan gum were mixed uniformly to form an aqueous solution, and then 2g of white carbon black and 20g of pendimethalin were added and mixed uniformly to form a slurry to be ground. 120 g of zirconia beads were added to the slurry to be ground, and placed on a sand mill for grinding at a speed of 1600 rpm for 1 hour. After 1 hour, the ground slurry was collected to be a 20% pendimethalin suspension concentrate sample.

Embodiment 2

[0034] A wetting and dispersing agent, consisting of the following mass percentage components: 25% fatty alcohol ethylene oxide propylene oxide block copolymer, 40% polyacrylic acid ammonium salt, 10% dodecylbenzenesulfonate, fatty acid Modified polyoxyethylene ether 25% mixed uniformly.

[0035] Adopt this mixed auxiliary agent to process 10% pendimethalin suspending agent, concrete method is: take by weighing 10g mixed wetting and dispersing agent and place in the sample cup of sand mill, add 72.9g tap water, 2g ethylene glycol, 0.1 g of defoaming agent and 2 g of xanthan gum were mixed uniformly to form an aqueous solution, and then 5 g of white carbon black and 10 g of pendimethalin original drug were added and mixed uniformly to form a slurry to be ground. 120 g of zirconia beads were added to the slurry to be ground, and placed on a sand mill for grinding at a speed of 1600 rpm for 1 hour. After 1 hour, the ground slurry was collected to be a 10% pendimethalin suspensio...

Embodiment 3

[0037] A wetting and dispersing agent, consisting of the following components in mass percentage: 30% propylene glycol block polyether, 35% polyacrylic acid sodium salt, 12% alkenyl sulfonate, 23% castor oil modified polyoxyethylene ether and mix well made.

[0038] Adopt this mixed auxiliary agent to process 15% pendimethalin suspending agent, concrete method is: take by weighing 15g mixed wetting and dispersing agent and place in the sample cup of sand mill, add 67.8g tap water, 5g ethylene glycol, Mix 0.2g of defoamer and 2g of xanthan gum to form an aqueous solution, then add 2g of white carbon black and 10g of pendimethalin and mix evenly to form a slurry to be ground. 120 g of zirconia beads were added to the slurry to be ground, and placed on a sand mill for grinding at a speed of 1600 rpm for 1 hour. After 1 hour, the ground slurry was collected to be a 15% pendimethalin suspension concentrate sample.

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Abstract

The invention relates to a wetting and dispersing agent and a pendimethalin suspension using the auxiliary agent, belonging to the technical field of pesticide preparation processing. The above wetting and dispersing agent is composed of the following mass percentage components: block polyether dispersant 20%-40%; polycarboxylate dispersant 30%-50%; alkylsulfonate dispersant 10%-20%; Modified polyether dispersant 20%‑40%. The pendimethalin suspension processed by the wetting and dispersing agent of the invention has the advantages of good storage stability, no crystallization, no creaming, and the like.

Description

technical field [0001] The invention relates to the technical field of pesticide preparation processing, and specifically provides a wetting and dispersing agent and a pendimethalin suspension using the auxiliary agent. Background technique [0002] As people's awareness of environmental protection and safety knowledge continue to increase, the research and development of "water-based, environmentally friendly, slow-release, multi-functional, labor-saving and refined" pesticide formulations has become a hot topic at home and abroad. Due to its good environmental compatibility, drug efficacy, low cost and safe processing and use, the pesticide aqueous suspension concentrate stands out from the water-based preparations and has great development potential. [0003] The more difficult problems in the processing of water suspensions are mainly the preparation methods and processes of low melting point technical materials. Technical materials with a melting point lower than 70°C a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N25/04A01N25/30A01N33/18A01P13/00
CPCA01N25/04A01N25/30A01N33/18
Inventor 李晶张宗俭姚登峰卢忠利张鹏张春华魏光耿学军
Owner 中化化工科学技术研究总院有限公司
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