Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Polycarboxylate dispersing agent and preparation method thereof

A polycarboxylate and dispersant technology, applied in the field of pesticides, can solve the problems of poor environmental compatibility, low molecular weight, unreasonable distribution of functional groups, etc., and achieve the effects of high dispersion performance and stability performance, and uniform structure distribution.

Pending Publication Date: 2019-07-26
SHANGHAI SHIDA POLYMER MATERIAL
View PDF5 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional pesticide dispersants are generally polycyclic anionic surfactants, such as alkyl naphthalene sulfonate, sodium salt of naphthalene sulfonate formaldehyde condensate, lignin sulfonate, etc., have a certain dispersion and stabilization effect, but due to Low molecular weight, unreasonable distribution of functional groups, poor environmental compatibility and other reasons make the dispersion stability of the obtained pesticide aqueous suspension system poor

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

[0024] Step 1: Take the following quality materials: 30 parts of itaconic acid, 200 parts of deionized water and 1 part of mercaptoacetic acid are added to a four-neck flask with a stirrer, constant pressure dropping funnel, thermometer, and condenser, and the temperature is raised with stirring Keep warm at about 80°C for 2 hours;

[0025] Step 2: Add 30 parts of monomer allyl polyoxyethylene ether and 5 parts of initiator ammonium persulfate dropwise to the above solution within 2.5 hours, and keep warm for 4 hours;

[0026] Step 3: Finally, 6 parts of pH regulator NaOH were added to the above solution, stirred for neutralization, cooled and discharged to obtain a polycarboxylate dispersant.

Embodiment 2

[0028] Step 1: Take the following quality materials: 30 parts of acrylic acid, 200 parts of deionized water and 1 part of mercaptoacetic acid are added to a four-necked flask with a stirrer, a constant pressure dropping funnel, a thermometer and a condenser, and the temperature is raised to 80 Keep warm at about ℃ for 2 hours;

[0029] Step 2: Add 30 parts of monomer methallyl polyoxyethylene ether and 5 parts of initiator ammonium persulfate to the above solution dropwise within 2.5 hours, and keep warm for 4 hours;

[0030] Step 3: Finally, 6 parts of pH regulator NaOH were added to the above solution, stirred for neutralization, cooled and discharged to obtain a polycarboxylate dispersant.

Embodiment 3

[0032] Step 1: Take the following quality materials: 30 parts of methacrylic acid, 200 parts of deionized water and 1 part of mercaptoacetic acid are added to a four-necked flask with a stirrer, a constant pressure dropping funnel, a thermometer and a condenser tube, and the temperature is raised with stirring Keep warm at about 80°C for 2 hours;

[0033] Step 2: Add 30 parts of monomer nonylphenol polyoxyethylene ether acrylate and 5 parts of initiator ammonium persulfate to the above solution dropwise within 2.5 hours, and keep warm for 4 hours;

[0034] Step 3: Finally, 6 parts of pH regulator NaOH were added to the above solution, stirred for neutralization, cooled and discharged to obtain a polycarboxylate dispersant.

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 polycarboxylate dispersing agent. The polycarboxylate dispersing agent comprises, by mass, 30-100 parts of monomers A, 30-100 parts of monomers B, 5-20 parts of initiators, 1-15 parts of chain transfer agents, 200 parts of deionized water and 6-15 parts of pH regulators. Linear polycarboxylate of the polycarboxylate dispersing agent is poisonless, and harmless to the human body. No waste water or waste residue is discharged during production of the polycarboxylate, discharged gases do not contain toxic components, and a green chemical production principle is followed.

Description

technical field [0001] The invention relates to the field of pesticides, in particular to a pesticide dispersant, more specifically to a polycarboxylate pesticide dispersant and a preparation method thereof. Background technique [0002] Pesticide dispersant is one of the key components in pesticide formulations. It adsorbs on the oil-ice interface or the surface of solid particles, hinders and prevents the aggregation of solid or liquid particles in the dispersion system, and keeps the pesticide particles uniformly dispersed for a long time. [0003] Traditional pesticide dispersants are generally anionic surfactants with polycyclic rings, such as alkyl naphthalene sulfonate, sodium salt of naphthalene sulfonate formaldehyde condensate, lignosulfonate, etc., have a certain dispersion and stabilization effect, but due to Low molecular weight, unreasonable distribution of functional groups, poor environmental compatibility and other reasons make the dispersion stability of th...

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): C08F283/06C08F222/02C08F2/38C08F228/02C08F220/06C08F220/14C08F220/20C08F220/18C08F222/06C08F212/14C08F220/58A01N25/30
CPCC08F283/065C08F2/38C08F222/02C08F212/14C08F220/58C08F228/02C08F220/14C08F220/18A01N25/30C08F220/1808C08F220/585C08F220/1804C08F220/06C08F222/06C08F220/20
Inventor 任天瑞杨小东张雷张博
Owner SHANGHAI SHIDA POLYMER MATERIAL
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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