Pesticide suspension concentrate dispersing agent and novel preparation method thereof
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of dispersant and suspending agent, applied in the field of high-efficiency pesticide suspending agent and dispersing agent and its preparation method, which can solve the problems of high cost and dependence on imports
Inactive Publication Date: 2013-02-06
JIANGSU ZHONGSHAN CHEM
View PDF2 Cites 15 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
Foreign countries have made a lot of achievements in the development of suspending agent and dispersant, and many products have come out one after another. However, domestic countries are far behind foreign countries in this regard, almost relying on imports, and the cost is relatively high.
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
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0036] Add 50.8g MA-1, 25.5g MB-1, 23.7g MC-1, 16.8g NaOH, 0.1g acrylamide, 20g SF-1 to a four-necked flask equipped with a stirrer, dropping funnel, thermometer and condenser and 244g of water, stir and heat up to 60°C, turn on the N 2 protection, and then began to slowly drop 25ml of potassium persulfate aqueous solution with a concentration of 1.5wt%, controlling the dropping time within 4h, and the reaction temperature at 58-62°C. After the initiator was added dropwise, the temperature was raised to 90°C to continue the reaction for 2 hours. 2 After cooling down to room temperature, evacuate to 480mmHg to remove unreacted monomers and small molecule polymers to obtain the pesticide suspension and dispersant of the present invention.
[0037]
Embodiment 2
[0039] Add 50.8g MA-1, 33.5g MB-2, 15.7g MC-2, 22.1g NaOH, 0.1g acrylamide, 20g SF-2 to a four-necked flask equipped with a stirrer, dropping funnel, thermometer and condenser and 244g of water, stir and heat up to 60°C, turn on the N 2protection, and then began to slowly drop 25ml of azoamidine aqueous solution with a concentration of 1.5wt%, controlling the dropping time within 4h, and the reaction temperature at 58-62°C. After the initiator was added dropwise, the temperature was raised to 80°C to continue the reaction for 2.5 hours. 2 After cooling down to room temperature, evacuate to 480mmHg to remove unreacted monomers and small molecule polymers to obtain the pesticide suspension and dispersant of the present invention.
[0040]
Embodiment 3
[0042] Add 50.8g of MA-1, 33.5g of MB-2, 20g of SF-2, 22.1g of NaOH and 244g of water into a four-neck flask equipped with a stirrer, dropping funnel, thermometer and condenser tube, stir to raise the temperature to 60°C, and open N 2 protection, then start to slowly add 8ml of azoamidine aqueous solution with a concentration of 1.5wt%, then add 15.7g MC-2 and 0.1g acrylamide, continue to dropwise add 17ml of initiator, control the dropping time within 4h, and the reaction temperature is at 58~62℃. After the initiator was added dropwise, the temperature was raised to 90°C to continue the reaction for 2 hours. 2 After cooling down to room temperature, evacuate to 480mmHg to remove unreacted monomers and small molecule polymers to obtain the pesticide suspension and dispersant of the present invention.
[0043]
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
Login to view more
Abstract
The invention discloses a pesticide suspension concentrate dispersing agent which is a polymer with a comb-shaped structure, wherein a main chain of the polymer is connected by C-C bonds; and a side chain containing polyethylene oxide or polypropylene oxide and a carboxyl strong polar group capable of being ionized are connected to a side chain of the polymer. The pesticide suspension concentrate dispersing agent is prepared according to the method that unsaturated macromonomers A of the long chain containing the polyethylene oxide or the polypropylene oxide, unsaturated carboxylic acid or derivative monomers B thereof and other copolymer monomers C containing ethylenic bonds are mixed and dissolved in water, wherein the total amount of the A, the B and the C is 100 percent by mass; then a pH (potential of hydrogen) regulator is added to a reaction system so as to enable a solution to be electrically neutral; a cross-linking agent for controlling the molecular weight of a product and a surfactant are added to the solution, and the solution is stirred and heated to a reaction temperature under the protection of N2; a free radical initiator is dripped to the solution to initiate an emulsion polymerization reaction; after the reaction is finished, the solution is vacuumized to remove unreacted monomers and small molecular polymers, and then the dispersing agent of the pesticide suspension concentrate is obtained. The molecular weight of the pesticide suspension concentrate dispersing agent is 5000 to 500000.
Description
technical field [0001] The invention relates to a dispersant and a preparation method thereof, in particular to a high-efficiency pesticide suspension dispersant and a preparation method thereof. Background technique [0002] Pesticides are important means of production for human beings and play a pivotal role in the development of world agriculture. Except for a few pesticides with high volatility and high solubility in water, which can be used directly, most of them must be processed into certain dosage forms before they can be used. In addition to the active ingredients of pesticides, other auxiliaries in pesticide formulations are collectively referred to as adjuvants. Wettable powders, powders, emulsifiable concentrates and granules used to be called the four major pesticide formulations. Suspension concentrate is one of the new dosage forms that have been booming in recent years. It has developed rapidly at home and abroad, and is recognized as an "epoch-making" new ...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more