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A kind of fatty alcohol block polyether, dispersant for pesticide aqueous suspension, preparation method thereof, pesticide aqueous suspension

A block polyether and fatty alcohol technology, applied in the field of polymers, can solve the problems that the pesticide water suspension cannot meet the production, storage and use, etc., and achieve the goal of improving low temperature antifreeze ability, improving hydrophilicity and excellent fluidity Effect

Active Publication Date: 2022-03-22
JIAHUA CHEM TECH DEV SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved in the present invention is to overcome the defects that the pesticide aqueous suspension in the prior art cannot meet the production, storage and use in a lower temperature environment, thereby providing a kind of fatty alcohol block polyether, which is used for pesticide Dispersant for aqueous suspension and preparation method thereof, pesticide aqueous suspension

Method used

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  • A kind of fatty alcohol block polyether, dispersant for pesticide aqueous suspension, preparation method thereof, pesticide aqueous suspension
  • A kind of fatty alcohol block polyether, dispersant for pesticide aqueous suspension, preparation method thereof, pesticide aqueous suspension
  • A kind of fatty alcohol block polyether, dispersant for pesticide aqueous suspension, preparation method thereof, pesticide aqueous suspension

Examples

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Comparison scheme
Effect test

Embodiment 1

[0036] A kind of preparation method for the dispersant of agricultural chemicals water suspension concentrate, operation steps are as follows:

[0037] (1) Get initiator isomerization undecyl alcohol (1mol), propylene oxide (15mol), basic catalyst KOH (0.001mol), the starter butanol is at 120 ℃, 0.50MPa, basic catalyst KOH Ring-opening polymerization reaction occurs with propylene oxide under the action to obtain intermediate product 1;

[0038] (2) The intermediate product 1 obtained in step (1) is neutralized with phosphoric acid to pH = 7, and is decomposed with butylene oxide (40 mol) at 170 ° C, 0.50 MPa, and under the action of a bimetallic catalyst DMC (0.015 mol). Ring polymerization reaction to obtain intermediate product 2;

[0039] (3) Continue to add the basic catalyst KOH (0.001mol) in the intermediate product 2, and first react with propylene oxide (6mol) under the conditions of 120°C and 0.50MPa for ring-opening polymerization, and then react with ethylene oxid...

Embodiment 2

[0044] A kind of preparation method for the dispersant of agricultural chemicals water suspension concentrate, operation steps are as follows:

[0045] (1) Get initiator isomeric tridecanol (1mol), propylene oxide (25mol), basic catalyst KOH (0.005mol), the initiator butanol is at 120 ℃, 0.5MPa, basic catalyst KOH Ring-opening polymerization reaction occurs with propylene oxide under the action to obtain intermediate product 1;

[0046] (2) The intermediate product 1 obtained in step (1) is neutralized with phosphoric acid to pH = 6, and is developed with butylene oxide (60 mol) under the action of a bimetallic catalyst DMC (0.015 mol) at 170 ° C and 0.5 MPa. Ring polymerization reaction to obtain intermediate product 2;

[0047] (3) Continue to add the basic catalyst KOH (0.005mol) to the intermediate product 2, and undergo ring-opening polymerization (random polymerization) with ethylene oxide (5mol) and propylene oxide (15mol) at 160°C and 0.5MPa. ) reaction to obtain int...

Embodiment 3

[0052] A kind of preparation method for the dispersant of agricultural chemicals water suspension concentrate, operation steps are as follows:

[0053] (1) Get initiator butanol (5mol), propylene oxide (25mol), basic catalyst KOH (0.025mol), the initiator butanol is mixed under the effect of 110 ℃, 0.30MPa, basic catalyst KOH Propylene oxide undergoes ring-opening polymerization to obtain intermediate product 1;

[0054] (2) Neutralize the intermediate product 1 obtained in step 1 to pH = 6, and undergo ring-opening polymerization with butylene oxide (55 mol) at 150° C., 0.40 MPa, and under the action of a bimetallic catalyst DMC (0.065 mol). Reaction, obtain intermediate product 2;

[0055] (3) Continue to add the basic catalyst KOH (0.025mol) in the intermediate product 2, and first react with propylene oxide (15mol) under the conditions of 150°C and 0.5MPa for ring-opening polymerization, and then react with ethylene oxide (15mol) ) ring-opening polymerization reaction oc...

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Abstract

The invention provides a fatty alcohol block polyether, a dispersant for pesticide water suspensions, a preparation method thereof, and pesticide water suspensions. The polyether chain segment of the fatty alcohol block polyether includes successively connected polypropylene oxide blocks, polybutylene oxide blocks, ethylene oxide propylene oxide copolymer blocks and polyethylene oxide blocks. The fatty alcohol block polyether starts with a polypropylene oxide block, and the polybutylene oxide block is located in the middle of the polyether chain segment, so that it has low-temperature antifreeze performance; The block is formed in the form of a copolymer, and the HLB value of the fatty alcohol block polyether can be adjusted by adjusting the molar ratio of the two, making it suitable for systems with different hydrophilic and lipophilic properties; finally, the polyethylene oxide block Capping can improve the overall hydrophilicity of the fatty alcohol block polyether, making it easy to use in aqueous phase systems.

Description

technical field [0001] The invention relates to the field of polymers, in particular to a fatty alcohol block polyether, a dispersant for a pesticide water suspension, a preparation method thereof, and a pesticide water suspension. Background technique [0002] Agriculture is the economic foundation of the nation, and pesticides play an extremely important role in agricultural development. However, general pesticide raw materials cannot be used directly, and must be processed into pesticide formulations that are convenient for subsequent application, including wettable powder, emulsifiable concentrate, water emulsion, water Suspending agent, granules, etc. In recent years, with the improvement of pesticide pollution problems and people's awareness of environmental protection, traditional pesticide preparations such as emulsifiable concentrates and wettable powders with low efficacy and high environmental hazards have been gradually restricted by the state. They are safe, eff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/28A01N25/04A01N37/26A01N43/54A01N43/653A01N33/18A01P13/00A01P3/00A01P1/00
CPCC08G65/2609C08G65/2663A01N25/04A01N37/26A01N43/54A01N43/653A01N33/18
Inventor 周苗苗何新耀李玉博
Owner JIAHUA CHEM TECH DEV SHANGHAI CO LTD
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