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Fatty alcohol block polyether, dispersant for aqueous pesticide suspension, preparation method of dispersant, and aqueous pesticide suspension

A technology of block polyether and aliphatic alcohol, applied in the field of polymers, can solve the problems that pesticide water suspension agent cannot meet the production, storage and use, and achieve the effect of improving low temperature antifreeze ability, excellent fluidity and wide application fields.

Active Publication Date: 2019-11-05
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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  • Fatty alcohol block polyether, dispersant for aqueous pesticide suspension, preparation method of dispersant, and aqueous pesticide suspension
  • Fatty alcohol block polyether, dispersant for aqueous pesticide suspension, preparation method of dispersant, and aqueous pesticide suspension
  • Fatty alcohol block polyether, dispersant for aqueous pesticide suspension, preparation method of dispersant, and aqueous pesticide suspension

Examples

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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 the 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...

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 an aqueous pesticide suspension, a preparation method of the dispersant, and the aqueous pesticide suspension. The polyether chain segment of the fatty alcohol block polyether comprises a polypropylene oxide block, a polybutylene oxide block, an ethylene oxide-propylene oxide copolymer block and a polyethylene oxide block which are sequentially connected. The fatty alcohol block polyether adopts the polypropylene oxide block as a starting block, and the polybutylene oxide block is located in the middle of the polyether chain segment, so the fatty alcohol block polyether has a good low temperature antifreeze property; ethylene oxide and propylene oxide form the block in the manner of the copolymer, so a molar ratio ofthe ethylene oxide to propylene oxide in order to adjust the HLB value of the fatty alcohol block polyether, thereby the fatty alcohol block polyether is suitable for different systems with hydrophilic and lipophilic properties; and the fatty alcohol block polyether is terminated with the polyethylene oxide block to improve the integral hydrophilicity of the fatty alcohol block polyether, so the fatty alcohol block polyether is convenient for being used in an aqueous phase system.

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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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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