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A kind of viscoelastic additive and its composition, preparation method and application

A technology of bomb auxiliaries and compositions, applied in the field of pesticide auxiliaries, can solve the problems of complex preparation process of polyetheramine, air pollution, waste, etc., and achieve the effects of good dispersion in water, improved spreading, and reduced droplet rebound.

Active Publication Date: 2022-03-08
YANGZHOU SPED CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Multifunctional monomers can be polybasic acids, difunctional acid halides, acid anhydrides, poly(acid anhydrides) and mixtures thereof, and can be used in agricultural chemical compositions, but the preparation process of the raw material polyetheramine is complicated, and a special high-efficiency catalyst is especially required to Improve NH 3 The conversion rate, otherwise it is easy to cause NH 3 waste pollutes the air

Method used

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  • A kind of viscoelastic additive and its composition, preparation method and application
  • A kind of viscoelastic additive and its composition, preparation method and application
  • A kind of viscoelastic additive and its composition, preparation method and application

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Embodiment 1

[0057] The embodiment of the present invention discloses a droplet viscoelastic water-based polymer additive and its composition. The preparation method specifically includes the following steps: (1) Add 2.75g methanesulfonic acid, 561g dimer acid (HONGTAI), and replace it with nitrogen for 3 times, raise the temperature to 140-160°C, add 156g of diethylenetriamine dropwise, and dehydrate with nitrogen, while controlling the dropping temperature to 140-160°C, and the dropping time 2.5-3h, after the dropwise addition is completed, control the temperature at 160-165°C for aging reaction, the aging time is 4-6h, when the water is collected about 36g and the acid value is less than 2.5mgKOH / g, add 280g of oleic acid and control the temperature at 180- 185°C, dehydrated with nitrogen gas, the aging time is 5-7h, when the collected water is about 18g, and the acid value is less than 1.8mgKOH / g, finally vacuumize at 80-85°C to remove the volatile components. get A1.

[0058] (2) Add...

Embodiment 2

[0063] The embodiment of the present invention discloses a droplet viscoelastic water-based polymer additive and its composition. The preparation method specifically includes the following steps:

[0064] (1) Add 3.1g p-toluenesulfonic acid, 561g dimer acid (UNIDYME TM14), and replace it with nitrogen for 3 times, increase the temperature to 140-160°C, add 347g of pentaethylenehexamine dropwise, and dehydrate with nitrogen, while controlling the dropping temperature to 180-190°C, and the dropping time is 2.5- 3h, the dropwise addition is completed, and the temperature is controlled at 180-190°C for aging reaction. The aging time is 4-6h. When about 36g of water is collected, the acid value is less than 1.8mgKOH / g, and 216g of oleic acid is added, and the temperature is controlled at 180-195°C. It is dehydrated with nitrogen gas, and the aging time is 5-7 hours. When about 18g of water is collected and the acid value is less than 1.2mgKOH / g, it is finally vacuumed at 80-85°C to...

Embodiment 3

[0070] The embodiment of the present invention discloses a droplet viscoelastic water-based polymer additive and its composition. The preparation method specifically includes the following steps:

[0071] (1) Add 7.5g p-toluenesulfonic acid, 561g dimer acid (UNIDYME TM 18), and replaced with nitrogen for 3 times, raised the temperature to 140-160°C, added 138g of diethylenetriamine dropwise, and dehydrated with nitrogen, while controlling the dropping temperature to 180-190°C, and the dropping time was 2.5- After 3 hours, the dropwise addition is completed, and the temperature is controlled at 180-190°C to carry out the aging reaction. The aging time is 4-6h. When about 35g of water is collected and the acid value is less than 4mgKOH / g, add 228g of coconut oleic acid and control the temperature at 180-195°C. It is dehydrated with nitrogen gas, and the aging time is 5-7h. When about 11g of water is collected and the acid value is less than 0.8mgKOH / g, it is finally vacuumed at ...

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Abstract

The invention provides a viscoelastic additive and its composition, preparation method and application. The preparation method comprises the following steps: (1) under the action of an acidic catalyst, polyethylene polyamine is added dropwise to dimer acid, and after aging reaction Finally, it is blocked with a fatty acid or a fatty acid ester to obtain A; (2) adding a basic catalyst to A, then adding an epoxy compound for aging reaction, adding a neutralizing agent to adjust the pH, adding an acidic catalyst, Fatty acid or fatty acid ester, carry out esterification modification, can prepare and obtain modified polyethylene polyamine alkoxy ester compound B; (3) carry out cationization reaction under the action of aqueous solution of cationization reagent on B, obtain described Viscoelastic additives. The viscoelastic adjuvant composition provided by the invention can significantly reduce the bouncing and rolling of pesticide formulation mist droplets on the target, and improve the retention, spreading and utilization of the pesticide.

Description

technical field [0001] The invention relates to the technical field of pesticide adjuvants, and more specifically relates to a viscoelastic adjuvant and its composition, preparation method and application. Background technique [0002] As an important means of agricultural production in my country, pesticides are widely used in the prevention and control of diseases, insects, weeds, and pests that seriously endanger production activities such as agriculture, forestry, animal husbandry, and fishery, and have made indelible contributions to national strategic issues such as increasing food production. contribute. However, the amount of pesticide liquid usage has also hit new highs. Studies have shown that the utilization rate of pesticides after spraying in my country is only 30%, and about 70% of the liquid medicine bounces, rolls, aggregates and loses into the ecological environment due to the ineffective dripping and adhesion of the droplets on the target surface, resulting...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/26C08G65/337C08G65/324A01N25/24A01N47/40A01N43/90A01N43/76A01N51/00A01P7/04A01P7/02
CPCC08G65/2633C08G65/337C08G65/324A01N25/24A01N47/40A01N43/90A01N43/76A01N51/00
Inventor 王磊曹雄飞宋文勇沈姣姣秦敦忠
Owner YANGZHOU SPED CHEM
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