Application and preparation method for polyhydroxyalkanoate grafted organic polyamine dispersant

A technology of polyhydroxy fatty acid ester and hydroxy fatty acid is applied in the application and preparation field of polyhydroxy fatty acid ester grafted organic polyamine dispersant, which can solve the problem of no specific application and achieve the effect of unique dispersing effect.

Inactive Publication Date: 2015-11-11
YANGZHOU SPED CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

People such as Wang Yonglei prepared polyester polyamine hyperdispersant with 12-hydroxystearic acid and polyethylene pol

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 12-hydroxystearic acid, xylene, catalyst tetrabutyl titanate, polyethyleneimine, the steps are as follows:

[0032] (1) Add 210g of 12-hydroxystearic acid into a 250ml three-necked flask, heat at 100°C to melt the material, blow in nitrogen, add 21g of xylene and 0.3g of catalyst tetrabutyl titanate, heat to 160-180°C for 16 hours, and use The water separator removes the water generated by the reaction. The xylene was removed under nitrogen pressure, cooled, and the acid value was determined to be about 35 mgKOH / g. The molecular weight is about 1600-1800.

[0033] (2) 50g polyethyleneimine (EPOMINSP-012, molecular weight 1200), 20g xylene, under the protection of nitrogen, heat to boiling, and remove water with a water separator. Add 66.6g of polyhydroxystearate synthesized in step 1, react at 150°C for 3 hours, remove the water generated by the reaction with a water separator, and obtain a brown viscous substance, which is soluble in hydrocarbon organic solvents, and...

Embodiment 2

[0035] 12-hydroxystearic acid, xylene, catalyst stannous chloride, polyethyleneimine, the steps are as follows:

[0036] (1) Add 100g of 12-hydroxystearic acid to a 100ml three-necked flask, heat at 100°C to melt the material, blow in nitrogen, add 30g of xylene and 3.5g of catalyst stannous chloride, and heat to 180°C to react until the acid value is about 35mgKOH / g, stop the reaction. The xylenes were removed by nitrogen purge.

[0037] (2) Add 11g of polyethyleneimine (Nippon SP200, molecular weight 10000) and the above 55g of polyester into the reactor, add 10g of xylene, blow in nitrogen, and react at 130°C-160°C for 3-6 hours to obtain brown viscous Liquid, the acid value is about 10-15mgKOH / g. The product is labeled B.

Embodiment 3

[0039] 12-hydroxystearic acid, toluene, catalyst methanesulfonic acid, dimethylpropylamine, the steps are as follows:

[0040] (1) Add 958.3g of 12-hydroxystearic acid (containing 15wt% stearic acid), 170.4g of toluene and 1.9g of methanesulfonic acid into a 1L reactor, pass through nitrogen protection, react at 160-180°C, and wait for the acid value to decrease When it reached 35 mgKOH / g, the reaction was stopped, and the toluene was purged with nitrogen to obtain a yellow viscous liquid.

[0041] (2) Add 160g of the above-mentioned polyester, 20.4g of 3-dimethylaminopropylamine into the reactor, add 30ml of toluene, pass through nitrogen protection, react at 130-160°C, wait until the acid value is reduced to 5mgKOH / g, stop the reaction, and depressurize Toluene was removed by nitrogen purge. The product is marked C.

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PUM

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Abstract

The invention relates to a preparation method for a polyhydroxyalkanoate grafted organic polyamine dispersant and application thereof. The dispersant is applied in a pesticide oil suspension. The dispersant has a chemical formula as described in the specification. In the chemical formula, P is an organic polyamine main chain; T is a residue O-R-CO or lactone of hydroxyl fatty acid; X is a modifier or an end capping agent which is a straight-chain or branched-chain and saturated or unsaturated residue with a fatty acid of C1 to C22; T and P are connected by an amido bond; X and T are connected by an ester group; m is an integer of 1 to 100; and n may be 0 or an integer of 1 to 100. The objective of the invention is to provide the preparation method for agricultural polyhydroxyalkanoate grafted organic amine dispersants; the dispersants have amino anchoring groups and solvated polyester chains; and with a special chemical structure, the dispersants have good dispersing and stabilizing effects in an environment-friendly oil suspension.

Description

technical field [0001] The invention discloses a preparation and application of a polyhydroxyalkanoate grafted organic polyamine agricultural dispersant, which is applied to an environment-friendly pesticide suspension with vegetable oil, vegetable oil methyl ester or mineral oil as the continuous phase, and can improve the Grinding efficiency, reducing the particle size of the preparation, improving the stability of the preparation, especially in the preparation of high-concentration oil suspensions, has a good dispersion and viscosity-reducing effect. Background technique [0002] Environmentally friendly pesticide formulations such as suspension concentrates, emulsions in water, and microemulsions have received more and more attention. For some pesticides that are easily hydrolyzed in water, it can be made into an oil suspension to improve its formulation stabilizer. For some herbicides with strong lipophilicity but insoluble in oil phase, making them into oil suspension...

Claims

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Application Information

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IPC IPC(8): A01N25/04A01N25/30C08G81/00C08G63/91C08G63/06
Inventor 茅丹秦敦忠
Owner YANGZHOU SPED CHEM
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