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Stable aqueous suspension concentrate

A technology of concentrate and water suspension, used in biocides, animal repellents, plant growth regulators, etc., can solve problems such as inability to solve the problem of creaming

Pending Publication Date: 2022-07-26
JIANGSU ROTAM CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] (3) Layering and particle deposition caused by gravity
Obviously the conventional dispersant system cannot solve the creaming problem
This makes the development of stable aqueous suspension concentrates containing calcium copper sulfate more challenging

Method used

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  • Stable aqueous suspension concentrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] 1. Dispersion of calcium copper sulfate

[0067] In 491.5 g of water were dispersed magnesium aluminum silicate [trade name: VEEGUM R, from R.T. VANDERBILT] 7.5 g, alkylnaphthalene sulfonate [trade name: Dispersol BB4, from Croda] 45 g, propylene glycol 50 g, silicone defoamer [ Trade name: SAG 1572, Momentive] 2g, in which 660g of copper calcium sulfate technical drug (active ingredient concentration 98%) was dispersed, and 0.8-1.2mmφ glass beads were used for wet grinding operation with a sand mill [Dynomill®] to obtain 1256g of dispersion liquid containing copper calcium sulfate.

[0068] 2. Dispersion medium

[0069] In 175.3 g of water were dispersed xanthan gum [trade name: AG-RHO POL 23 / W (CN source, from Solvay] 1.4 g, 1,2-benzisothiazolin-3-one [trade name: CANGUARD ULTRA BIT20, from DOW] 2.5 g, chloromethyl and methylisothiazolinone [trade name: NIPACIDE CI 15 MV, from Clariant] 0.8 g to obtain 180 g of a dispersion medium.

[0070] 3. Preparation of Aqueou...

Embodiment 2

[0073] In Example 1, 45 g of alkylnaphthalene sulfonate [trade name: Dispersol BB4, from Croda] of the dispersion of calcium copper sulfate was changed to 45 g of polycarboxylate [trade name: ATLOX METASPERSE 500L, from Croda]; Other than that, it was manufactured by the same method as Example 1. The average particle size of calcium copper sulfate is controlled at 1.2-1.3um.

Embodiment 3

[0075] In Example 1, 45 g of alkylnaphthalene sulfonate [trade name: Dispersol BB4, fromCroda] of the dispersion of calcium copper sulfate was changed to 45 g of phosphate amine salt [trade name: SOPROPHOR FLK, from Solvay]; , using the same method as Example 1 to manufacture. The average particle size of calcium copper sulfate is controlled at 1.2-1.3um.

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Abstract

The invention provides a stable aqueous suspension concentrate containing a high content of copper calcium sulphate. The aqueous suspension concentrate contains: a) copper calcium sulphate; b) one or more anionic surfactants, wherein the pH value of the anionic surfactant is not less than 6; c) a thickener; d) optionally one or more other conventional auxiliaries and additives; e) and water; the conventional auxiliary agent and the additive do not contain a non-ionic surface active agent. The technical scheme of the invention solves the problems of viscosity and fluidity of the water suspension system containing copper calcium sulfate. The aqueous suspension concentrate provided by the invention does not have the phenomena of viscosity and creaming during sanding and storage, and has excellent storage stability.

Description

technical field [0001] The invention relates to a stable water suspension concentrate containing copper calcium sulfate; in particular, it relates to a stable water suspension concentrate containing a high content of copper calcium sulfate. Background technique [0002] Calcium copper sulfate (CuSO 4 ·3Cu(OH) 2 ·3CaSO 4 ·7H 2 O) As an inorganic compound containing copper ions, it is an active ingredient that can be applied on leaves alone to control phytopathogens. [0003] At present, the commercial products of calcium copper sulfate are 77% calcium copper sulfate WP, 77% calcium copper sulfate water dispersible granules, 40% calcium copper sulfate + 20% carbendazim WP. The products containing copper calcium sulfate that have been commercialized at present are all solid products. To date, there has been no successful commercialization of calcium copper sulfate-containing aqueous suspension concentrates. [0004] Aqueous suspension concentrates are liquid formulations ...

Claims

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Application Information

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IPC IPC(8): A01N25/04A01N59/20A01P3/00A01P1/00
CPCA01N25/04A01N59/20
Inventor 罗昌炎詹姆斯.T.布里斯托
Owner JIANGSU ROTAM CHEM
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