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Stable high-content copper calcium sulfate water suspension preparation

A copper calcium sulfate, water suspension technology, applied in the direction of fungicides, biocides, biocides, etc., can solve the problems of supernatant liquid separation, hard agglomeration, etc.

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

[0010] The unexpected discovery of the present invention, through the combination of specific ratio of organic thickener and inorganic thickener, can solve the supernatant separation that occurs in the storage process that contains high-content copper calcium sulfate water suspension preparation, solid sedimentation sticks to the bottom and forms hard clumping problem

Method used

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  • Stable high-content copper calcium sulfate water suspension preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 1. Dispersion of calcium copper sulfate

[0042] Dispersed in 491.5 g of water were magnesium aluminum silicate [trade name: VEEGUM R, from R.T. VANDERBILT] 7.5 g, lignosulfonate [trade name: POLYFON O, from WESTVACO] 30 g, polyarylphenyl ether ammonium phosphate [trade name: POLYFON O, from WESTVACO] Name: Soprophor FLK, from SOLVAY] 15g, propylene glycol 50g, silicone defoamer [trade name: SAG 1572, Momentive] 2g, in which 660g of copper calcium sulfate (active ingredient concentration 98%) is dispersed, using 0.8-1.2 g The mmφ glass beads were wet-milled with a sand mill [Dynomill®] to obtain 1256 g of a copper-calcium sulfate-containing dispersion.

[0043] 2. Dispersion medium

[0044] 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...

Embodiment 2

[0048] In Example 1, 175.3 g of water in the dispersion medium was changed to 175.1 g, and 1.4 g of xanthan gum [trade name: AG-RHO POL23 / W (CN source, from Solvay]) was changed to 1.6 g; Manufactured by the same method as Example 1. The average particle size of calcium copper sulfate is controlled to 1.2-1.3um.

Embodiment 3

[0050] In Example 1, 175.3 g of water in the dispersion medium was changed to 174.8 g, and 1.4 g of xanthan gum [trade name: AG-RHO POL23 / W (CN source, from Solvay]) was changed to 1.9 g; Manufactured by the same method as Example 1. The average particle size of calcium copper sulfate is controlled to 1.2-1.3um.

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Abstract

The invention provides a high-content copper calcium sulfate water suspension preparation. The invention relates to a water suspension preparation with high content of copper calcium sulfate. The water suspension preparation contains: i) 500g / L-800g / L of copper calcium sulfate; ii) 1 g / L to 3 g / L of an organic thickening agent; iii) 2 g / L to 10 g / L of an inorganic thickening agent; iv) 0 to 250 g / L of optional one or more other conventional auxiliary agents and additives; and V) supplementing water to 1L. The high-content copper calcium sulfate water suspension preparation provided by the invention has excellent long-term storage stability, and the phenomena of supernate separation, solid sedimentation and bottom sticking and hard caking do not occur after storage.

Description

technical field [0001] The invention relates to a high-content calcium copper sulfate aqueous suspension preparation; in particular, it relates to a stable high-content calcium copper sulfate aqueous suspension preparation. 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 wettable powder, 77% calcium copper sulfate water dispersible granules, 40% calcium copper sulfate + 20% carbendazim wettable powder. The products containing calcium copper sulfate that have been commercialized at present are all solid products. [0004] Aqueous suspension formulations are often referred to as liquid formulations containing solid agrochemical active ingredients. Since water is the dispersion medium for these...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/20A01N25/04A01P3/00
CPCA01N59/20A01N25/04
Inventor 罗昌炎詹姆斯.T.布里斯托
Owner JIANGSU ROTAM CHEM
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