Composition comprising eutectic mixture of boscalid and strobilurin fungicide
A eutectic mixture and strobilurin technology, which can be used in biocides, animal repellents, plant growth regulators, etc., and can solve problems such as cumbersome and stability problems
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Embodiment 1
[0272] Embodiment 1: The eutectic mixture of boscalid and azoxystrobin according to the present invention is prepared as follows:
[0273] Boscalid and azoxystrobin were ground in different ratios as shown in Table 1 in an agate mortar and the mixture was ground thoroughly. The resulting mixture was analyzed by DSC.
[0274] Table 1: Boscalid-Azoxystrobin mixtures in different ratios .
[0275]
[0276] Methods for Detecting Eutectic Mixtures :
[0277] Eutectic mixtures were detected by recording DSC.
[0278] Record the endothermic peak of boscalid between 144°C and 148°C (starting temperature is 144.71°C, ΔH=83.65J / g)[ figure 1 ]. Record the endothermic peak of azoxystrobin between 112°C and 118°C (onset temperature is 114.34.2°C, ΔH=86.19J / g)[ figure 2 ]. DSC was performed on mixtures of boscalid:azoxystrobin at different ratios. The results showed that when the ratio of boscalid: azoxystrobin was 60:40, a eutectic mixture was formed, showing a single endot...
Embodiment 2
[0279] Example 2: A composition comprising a eutectic mixture of boscalid (anhydrous modified I) and azoxystrobin according to the present invention was prepared as follows:
[0280] Table 2: Composition of boscalid-azoxystrobin water-dispersible granules :
[0281]
[0282] Weigh boscalid and azoxystrobin, grind in an agate mortar, and grind the mixture thoroughly. The mixture is then ground in an air jet mill with the listed ingredients to obtain the desired particle size. Water is added to the powdered mixture to prepare dough. Granules were prepared by subjecting the dough to a granulator. Dry the granules in a dryer, then sieve. Particles were analyzed by DSC. A DSC endothermic peak was observed at 104.5°C. ( Figure 5 ).
Embodiment 3
[0283] Example 3: A composition comprising a eutectic mixture of boscalid (anhydrous modified II) and azoxystrobin according to the present invention was prepared as follows:
[0284] Table 4: Composition of boscalid-azoxystrobin water-dispersible granules :
[0285]
[0286] Boscalid and azoxystrobin were weighed and then ground in an air jet mill with the listed ingredients to obtain the desired particle size and the composition was prepared as in Example 2. Particles were analyzed by DSC. A DSC endothermic peak was observed at 105.89°C. ( Figure 6 ).
[0287] Details of various inventive compositions according to the invention comprising eutectic mixtures of boscalid and azoxystrobin are given in Table 4. The composition was prepared according to the procedure of Example 2.
[0288] Different formulations were prepared using different ratios of boscalid and azoxystrobin. Details of the weight ratios of the various components are listed in Table 4 below:
[0289...
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