Plant protection composition absorbates and products for plant protection
View Patent ↗Absorbates having a high loading of particular substances for use in plant protection compositions, the use of a special process for the preparation of the absorbates and products for plant protection comprising the absorbates.
1. An absorbate, comprising:
at least one carrier material selected from the group consisting of a precipitated silica, a pyrogenic silica, a silica gel, a natural clay, a modified natural clay and a diatomaceous earth; and
at least one particular substance for use in plant protection compositions or a mixture of substances comprising at least one particular substance for use in plant protection compositions;
wherein the total amount of the particular substances for use in plant protection compositions, X stand. , is 70% to 99%.
2. The absorbate according to claim 1 , wherein the carrier material has a proportion of micropore volume, based on the total pore volume, of less than or equal to 10% by volume.
3. The absorbate according to claim 1 , wherein the carrier material exhibits a di-butyl-phthalate absorption of greater than or equal to 150 g/100 g.
4. The absorbate according to claim 1 , wherein the carrier material is a precipitated silica, a pyrogenic silica or a silica gel.
5. The absorbate according to claim 1 , wherein the carrier material has a tapped density of less than 200 g/l.
6. The absorbate according to claim 1 , wherein the carrier material has a tapped density of less than 150 g/l.
7. The absorbate according to claim 1 , wherein the carrier material has a tapped density of less than 100 g/l.
8. The absorbate according to claim 1 , wherein the proportion of the particular substance for use in plant protection compositions or, in mixtures of at least two of these substances, the total amount of these substances, X stand. , is 75 to 95%.
9. The absorbate according to claim 1 , comprising at least one particular substance for use in plant protection composition having a melting point of less than or equal to 80° C.
10. The absorbate according to claim 1 , comprising at least one absorbed component that is an active substance for plant protection composition.
11. The absorbate according to claim 1 , comprising at least one of the absorbed components that is an auxiliary for plant protection compositions.
12. The absorbate according to claim 1 , which is a water dispersable granule or wettable powder formulation.
13. A process for making an absorbate of claim 1 , comprising:
providing a liquid in a feed vessel, wherein the liquid comprises at least one of (1) a liquid or molten particular substance for use in plant protection compositions and (2) a liquid or molten mixture of substances comprising at least one particular substance for use in plant protection compositions;
mixing, partly dissolving, or both mixing and partly dissolving, a gas in the liquid to form a mixture;
feeding the mixture to an expansion element;
conveying the mixture through the expansion element to expand the mixture; and
adding at least one solvent pulverulent carrier material to the expanded mixture.
14. The process as claimed in claim 13 , wherein the mixing, partly dissolving or both mixing and partly dissolving is carried out under elevated pressure.
15. The process as claimed in claim 13 , wherein the mixing, the partly dissolving or both the mixing and partly dissolving is carried out under super critical conditions.
16. The process as claimed in claim 13 , wherein the mixing, the partly dissolving, or both the mixing and the partly dissolving is carrier out with CO 2 at a pressure of greater than 73.83 bar and a temperature of greater than 31.04° C.
17. The process as claimed in claim 13 , wherein the mixing, the partly dissolving or both the mixing and the partly dissolving is carried out in at least one of a mixer and a pressurized vessel.
18. The process according to claim 13 , wherein the carrier material has a proportion of micropore volume, based on the total pore volume of less than or equal to 10% by volume.
19. The process according to claim 13 , wherein the carrier material has a di-butyl-phthalate absorption of ≧150 g/100 g.
20. The process according to claim 13 , wherein the carrier material is a precipitated silica, a pyrogenic silica or a silica gel.
21. The process according to claim 13 , wherein the carrier material has a tapped density of less than 200 g/l.
22. The process according to claim 13 , wherein the carrier material has a tapped density of less than 150 g/l.
23. The process according to claim 13 , wherein the carrier material has a tapped density of less than 100 g/l.
24. An absorbate made by the process of claim 13 .
25. A plant protection product comprising the absorbate according to claim 1 .
26. The product according to claim 25 , which is a wettable powder or a water dispersable granule formulation.
27. A process, comprising:
applying the absorbate according to claim 1 onto a plant.
28. The process as claimed in claim 13 , wherein the mixture is at least one of a liquid/gas solution and a liquid/gas melt.
29. An absorbate, comprising:
at least one carrier material selected from the group consisting of a precipitated silica, a pyrogenic silica, a silica gel, a natural clay, a modified natural clay and a diatomaceous earth; and
at least one plant protection substance absorbed by the carrier material;
wherein the total amount of the plant protection substance absorbed by the absorbate is X stand. of 70-99% based on the total weight of the absorbed plant protection substance and the carrier material;
wherein:
X
stand
=
100
ρ
Fl
*
(
100
X
vor
-
1
)
+
1
formula
(
I
)
with
X stand. =amount by weight standardized with regard to a liquid density of 1.00 g/ml, in %,
X before =amount by weight before standardization, in %,
ρ 1 =density of the absorbed particular substance for use in plant protection compositions or of the mixture of particular substances for use in plant protection compositions, in g/ml;
Wherein the amount by weight before the standardization is calculated according to formula (II):
X
before
=
W
1
abs
.
W
abs
.
total
*
100
%
formula
(
II
)
with
W 1 abs. =weight of the absorbed plant protection substance, in g,
W abs. total =total weight of the absorbate, in g.
30. The absorbate according to claim 29 , wherein X stand. is 75-95%.