Claims
- 1. A pesticidal formulation in the form of water-dispersible granule comprising:
- a solid material consisting essentially of (i) a filler/binder which is delaminated kaolin clay, (ii) a synthetic calcium silicate carrier, and (iii) a dispersing agent which is a mixture of a lignosulfonic acid of a condensed sulfonated sodium salt with polyvinylprrolidone; and
- a pesticidal effective amount of a salt of a water soluble or hygroscopic pesticide adsorbed onto said synthetic calcium silicate carrier, and wherein
- the granules have a particle size distribution of less than about 1.0 wt. % +8 mesh, less than about 3.0 wt. % -30 mesh and less than about 0.2 wt. % -100 mesh such that the granules have a median particle diameter size of less than about 40 microns after five minutes of non-sonic dissolution in water.
- 2. The formulation of claim 1 wherein said pesticide is selected from the group consisting of plant growth regulators, insecticides, nematocides, herbicides, fungicides, miticides, pesticides, acaricides, algicides, bactericides and mollusicides.
- 3. The formulation of claim 2 wherein said pesticide is a plant growth regulator.
- 4. The formulation of claim 3 wherein said plant growth regulator is an N,N-dimethyl-piperidinium salt.
- 5. The formulation of claim 4 wherein said plant growth regulator is selected from the group consisting of 1,1-dimethyl-3,4-dehydropiperidinium bromide, 4-chloro-1,1-dimethylpiperidinium bromide, 1,1-dimethyl-hexahydropyridazinium bromide, and 1,1-dimethylpiperidinium chloride.
- 6. The formulation of claim 5 wherein said plant growth regulator is 1,1-dimethylpiperidinium chloride.
- 7. The formulation of claim 1, wherein said pesticide is selected from the group consisting of sodium bentazon, sodium, acifluorfen, the sodium salt of sethoxydim, the dimethyl amine salts of 2,4-D, difenzoquat methyl sulfate and mixtures thereof.
- 8. The formulation of claim 7 wherein said pesticide is sodium bentazon.
- 9. The formulation of claim 7 wherein said pesticide is sodium acifluorfen.
- 10. The formulation of claim 1 wherein said pesticide is present in an amount of about 5 to about 50 percent by weight.
- 11. The formulation of claim 1, wherein the synthetic calcium silicate carrier and pesticide are present in a weight ratio of about 0.1 to about 2.0.
- 12. The formulation of claim 1 wherein the formulation includes wetting agents.
- 13. The formulation of claim 12 wherein the wetting agents are surfactants.
- 14. The formulation of claim 13 wherein the wetting agents are selected from the group consisting of mixtures of alkyl carboxylates and sulfonated alkyl naphthalene and their sodium salts.
- 15. The formulation of claim 13 wherein said wetting agent is present in an amount of about 0.5 to about 10.0 percent by weight.
- 16. The formulation of claim 1 wherein the filler/binder is present in an amount up to about 60 percent by weight.
- 17. The formulation of claim 1, wherein said dispersing agent is present in an amount up to about 15.0% by weight.
- 18. The formulation of claim 17 wherein said dispersing agent is present in amount of about 0.5 to about 15.0%, by weight.
- 19. The formulation of claim 1, wherein said dispersing agent is polyvinylpyrrolidone which is present in an amount up to 5.0%, by weight.
Parent Case Info
This is a continuation of application Ser. No. 07/968,723, filed Oct. 30, 1992, now abandoned.
US Referenced Citations (10)
Foreign Referenced Citations (5)
Number |
Date |
Country |
92107615.0 |
Jan 1994 |
CNX |
0270129 |
Jun 1988 |
EPX |
3007202 |
Jan 1991 |
JPX |
2238960 |
Jun 1991 |
GBX |
8900079 |
Jan 1989 |
WOX |
Non-Patent Literature Citations (2)
Entry |
Kirk-Othmer Dispersants in Encyclopedia of Chemical Technology p. 840, 1979. |
Grant & Hackh'Chemical Dictionary, Fifth Edition, McGraw-Hill Book Company. |
Continuations (1)
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Number |
Date |
Country |
Parent |
968723 |
Oct 1992 |
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