Claims
- 1. A continuous extruder process for preparing a water soluble, irregularly shaped, granular salt having an activity selected from the group consisting of herbicide, plant growth regulant, insecticide, fungicide, acaricide and bactericide, and having a residual moisture content no greater than 10%, which comprises:
- feeding a solid, precursor acid selected from the group consisting of N-1-naphthylphthalamic acid, N-(phosphonomethyl)-glycine, 3-(1-methylethyl)-1H-2,1,3-benzothiadiazin-4 (3H)-one 2,2-dioxide, 2-(1-methylpropyl)-4,6-dinitrophenol, and 1,2-dihydropyridazine-3,6-dione of said salt and the respective solid alkali metal or alkaline earth metal hydroxide base into one end of an extruder reaction zone without the addition of extraneous solvent;
- intimately admixing the compounds under shear conditions sufficiently high to result in stoichiometric conversion to said salt having a bulk density from about 38 to about 44 pounds per cubic foot, with at least 75% of the salt particles being in the size of 1-50 mesh;
- and removing the water soluble, irregularly shaped, granular solid salt from the reaction zone.
- 2. The process of claim 1 wherein inert inorganic material is admixed with the compounds in the reaction zone to absorb at least part of the heat of reaction.
- 3. The process of claim 1 wherein water vapor is withdrawn from the reaction zone during the reaction.
- 4. The process of claim 1 wherein said base further comprises ammonia or an organic amine.
- 5. The process of claim 1 wherein the acid of the active compound is N-1-naphthylphthalamic acid.
- 6. The process of claim 1 wherein the acid of the active compound is N-(phosphonomethyl)glycine.
- 7. The process of claim 1 wherein the acid of the active compound is 3-(1-methylethyl)-1H-2,1,3-benzothiadiazin-4(3H)-one 2,2-dioxide.
- 8. The process of claim 1 wherein the acid of the active compound is 2-(1-methylpropyl)-4,6-dinitrophenol.
- 9. The process of claim 1 wherein the acid of the active compound is 1,2-dihydropyridazine-3,6-dione.
Parent Case Info
This is a continuation of application Ser. No. 208,827, filed June 15, 1988, now abandoned which is a continuation of application Ser. No. 841,904 filed Mar. 20, 1986, now abandoned.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
3801632 |
Lademann et al. |
Apr 1974 |
|
Foreign Referenced Citations (3)
Number |
Date |
Country |
1642967 |
Jun 1971 |
DEX |
1488369 |
Jun 1967 |
FRX |
1354316 |
May 1974 |
GBX |
Continuations (2)
|
Number |
Date |
Country |
Parent |
208827 |
Jun 1988 |
|
Parent |
841904 |
Mar 1986 |
|