Claims
- 1. A containerization system comprising a water dispersible gel contained in a water-soluble or water dispersible bag; the water dispersible gel comprising:(a) 1-60% by weight of an ionic, water-soluble agrocherical; (b) 1-4% by weight of a crosslinked polyacrylic acid; (c) 30-80% by weight of water; and, (d) 2-20% by weight of a base; the water dispersible gel having a storage modulus (G′) in the range 20-500 Pa and a Tan δ of less than 0.5.
- 2. A containerization system as claimed in claim 1, wherein the pH of the gel is in the rang 6 to 10.
- 3. A containerization system as claimed in claim 1 wherein the crosslinked polyacrylic acid has a molecular weight in the range 5×105 to 5×106.
- 4. A containerization system as claimed in claim 1 or 2 wherein the base is an ammonium or alkali metal hydroxide, carbonate or bicarbonate; or an amine of formula R1R2R3N wherein R1, R2 and R3 are, independently, hydrogen or C1-6 alkyl, optionally substituted by C1-6 alkoxy, hydroxy, halogen, C1-6 haloalkoxy, C1-6 hydroxyalkoxy or C1-4 alkoxy(C1-6)alkoxy.
- 5. A containerization system as claimed in claim 1 wherein the ionic, water-soluble agrochemical is a paraquat salt, a diquat salt, or a salt or ester of glyphosate.
- 6. A containerization system as claimed in claim 5 wherein the ionic, water-soluble agrochemical is paraquat dichloride, diquat dibromide, glyphosate isopropylammonium or glyphosate trimesium.
- 7. A containerization system comprising a water dispersible gel contained in a water-soluble or water dispersible bag; the water dispersible gel being obtainable by mixing:(a) 1-60% by weight of an ionic, water-soluble agrochemical; (b) 1-4% by weight of a crosslinked polyacrylic acid; (c) 30-80% by weight of water; and, finally, (d) 2-20% by weight of a base; the water dispersible gel having a storage modulus (G′) in the range 20-500 Pa and a Tan δ of less than 0.5.
- 8. A containerization system as claimed in claim 7, wherein the pH of the gel is in the range 6 to 10.
- 9. A containerization system as claimed in claim 7 wherein the crosslinked polyacryl acid has a molecular weight in the range 5×105 to 5×106.
- 10. A containerization system as claimed in claim 7 or 8 wherein the base is an ammonium or alkali metal hydroxide, carbonate or bicarbonate; or an amine of formula R1R2R3N wherein R1, R2 and R3 are, independently, hydrogen or C1-6 alkyl, optionally substituted by C1-6 alkoxy, hydroxy, halogen, C1-6 haloalkoxy, C1-6 hydroxyalkoxy or C1-4 alkoxy(C1-6)alkoxy.
- 11. A containerization system as claimed in claim 7 wherein the ionic, water-soluble agrochemical is a paraquat salt, a diquat salt, or a salt or ester of glyphosate.
- 12. A containerization system as claimed in claim 11 wherein the ionic, water-soluble agrochemic is paraquat dichloride, diquat dibromide, glyphosate isopropylammonium or glyphosate trimesium.
- 13. A containerization system comprising a water dispersible gel cotained in a water-soluble or water-dispersible bag, the water dispersible gel comprising:(a) an ionic, water-soluble agrochemical; (b) the reaction product of a crosslinked polyacrylic acid and a base; and (c) 30-80% by weight of water; the water dispersible gel having a storage modulus (G′) in the range 20-500 Pa and a Tan δ of less than 0.5.
Priority Claims (1)
Number |
Date |
Country |
Kind |
9415290 |
Jul 1994 |
GB |
|
Parent Case Info
This application is a continuation of application Ser. No. 08/508,018, filed Jul. 27, 1995.
US Referenced Citations (6)
Foreign Referenced Citations (19)
Number |
Date |
Country |
6650174 |
Sep 1975 |
AU |
2411727 |
Sep 1974 |
DE |
251464 |
Jan 1988 |
EP |
430634 |
Jun 1991 |
EP |
518689 |
Dec 1992 |
EP |
948185 |
Jan 1964 |
GB |
970579 |
Sep 1964 |
GB |
1047601 |
Nov 1966 |
GB |
1395502 |
May 1975 |
GB |
1430207 |
Mar 1976 |
GB |
1506568 |
Apr 1978 |
GB |
62201803 |
Sep 1987 |
JP |
WO 872864 |
May 1987 |
WO |
WO 886888 |
Sep 1988 |
WO |
WO 894282 |
May 1989 |
WO |
WO 9119481 |
Dec 1991 |
WO |
WO 921377 |
Feb 1992 |
WO |
9325474 |
Jun 1993 |
WO |
9602239 |
Feb 1996 |
WO |
Non-Patent Literature Citations (5)
Entry |
Ullmann's Encyclopedia of Industrial Chemistry, vol. A21, pp. 143-156 (1992). |
Ketz Jr. et al., Rheologica Acta 27, 531 (1988). |
Nae et al., Rheologica Acta 31, 351 (1992). |
Finch et al. (ed). polyvinyl Alcohol, pp. 39-43 (1973). |
B.F. Goodrich brochure “CARBOPOL® Water Soluble Resins”. |
Continuations (1)
|
Number |
Date |
Country |
Parent |
08/508018 |
Jul 1995 |
US |
Child |
08/898627 |
|
US |