Liquid herbicidal preparations

Patent metadata

Field	Value
Publication number	US-9750251-B2
Application number	US-86761809-A
Country	US
Kind code	B2
Filing date	Feb 5, 2009
Priority date	Feb 14, 2008
Publication date	Sep 5, 2017
Grant date	Sep 5, 2017

Abstract

Herbicidal oil dispersions comprising
(a) desmedipham and/or phenmedipham, ethofumesate and lenacil, (b) one or more surfactants, c) one or more compounds which as far as possible are polar but at the same time are water-insoluble or have a solubility in water of up to 5 g/l, from the group of fully esterified organic phosphates and fully esterified phosphonates, as solvents, d) optionally further organic solvents, e) optionally further, customary formulating auxiliaries, f) optionally water

are stable formulations and are suitable for controlling weeds, particularly for selective control in beet crops.

First claim

The invention claimed is:

1. An oil dispersion comprising:
(a) a herbicidally effective amount of a plurality of compounds comprising:
desmedipham of the formula (a1):

phenmedipham of the formula (a2):

ethofumesate of the formula (a3):

and lenacil of the formula (a4):

(b) one or more surfactants;
(c) one or more compounds, selected from the group consisting of fully esterified organic phosphates and fully esterified phosphonates, as solvents;
(d) if desired, other organic solvents;
(e) if desired, other, customary formulating auxiliaries; and
(f) if desired, water
wherein the amounts of components (a) to (f) are:
(a) 15% to 30% by weight of active ingredients (a1) to (a4),
(b) 15% to 60% by weight of surfactants,
(c) 15% to 50% by weight of phosphoric triesters or phosphonic diesters,
(d) 0% to 20% by weight of further solvents,
(e) 0% to 10% by weight of further, customary formulating auxiliaries,
(f) 0% to 10% by weight of water,
wherein the weight ratio of active ingredients (a1):(a2):(a3):(a4) is in a range of from (1):(1):(1):(0.3) to (1):(5):(8):(4).

2. The oil dispersion as claimed in claim 1 wherein the one or more surfactants (b) is (b1) a carbocyclic aromatics based surfactant, (b2) a non-aromatic based surfactant that contains no carbocyclic aromatic moieties, or a mixture of (b1) and (b2).

3. The oil dispersion as claimed in claim 1 ;
wherein the one or more surfactants (b) is (b1) a carbocyclic aromatics based surfactant selected from the group consisting of:
(b 1.1) phenols, phenyl (CcC4)alkyl ethers or (poly)alkoxylated phenols;
(b 1.2) (poly)alkylphenols or (poly)alkylphenol alkoxylates;
(b 1.3) polyarylphenols or polyarylphenol alkoxylates;
(b 1.4) compounds which formally represent the reaction products of the molecules described under (b1.1) to (b1.3) with sulfuric acid or phosphoric acid, and their salts neutralized with suitable bases; and
(b1.5) acidic (poly)alkyl- and (poly)aryl-benzenesulfonates and such neutralized with suitable bases.

4. The oil dispersion as claimed in claim 1 ;
wherein the one or more surfactants (b) is (b1) a carbocyclic aromatics based surfactant selected from the group consisting of:
phenol reacted with 4 to 10 mol of ethylene oxide;
triisobutylphenol, tri(sec-butyl)phenol or tri(n-butyl)phenol reacted with 4 to 50 mol of ethylene oxide;
nonylphenol reacted with 4 to 50 mol of ethylene oxide;
tristyrylphenol reacted with 4 to 150 mol of ethylene oxide; and
acidic (linear) dodecylbenzenesulfonate.

5. The oil dispersion as claimed in claim 1 ;
wherein component (c) comprises one or more compounds selected from the group consisting of (c1) and (c2):
(c1) water-insoluble polar esters of phosphoric acid from the group consisting of:
(c1.1) phosphoric triesters with monohydric alkanols having 5 to 22 carbon atoms;
(c1.2) phosphoric triesters with dials or polyols;
(c1.3) phosphoric triesters with aryl, alkylaryl, poly(alkyl)aryl and poly(arylalkyl)aryl alcohols;
(c1.4) phosphoric triesters with alkoxylated alcohols obtained by reacting the alcohol components specified above under (c1.1) to (c1.3) with alkylene oxides;
(c1.5) phosphoric triesters with alkoxylated alcohols obtained by reacting monohydric alkanols having 1 to 4 carbon atoms and alkylene oxides; and
(c1.6) phosphoric triesters with a mixture of alcohols comprising two or more of the alcohol components specified above under groups (c1.1) to (c1.5);
where the 3 alcohol components of the phosphoric ester from groups (c1.1) to (c1.5) may in each case be identical or different and are selected such that the ester can be used as a water-insoluble polar solvent; and
(c2) water-insoluble and at the same time polar phosphonates based on alkyl-, aryl-, alkylaryl-, poly(alkyl)-aryl-, or poly(arylalkyl)-aryl-phosphonic acids doubly esterified with alcohols and/or with alkoxylated alcohols, selected from the following group:
(c2.1) diesters of phosphonic acids with monohydric alkanols having 1 to 22 carbon atoms;
(c2.2) diesters of phosphonic acids with diols or polyols;
(c2.3) diesters of phosphonic acids with aryl, alkylaryl, poly(alkyl)aryl or poly(arylalkyl)aryl alcohols;
(c2.4) diesters of phosphonic acids with alkoxylated alcohols which are obtained by reacting the alcohols specified above under (c2.1) to (c2.3) with alkylene oxides; and
(c2.5) diesters of phosphonic acids with a mixture of alcohols from two or more of the alcohol components specified above under groups (c2.1) to (c2.4);
where the 2 alcohol components of the phosphonic diester from groups (c2.1) to (c2.4) may in each case be identical or different and are selected such that the ester can be used as a largely water-insoluble polar solvent.

6. The oil dispersion as claimed in claim 1 ;
wherein component (c) is selected from the group consisting of:
(c1.7) phosphoric triesters with alkoxylated short-chain alcohols having 1 to 22 carbon atoms in the alkyl radical and 1 to 30 alkyleneoxy units in the polyalkyleneoxy moiety;
(c1.8) phosphoric triesters with alkyl alcohols having 5 to 22 carbon atoms; and
(c1.9) phosphoric triesters based on ortho-phosphoric acid esterified partially with optionally alkoxylated alcohols having 1 to 22 carbon atoms in the alkyl radical or with optionally alkoxylated phenol derivatives, in each case having 0 to 30 alkyleneoxy units in the polyalkyleneoxy moiety, the remaining OH valences of the ortho-phosphoric acid having been subsequently alkoxylated.

7. The oil dispersion as claimed in claim 1 ;
wherein component (c) is tributoxyethyl phosphate.

8. The oil dispersion as claimed in claim 1 ,
wherein the combination of compounds (a1), (a2), (a3), and (a4) has a synergistic effect that gives a greater herbicidal activity than if the compound (a4) is applied separately from the herbicides (a1), (a2), and (a3).

9. A method of controlling unwanted plant growth, comprising: applying an effective amount of the oil dispersion as claimed in claim 1 , optionally following dilution with water, to the plants, plant parts or cultivation area.

10. A process for preparing the oil dispersion as defined in claim 1 , comprising: mixing the components (a) to (f) with one another.

11. The method as claimed in claim 10 ; wherein weed plants are controlled selectively in beet crops.

Assignees

• Johann Gerhard
• Bickers Udo
• Denner Mandy
• Buckpesch Rainer
• Sixl Frank
• Bayer Ip Gmbh

Inventors

• Johann Gerhard
• Bickers Udo
• Denner Mandy
• Buckpesch Rainer
• Sixl Frank

Classifications

• A01N47/22

  O-Aryl or S-Aryl esters thereof · CPC title

• A01N25/30

  characterised by the surfactants · CPC title

• A01N43/54 Primary

  1,3-Diazines; Hydrogenated 1,3-diazines · CPC title

• A01N25/02

  containing liquids as carriers, diluents or solvents · CPC title

• A01N43/12

  condensed with a carbocyclic ring · CPC title