Compositions of polyoxyalkylene alkylamine surfactants having reduced eye irritation

• US 6,121,200 A
• Filed: 05/26/1999
• Issued: 09/19/2000
• Est. Priority Date: 08/09/1990
• Status: Expired due to Term

• Current Assignee: Monsanto Technology LLC (Bayer AG)
• Original Assignee: Monsanto Company (Bayer AG)
• Inventors: Berger, Paul D., Jimenez, Antonio M.
• Primary Examiner(s): Clardy, S. Mark
• Application Number:
  US09/320,476
• Time in Patent Office: 482 Days
• Field of Search: 516/119, 516/203, 504/206, 504/362
• US Class Current: 504/206
• CPC Class Codes: A01N 2300/00 Combinations or mixtures of active ingredients covered by classes A01N27/00 - A01N65/48 with other active or formulation relevant ingredients, e.g. specific carrier materials or surfactants, covered by classes A01N25/00 - A01N65/48
• CPC Class Codes: A01N 25/30 characterised by the surfactants
• CPC Class Codes: A01N 25/32 Ingredients for reducing the noxious effect of the active substances to organisms other than pests, e.g. toxicity reducing compositions, self-destructing compositions
• CPC Class Codes: A01N 57/20 containing acyclic or cycloaliphatic radicals
• CPC Class Codes: C09K 23/017 Mixtures of compounds
• CPC Class Codes: C09K 23/16 Amines or polyamines
• CPC Class Codes: Y10S 516/05 Organic amine, amide, or n-base containing
• CPC Class Codes: Y10S 516/07 Organic amine, amide, or n-base containing
• CPC Class Codes: Y10S 516/916 The compound contains repeating -OCnH2n-, i.e. repeating unsubstituted oxyalkylene

Abstract

There are provided compositions of certain polyoxyalkylene alkylamine surfactants having eye irritation reduced by the addition of an effective amount of a sulfated polyoxyalkylene alkylphenol, alcohol sulfate, polyoxyalkylene alcohol sulfate, mono- or dialcohol phosphate mono- or di-(polyoxyalkylene alcohol) phosphate, polyoxyalkylene alkylphenol carboxylate or polyoxyalkylene alcohol carboxylate surfactant. Also provided are pesticidal, particularly herbicidal, compositions comprising polyoxyalkylene alkylamine surfactants having eye irritation reduced by addition of these eye irritation reducing compounds.

Claims

1. A water soluble surfactant composition comprising

(a) an amine surfactant component consisting of (i) one or more compounds having the chemical structure ##STR8## where x is a number from about 7 to about 19, n₁ and n₂ are numbers independently selected from 1 to about 30, the average sum of n₁ and n₂ is 2 or greater, and R₁ and R₂ are C₂ -C₄ alkylene radicals;

and (ii) one or more glycols selected from ethylene glycol, propylene glycol, polyethylene glycol and polypropylene glycol in an amount of zero to about 30% by weight of the amine surfactant component;

(b) an effective eye irritation reducing amount of a phosphate surfactant component consisting of a phosphate monoester or mixture of phosphate monoesters having the chemical structure ##STR9## where R⁷ is C₈ -C₂₀ alkyl or C₈ -C₂₀ alkylphenyl, R is C₂ -C₄ alkylene, and m is a number from zero to about 60;

alone or in combination with a phosphate diester or mixture of phosphate diesters having the chemical structure ##STR10## where R⁷, R and m are as defined immediately above; and

optionally (c) water;

wherein the amount of the amine surfactant component is about 60% to about 85% by weight of the surfactant composition excluding water.

2. The surfactant composition of claim 1 wherein, in the amine surfactant component, R₁ and R₂ are each ethylene and the average sum of n₁ and n₂ is about 4 to about 20.

3. The surfactant composition of claim 1 wherein the amine surfactant component comprises polyoxyethylene tallowamine having about 8 to about 13 moles of ethylene oxide.

4. The surfactant composition of claim 1 wherein, in the phosphate surfactant component, R₁ is nonylphenyl and m is about 4.

5. The surfactant composition of claim 1 wherein the phosphate monoester or monoesters are present in an amount that exceeds the amount of the phosphate diester or diesters.

6. The surfactant composition of claim 1 wherein (a) the amine surfactant component comprises polyoxyethylene tallowamine having about 8 to about 13 moles of ethylene oxide, (b) in the phosphate surfactant component, R₁ is nonylphenyl and m is about 4, and (c) the phosphate monoester is present in an amount that exceeds the amount of the phosphate diester.

7. A method for preparing a concentrate composition of a water soluble pesticide, comprising mixing together (i) the water-soluble pesticide in an amount of about 5% to about 85% by weight of the concentrate composition, (ii) a surfactant composition of claim 1 in an amount of about 5% to about 25% by weight of the concentrate composition, and optionally (iii) water.

8. A method for preparing a sprayable composition of a water soluble pesticide, comprising

(a) mixing together (i) the water-soluble pesticide in an amount of about 5% to about 85% by weight, (ii) a surfactant composition of claim 1 in an amount of about 5% to about 25% by weight, and optionally (iii) water, to form a concentrate composition;

and

(b) diluting the concentrate composition with water to form the sprayable composition.

9. The method of claim 8 wherein the pesticide is a herbicide selected from water soluble salts of acifluorfen, benzac, bialaphos, chloramben, 2,4-D, dalapon, dicamba, dichlorprop, endothal, glufosinate, glyphosate, imazaquin, imazethapyr, MCPA, MCPB, mecoprop, picloram and mixtures thereof.

10. The method of claim 9 wherein the herbicide is a salt of glyphosate selected from the trimethylsulfonium, ammonium, isopropylamine, sodium and potassium salts.

11. A method for preparing a sprayable composition of a water soluble pesticide, comprising mixing together (i) the water soluble pesticide in a pesticidally effective amount, (ii) a surfactant composition of claim 1 an amount to provide a pesticide to surfactant ratio of about 1:

1 to about 5;

1 by weight, and (iii) water in an amount suitable for spraying.

12. The method of claim 11 wherein the pesticide is a herbicide selected from water soluble salts of acifluorfen, benzac, bialaphos, chloramben, 2,4-D, dalapon, dicamba, dichlorprop, endothal, glufosinate, glyphosate, imazaquin, imazethapyr, MCPA, MCPB, mecoprop, picloram and mixtures thereof.

13. The method of claim 12 wherein the herbicide is a salt of glyphosate selected from the trimethylsulfonium, ammonium, isopropylamine, sodium and potassium salts.