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N-acyl sarcosinates as glyphosate adjuvants

A kind of technology of acyl sarcosinate and lauroyl sarcosine, which is applied in the field of adjuvant of glyphosate

Inactive Publication Date: 2004-08-11
HAMPSHIRE CHEM CORP LEXINGTON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the translation of such formulations into commercial products has been limited both by the cost of incorporating such surfactants into such formulations and by the hydrolytic instability of such adjuvants

Method used

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  • N-acyl sarcosinates as glyphosate adjuvants

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Cocoyl Sarcosine 280g is carefully mixed with 59.11g Isopropylamine. The resulting clear viscous liquid was dissolved in water to produce a clear solution with a pH of approximately 6.5.

[0024] 169.07 grams of glyphosate acid was reacted with 90 grams of isopropylamine in 122 grams of distilled water in a closed container to produce a salt solution of isopropylammonium glyphosate. (A closed container is essential since this reaction is exothermic and isopropylamine boils at about 25°C). The pressure in the vessel initially rises and then gradually decreases as the reaction progresses. The product (a clear, viscous liquid) was miscible with water in all proportions and had a pH of approximately 6.5.

[0025] 20.49 g of isopropyl ammonium glyphosate (60% isopropyl ammonium glyphosate) was mixed with 0.6 g of isopropyl ammonium cocoyl sarcosinate, and 29.7 g of distilled water was added to produce an active concentration equivalent to commercially available The glypho...

Embodiment 2

[0028] Mix 349 grams of oleoyl sarcosine with 59.11 grams of isopropylamine. The resulting amber viscous liquid was soluble in water and yielded a clear, transparent solution with a pH of approximately 6.5.

Embodiment 3

[0030] 270 grams of lauroyl sarcosine was heated to just above its melting point and subsequently reacted with 59.11 grams of isopropylamine. The resulting clear viscous liquid slowly solidifies when cooled to room temperature, but readily remelts. The product, when dissolved in water, forms a clear, transparent solution with a pH of approximately 6.5.

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Abstract

An adjuvant for glyphosate having increased activity, lower irritancy and lower toxicity than conventional adjuvants, and method of controlling weeds using the same. The adjuvant is C8 to C22 sarcosinate or sarcosinate salt, such as sodium cocoyl sarcosinate, sodium lauroyl sarcosinate, or combinations thereof, which is combined with glyphosate in low concentrations and provides effective activity.

Description

technical field [0001] The present invention relates to the field of herbicides. The present invention specifically relates to adjuvants for glyphosate. Background technique [0002] Glyphosate is N-phosphonomethylglycine (HOOCCH 2 NHCH 2 PO(OH) 2 ) is a well-known transmissive broad-spectrum herbicide for post-emergence use. A typical commercial formulation contains about 41% isopropylamine salt of glyphosate and is believed to also contain about 16-20% by weight tallow ethoxylated amine surfactant. Glyphosate is a relatively poorly soluble acid and is therefore usually formulated and applied as a salt such as isopropylamine, sodium or ammonium. [0003] Surfactants are incorporated into the formulation to enhance the activity of glyphosate. But the concept of the term "surfactant" is ambiguous because the form provided by the manufacturer does not have to be a single compound, it can be a mixture. For example, in the case of ethoxylated surfactants, the degree of et...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N37/30A01N57/20
CPCA01N57/20A01N37/46A01N25/32A01N25/30A01N2300/00A01N57/10A01N33/04
Inventor J·J·克鲁顿
Owner HAMPSHIRE CHEM CORP LEXINGTON
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