Crop oil concentrate adjuvants containing amine surfactants
View Patent ↗In agricultural practice it is known to use emulsifiable oils (commonly referred to a Crop Oil Concentrates, COC) as bioefficacy enhancers for pesticides, especially herbicides. Cationic surfactants are widely known to be particularly effective bio-active enhancers for herbicides, especially for glyphosate-type herbicides. The present invention includes two novel aspects: 1) While the vast majority of COCs are petroleum-based paraffinic oils or esterified seed oils, this invention embodies a new oil phase, a hydrocarbon oil such exemplified by EXXON-MOBIL'S D-130, which when combined with the surfactants described herein, exhibits surprising enhancement of herbicidal activity in field tests; and 2) COC's are designed to form stable emulsions in water. The combination of cationic surfactants and phosphate esters in this invention not only form very stable emulsions in water, but, surprisingly, also form extremely stable emulsions in concentrated liquid fertilizers, including 32-0-0 fertilizer.
1. A crop oil concentrate (COC) comprising:
from 8 w/w % to 10 w/w % of one or more amine surfactants;
from 28 w/w % to 30 w/w % of a phosphate ester surfactant;
60 w/w % of a dearomatized hydrocarbon oil; and
water, wherein the one or more amine surfactants is an alkyl amine alkoxylate.
2. The crop oil concentrate of claim 1 , wherein the one or more amine surfactants comprise a tallow amine ethoxylate.
3. The crop oil concentrate of claim 2 , wherein the one or more amine surfactants further comprise a cocoamine ethoxylate.
4. A crop oil concentrate (COC) comprising:
from 8 w/w % to 10 w/w % of one or more amine surfactants;
from 28 w/w % to 30 w/w % of a phosphate ester surfactant; and
60 w/w % of a dearomatized hydrocarbon oil, wherein the one or more amine surfactants comprises:
4.5 w/w % of a cocoamine ethoxylate; and
5.5 w/w % of a tallow amine ethoxylate.
5. The crop oil concentration of claim 4 , comprising:
30 w/w % of the phosphate ester surfactant.