Homogeneous, essentially nonaqueous adjuvant compositions with buffering capability
AssigneeHelena Chemical Company
InventorJohnnie R. Roberts
Life of this patent
Estimating the term…
Abstract
A homogenous, essentially nonaqueous adjuvant composition comprising a spray oil and a surfactant blend of a sorbitan fatty acid ester, a polyethoxylated sorbitan fatty acid ester and an alkylaryl polyethoxy phosphate ester buffering agent is disclosed. When mixed with an herbicide or a pesticide, the composition provides one-step mixing of the adjuvants to obtain a more uniform spread of the spray solution, improved penetration and slower evaporation. The composition maintains the pH of the spray solution within a desired range even in the presence of alkaline waters typically used in spray solutions.
Claims9
A homogeneous, essentially nonaqueous adjuvant composition comprising a spray oil having a minimum of 92% unsulfonated residue (UR) value and a surfactant blend consisting essentially of a sorbitan fatty acid ester and a polyethoxylated sorbitan fatty acid ester in a weight ratio of about 1:3 and an alkylaryl polyethoxy phosphate ester as a buffering agent in an amount sufficient to reduce the pH to 4 to 6.
Dependencies are inferred from the claim text.