Patent ID: 6376566
Filing Date: 2002-04-23
Classification: A01N

Abstract:
A foamable aqueous agricultural foam marker concentrate composition for dilution with about 100 parts by weight or more of water based on one part by weight of the concentrate, the foam marker concentrate comprising:(a) about 10 to about 40 wt % of at least one anionic surfactant selected from the group consisting of salts of an &agr;-olefin sulfonate having from about 12 to about 16 carbon atoms and salts of n alkyl ether sulfate having from 8 to about 16 carbon atoms; (b) from about 4 to about 8 wt % of at least one linear alkanol having from about 12 to about 16 carbon atoms; (c) from about 3 to about 20 wt % of a foam stabilizing polymer selected from the group consisting of a polyacrylic acid and salts thereof having a molecular weight of from about 10,000 to about 500,000, an ethylene oxide/propylene oxide block copolymer having a molecular weight up to about 30,000, a polyethylene glycol having a molecular weight of 400 or greater, and a biopolymer having a molecular weight of about 100,000 or greater; and (d) from about 5 to about 40% wt % of one or more solvents selected from the group consisting of 2-butoxyethanol, diethylene glycol, ethanol, propanol, isopropanol, and butanol; wherein the weight percents are based on the total weight of the concentrate composition and the weight percent of the anionic surfactant is on a dry weight basis of the surfactant.