Patent ID: 6734141
Filing Date: 2004-05-11
Classification: A01N

Abstract:
A herbicidal composition which comprises a herbicide, which is effective against herbaceous plants, optionally one or more cosurfactants and one or more silicone surfactants of the formulaR3Siâ€”Oâ€”[RRâ€²SiOâ€”]nâ€”Oâ€”SiR3 whereinn is 1 to 3, R is an alkyl radical with 1 to 6 carbon atoms, Râ€² is a radical of the structure â€”(CH2)mâ€”Oâ€”(C2H4O)y(C2H3Râ€³O)zâ€”Z, â€ƒwherein m is 2 to 6, Râ€³ is independently methyl, ethyl or phenyl, Z is hydrogen, an alkyl radical with 1 to 4 carbon atoms, or an acyl radical with 2 to 6 carbon atoms, y is 6 to 30, z is 1 to 10, with the proviso that the ratio of y to z is 1 or greater, and that the total number of alkylene oxide groups n*(y+z) in the siloxane polymer (I) is at least 12 whereby said silicone surfactant in a 0.10% aqueous solution exhibits a surface tension of less than about 30 mN/m and a spreading area on a polypropylene surface of about 10% or less compared to that of a superspreading siloxane sufactant of the formulaMe3SiO[MeR1SiO]1â€”OSiMe3 where R1 is â€”(CH2)3â€”Oâ€”(CH2CH2â€”O)8â€”Me.