| abstract |
This invention provides for, inter alia , a method for increasing the rainfastness of annagrochemical composition without increasing its spreading properties, which comprises addingnto said agrochemical composition an effective amount of one or more silicone surfactants of thenformulan R 3 Si-O-[RR'SiO-] n -SiR 3 n whereinn n is 1 to 3, R is an alkyl radical with 1 to 6 carbon atoms, R' is a radical of the structuren -(CH 2 ) m -O-(C 2 H 4 O) y (C 2 H 3 R"O) z -Z, n whereinn m is 2 to 6, R" is independantly methyl, ethyl or phenyl, Z is hydrogen, an alkyl radical with 1 to 4 carbon atoms, or an acylnradical with 2 to 6 carbon atoms, y is 6 to 30, z is 0 to 10, nwith the proviso that the ratio y/z is 1 or greater, and that the total number of alkylene oxidengroups n * (y+z) in the siloxane polymer (I) is at least 12. |